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L7805CV

2021-09-03 来源:小奈知识网
L78xxL78xxC

Positive voltage regulators

Features

■■■■■

Output current to 1.5 A

Output voltages of 5; 6; 8; 8.5; 9; 12; 15; 18; 24 V

Thermal overload protectionShort circuit protection

Output transition SOA protection

TO-220TO-220FPDescription

The L78xx series of three-terminal positive regulators is available in TO-220, TO-220FP, TO-3, D2PAK and DPAK packages and several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area

protection, making it essentially indestructible. If adequate heat sinking is provided, they can

deliver over 1 A output current. Although designed primarily as fixed voltage regulators, these

devices can be used with external components to obtain adjustable voltage and currents.

TO-3DPAKD²PAK

Table 1.Device summary

Part numbers

L7805L7805CL7806CL7808CL7885C

L7809CL7812CL7815CL7818CL7824C

March 2008Rev 191/56

www.st.com

56ContentsL78xx - L78xxC

Contents

123456789

Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

2/56

L78xx - L78xxCList of figures

List of figures

Figure 1.Figure 2.Figure 3.Figure 4.Figure 5.Figure 6.Figure 7.Figure 8.Figure 9.Figure 10.Figure 11.Figure 12.Figure 13.Figure 14.Figure 15.Figure 16.Figure 17.Figure 18.Figure 19.Figure 20.Figure 21.Figure 22.Figure 23.Figure 24.Figure 25.Figure 26.Figure 27.Figure 28.Figure 29.Figure 30.Figure 31.Figure 32.Figure 33.Figure 34.Figure 35.Figure 36.Figure 37.Figure 38.Figure 39.Figure 40.Figure 41.Figure 42.Figure 43.Figure 44.Figure 45.Figure 46.Figure 47.

Block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Schematic diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7DC parameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Load regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Ripple rejection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Dropout voltage vs junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Peak output current vs input/output differential voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Supply voltage rejection vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Output voltage vs junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Output impedance vs frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Quiescent current vs junction temp.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Load transient response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Line transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Quiescent current vs input voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Fixed output regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Current regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Circuit for increasing output voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Adjustable output regulator (7 to 30 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310.5 to 10 V regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32High current voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32High output current with short circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Tracking voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Split power supply (± 15 V - 1 A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Negative output voltage circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Switching regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34High input voltage circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35High output voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35High input and output voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Reducing power dissipation with dropping resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Remote shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Power AM modulator (unity voltage gain, IO ≤ 0.5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Adjustable output voltage with temperature compensation . . . . . . . . . . . . . . . . . . . . . . . . 37Light controllers (VOmin = VXX + VBE). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Protection against input short-circuit with high capacitance loads . . . . . . . . . . . . . . . . . . . 38Drawing dimension TO-220 (type SMIC-subcon.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Drawing dimension TO-220 (type STD-ST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Drawing dimension TO-220FP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Drawing dimension TO-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Drawing dimension DPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Drawing dimension tape and reel for DPAK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Drawing dimension D²PAK (type STD-ST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Drawing dimension D²PAK (type WOOSEOK-Subcon.). . . . . . . . . . . . . . . . . . . . . . . . . . . 50D²PAK footprint recommended data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Drawing dimension tape and reel for D²PAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

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List of tablesL78xx - L78xxC

List of tables

Table 1.Table 2.Table 3.Table 4.Table 5.Table 6.Table 7.Table 8.Table 9.Table 10.Table 11.Table 12.Table 13.Table 14.Table 15.Table 16.Table 17.Table 18.Table 19.Table 20.Table 21.Table 22.Table 23.Table 24.Table 25.Table 26.Table 27.Table 28.Table 29.Table 30.Table 31.Table 32.Table 33.

Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Absolute maximum ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Electrical characteristics of L7805 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Electrical characteristics of L7806 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Electrical characteristics of L7808 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Electrical characteristics of L7812 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Electrical characteristics of L7815 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Electrical characteristics of L7818 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Electrical characteristics of L7820 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Electrical characteristics of L7824 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Electrical characteristics of L7805C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Electrical characteristics of L7852C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Electrical characteristics of L7806C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Electrical characteristics of L7808C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Electrical characteristics of L7885C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Electrical characteristics of L7809C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Electrical characteristics of L7810C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Electrical characteristics of L7812C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Electrical characteristics of L7815C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Electrical characteristics of L7818C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Electrical characteristics of L7820C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Electrical characteristics of L7824C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28TO-220 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42TO-220FP mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44TO-3 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45DPAK mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Tape and reel DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48D²PAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51D²PAK footprint data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Tape and reel D²PAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

4/56

L78xx - L78xxCDiagram

1 Diagram

Figure 1. Block diagram5/56

Pin configurationL78xx - L78xxC

2

Figure 2. Pin configuration

Pin connections (top view)TO-220TO-220FPD2PAK (Any Type)DPAKTO-3

Figure 3. Schematic diagram6/56

L78xx - L78xxCMaximum ratings

3 Maximum ratings

Table 2.

SymbolVIIOPDTSTGTOP

DC input voltageOutput currentPower dissipation

Storage temperature range

Operating junction temperature range

for L7800for L7800C

Absolute maximum ratings

Parameter

for VO= 5 to 18 Vfor VO= 20, 24 V

Value3540

Internally limitedInternally limited-65 to 150-55 to 1500 to 150

°C°CUnitV

Note:

Absolute maximum ratings are those values beyond which damage to the device may occur.

Functional operation under these condition is not implied.Thermal data

Parameter

Thermal resistance junction-caseThermal resistance junction-ambient

D2PAK362.5

DPAK8100

TO-220550

TO-220FP

560

TO-3435

Unit°C/W°C/W

Table 3.

SymbolRthJCRthJA

Figure 4. Application circuits7/56

Test circuitsL78xx - L78xxC

4

Figure 5. Test circuits

DC parameter

Figure 6. Load regulation

Figure 7. Ripple rejection8/56

L78xx - L78xxCElectrical characteristics

5

Table 4.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics

Electrical characteristics of L7805 (refer to the test circuits, TJ = -55 to 150 °C, VI = 10 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 8 to 20 V

VI = 7 to 25 V, TJ = 25°CVI = 8 to 12 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 8 to 25 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 8 to 18 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

1.368

2170.752.2

1.23.32.5

0.6

40

Test conditions

Min.4.84.65

Typ.5531

Max.5.25.3550251002560.50.8

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

9/56

Electrical characteristicsTable 5.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

L78xx - L78xxC

Electrical characteristics of L7806 (refer to the test circuits, TJ = -55 to 150 °C, VI = 11 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 9 to 21 V

VI = 8 to 25 V, TJ = 25°CVI = 9 to 13 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 9 to 25 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 9 to 19 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

1.365

2190.752.2

1.23.32.5

0.7

40

Test conditions

Min.5.755.65

Typ.66

Max.6.256.3560301003060.50.8

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltageSupply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

10/56

L78xx - L78xxCElectrical characteristics

Table 6.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7808 (refer to the test circuits, TJ = -55 to 150 °C, VI = 14V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1A, PO ≤

VI = 11.5 to 23 V

VI = 10.5 to 25 V, TJ = 25°CVI = 11 to 17 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 11.5 to 25 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 11.5 to 21.5 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

1.362

2160.752.2

1.23.32.5

1

40

Test conditions

Min.7.77.6

Typ.88

Max.8.38.480401004060.50.8

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

11/56

Electrical characteristicsL78xx - L78xxC

Table 7.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7812 (refer to the test circuits, TJ = -55 to 150 °C, VI = 19 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 15.5 to 27 V

VI = 14.5 to 30 V, TJ = 25°CVI = 16 to 22 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 15 to 30 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 15 to 25 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

1.361

2180.752.2

1.23.32.5

1.5

40

Test conditions

Min.11.511.4

Typ.1212

Max.12.512.6120601006060.50.8

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

12/56

L78xx - L78xxCElectrical characteristics

Table 8.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7815 (refer to the test circuits, TJ = -55 to 150 °C, VI = 23 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 18.5 to 30 V

VI = 17.5 to 30 V, TJ = 25°CVI = 20 to 26 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 18.5 to 30 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 18.5 to 28.5 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

1.360

2190.752.2

1.23.32.5

1.8

40

Test conditions

Min.14.414.25

Typ.1515

Max.15.615.75150751507560.50.8

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

13/56

Electrical characteristicsL78xx - L78xxC

Table 9.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7818 (refer to the test circuits, TJ = -55 to 150 °C, VI = 26 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 22 to 33 V

VI = 21 to 33 V, TJ = 25°CVI = 24 to 30 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 22 to 33 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 22 to 32 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

1.359

2220.752.2

1.23.32.5

2.3

40

Test conditions

Min.17.317.1

Typ.1818

Max.18.718.9180901809060.50.8

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

14/56

L78xx - L78xxCElectrical characteristics

Table 10.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7820 (refer to the test circuits, TJ = -55 to 150 °C, VI = 28 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 24 to 35 V

VI = 22.5 to 35 V, TJ = 25°CVI = 26 to 32 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 24 to 35 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 24 to 35 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

1.358

2240.752.2

1.23.32.5

2.5

40

Test conditions

Min.19.219

Typ.2020

Max.20.82120010020010060.50.8

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

15/56

Electrical characteristicsL78xx - L78xxC

Table 11.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7824 (refer to the test circuits, TJ = -55 to 150 °C, VI = 33 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 28 to 38 V

VI = 27 to 38 V, TJ = 25°CVI = 30 to 36 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 28 to 38 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 28 to 38 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

1.356

2280.752.2

1.23.32.5

3

40

Test conditions

Min.2322.8

Typ.2424

Max.2525.224012024012060.50.8

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

16/56

L78xx - L78xxCElectrical characteristics

Table 12.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7805C (refer to the test circuits, TJ = 0 to 150 °C, VI = 10 V,IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 7 to 20 V

VI = 7 to 25 V, TJ = 25°CVI = 8 to 12 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 7 to 25 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 8 to 18 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

62

2170.752.2-1.140

Test conditions

Min.4.84.75

Typ.5531

Max.5.25.25100501005080.50.8

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

17/56

Electrical characteristicsL78xx - L78xxC

Table 13.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7852C (refer to the test circuits, TJ = 0 to 150 °C, VI = 10 V,IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 8 to 20 V

VI = 7 to 25 V, TJ = 25°CVI = 8 to 12 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 7 to 25 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 8 to 18 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

61

2170.752.2-142

Test conditions

Min.5.04.95

Typ.5.25.231

Max.5.45.45105521055280.51.3

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

18/56

L78xx - L78xxCElectrical characteristics

Table 14.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7806C (refer to the test circuits, TJ = 0 to 150 °C, VI = 11 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 8 to 21 V

VI = 8 to 25 V, TJ = 25°CVI = 9 to 13 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 8 to 25 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 9 to 19 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

59

2190.552.2-0.845

Test conditions

Min.5.755.7

Typ.66

Max.6.256.3120601206080.51.3

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltageSupply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

19/56

Electrical characteristicsL78xx - L78xxC

Table 15.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7808C (refer to the test circuits, TJ = 0 to 150 °C, VI = 14 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 10.5 to 25 V

VI = 10.5 to 25 V, TJ = 25°CVI = 11 to 17 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 10.5 to 25 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 11.5 to 21.5 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

56

2160.452.2-0.852

Test conditions

Min.7.77.6

Typ.88

Max.8.38.4160801608080.51

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

20/56

L78xx - L78xxCElectrical characteristics

Table 16.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7885C (refer to the test circuits, TJ = 0 to 150 °C, VI = 14.5 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 11 to 26 V

VI = 11 to 27 V, TJ = 25°CVI = 11.5 to 17.5 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 11 to 27 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 12 to 22V, f = 120HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

56

2160.452.2-0.855

Test conditions

Min.8.28.1

Typ.8.58.5

Max.8.88.9160801608080.51

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

21/56

Electrical characteristicsL78xx - L78xxC

Table 17.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7809C (refer to the test circuits, TJ = 0 to 150 °C, VI = 15 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 11.5 to 26 V

VI = 11.5 to 26 V, TJ = 25°CVI = 12 to 18 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 11.5 to 26 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 12 to 23 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

55

2170.402.2-170

Test conditions

Min.8.648.55

Typ.99

Max.9.369.45180901809080.51

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

22/56

L78xx - L78xxCElectrical characteristics

Table 18.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7810C (refer to the test circuits, TJ = 0 to 150 °C, VI = 15 V,IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 12.5 to 26 V

VI = 12.5 to 26 V, TJ = 25°CVI = 13.5 to 19 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 12.5 to 26 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 13 to 23 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

55

2170.402.2-170

Test conditions

Min.9.69.5

Typ.1010

Max.10.410.520010020010080.51

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

23/56

Electrical characteristicsL78xx - L78xxC

Table 19.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7812C (refer to the test circuits, TJ = 0 to 150 °C, VI = 19 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 14.5 to 27 V

VI = 14.5 to 30 V, TJ = 25°CVI = 16 to 22 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 14.5 to 30 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 15 to 25 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

55

2180.352.2-175

Test conditions

Min.11.511.4

Typ.1212

Max.12.512.624012024012080.51

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

24/56

L78xx - L78xxCElectrical characteristics

Table 20.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7815C (refer to the test circuits, TJ = 0 to 150 °C, VI = 23 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 17.5 to 30 V

VI = 17.5 to 30 V, TJ = 25°CVI = 20 to 26 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1AVI = 17.5 to 30 VIO = 5 mA

B =10 Hz to 100kHz, TJ = 25°CVI = 18.5 to 28.5 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

54

2190.232.2-190

Test conditions

Min.14.514.25

Typ.1515

Max.15.615.7530015030015080.51

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

25/56

Electrical characteristicsL78xx - L78xxC

Table 21.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7818C (refer to the test circuits, TJ = 0 to 150 °C, VI = 26 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 21 to 33 V

VI = 21 to 33 V, TJ = 25°CVI = 24 to 30 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 21 to 33 VIO = 5 mA

B = 10 Hz to 100 kHz, TJ = 25°CVI = 22 to 32 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

53

2220.202.1-1110

Test conditions

Min.17.317.1

Typ.1818

Max.18.718.936018036018080.51

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

26/56

L78xx - L78xxCElectrical characteristics

Table 22.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

Electrical characteristics of L7820C (refer to the test circuits, TJ = 0 to 150 °C, VI = 28 V,IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 23 to 35 V

VI = 22.5 to 35 V, TJ = 25°CVI = 26 to 32 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 23 to 35 VIO = 5 mA

B =10 Hz to 100 kHz, TJ = 25°CVI = 24 to 35 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

52

2240.182.1-1150

Test conditions

Min.19.219

Typ.2020

Max.20.82140020040020080.51

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

27/56

Electrical characteristicsTable 23.

SymbolVOVOΔVO(1)ΔVO(1)IdΔIdΔVO/ΔTeNSVRVdROIscIscp

L78xx - L78xxC

Electrical characteristics of L7824C (refer to the test circuits, TJ = 0 to 150 °C, VI = 33 V,IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified)

Parameter

Output voltageOutput voltageLine regulation

TJ = 25°C

15 WIO = 5 mA to 1 A, PO ≤

VI = 27 to 38 V

VI = 27 to 38 V, TJ = 25°CVI = 30 to 36 V, TJ = 25°CIO = 5 mA to 1.5 A, TJ = 25°CIO = 250 to 750 mA, TJ = 25°CTJ = 25°CIO = 5 mA to 1 AVI = 27 to 38 VIO = 5 mA

B = 10 Hz to 100 kHz, TJ = 25°CVI = 28 to 38 V, f = 120 HzIO = 1 A, TJ = 25°Cf = 1 kHz

VI = 35 V, TJ = 25°CTJ = 25°C

50

2280.152.1-1.5170

Test conditions

Min.2322.8

Typ.2424

Max.2525.248024048024080.51

UnitVVmV

Load regulationQuiescent currentQuiescent current changeOutput voltage driftOutput noise voltage Supply voltage rejectionDropout voltageOutput resistanceShort circuit currentShort circuit peak current

mVmAmAmV/°CµV/VOdBVmΩAA

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

28/56

L78xx - L78xxCTypical performance

6 Typical performance

Figure 8.

Dropout voltage vs junction

temperatureFigure 9.

Peak output current vs input/output differential voltageFigure 10.Supply voltage rejection vs

frequency Figure 11.Output voltage vs junction

temperature Figure 12.Output impedance vs frequency Figure 13.Quiescent current vs junction temp. 29/56

Typical performanceL78xx - L78xxC

Figure 14.Load transient response Figure 15.Line transient response Figure 16.Quiescent current vs input voltage

Figure 17.Fixed output regulator 1.To specify an output voltage, substitute voltage value for \"XX\".

2.Although no output capacitor is need for stability, it does improve transient response.3.Required if regulator is locate an appreciable distance from power supply filter.

30/56

L78xx - L78xxC

Typical performance

Figure 18.Current regulator IO = VXX/R1+Id

Figure 19.Circuit for increasing output voltage IR1 ≥ 5 IdVO = VXX(1+R2/R1)+IdR2

Figure 20.Adjustable output regulator (7 to 30 V) 31/56Typical performance

L78xx - L78xxC

Figure 21.0.5 to 10 V regulator VO=VXXR4/R1

Figure 22.High current voltage regulator VBEQ1R1 = ______________IREQ-(IQ1/βQ1)VBEQ1IO = IREG + Q1 (IREG ______)R1

Figure 23.High output current with short circuit protection RSC=VBEQ2/ISC32/56

L78xx - L78xxC

Typical performance

Figure 24.Tracking voltage regulator

Figure 25.Split power supply (± 15 V - 1 A) * Against potential latch-up problems.

33/56

Typical performance

L78xx - L78xxC

Figure 26.Negative output voltage circuit

Figure 27.Switching regulator

Figure 28.High input voltage circuit VIN = VI - (VZ + VBE)34/56

L78xx - L78xxC

Figure 29.High input voltage circuit Typical performance

Figure 30.High output voltage regulator Figure 31.High input and output voltage VO = VXX + VZ135/56

Typical performance

L78xx - L78xxC

Figure 32.Reducing power dissipation with dropping resistor VI(min)-VXX-VDROP(max)R = ____________________IO(max)+Id(max)

Figure 33.Remote shutdown

Figure 34.Power AM modulator (unity voltage gain, IO ≤ 0.5) Note:

36/56

The circuit performs well up to 100 kHz.

L78xx - L78xxCTypical performance

Figure 35.Adjustable output voltage with temperature compensation VO = VXX (1+R2/R1) + VBENote:

Q2 is connected as a diode in order to compensate the variation of the Q1 VBE with the temperature. C allows a slow rise time of the VO.

Figure 36.Light controllers (VOmin = VXX + VBE) VO falls when the light goes upVO rises when the light goes up37/56

Typical performanceL78xx - L78xxC

Figure 37.Protection against input short-circuit with high capacitance loads 1.Application with high capacitance loads and an output voltage greater than 6 volts need an external diode

(see Figure32 on page36) to protect the device against input short circuit. In this case the input voltage falls rapidly while the output voltage decrease slowly. The capacitance discharges by means of the Base-Emitter junction of the series pass transistor in the regulator. If the energy is sufficiently high, the transistor may be destroyed. The external diode by-passes the current from the IC to ground.

38/56

L78xx - L78xxCPackage mechanical data

7 Package mechanical data

In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.

39/56

Package mechanical dataL78xx - L78xxC

Figure 38.Drawing dimension TO-220 (type SMIC-subcon.) 0015988/F40/56

L78xx - L78xxCPackage mechanical data

Figure 39.Drawing dimension TO-220 (type STD-ST) 0015988/A41/56

Package mechanical dataL78xx - L78xxC

Table 24.TO-220 mechanical data

Type STD-ST

Type SMIC-Subcon.

mm.

Max.4.600.881.700.70

Min.4.470.801.15

0.560.38

15.25

1.27

10.002.404.951.236.202.4013.003.50

16.4028.90

3.752.65

3.852.95

2.72

10.402.705.151.326.602.7214.003.93

16.252.0413.35102.294.83

10.152.545.081.276.242.6713.503.9016.4028.743.832.74

2.8016.552.9213.6510.302.795.33

15.75

15.07

15.24

15.45

Typ.4.570.81

Max.4.670.861.44

Dim.

Min.

AA1b1cc1DD1Eee1FH1J1LL1L20L30∅PQ

4.400.611.140.49

mm.Typ.

Note:In spite of some difference in tolerances, the packages are compatible.

42/56

L78xx - L78xxCPackage mechanical data

Figure 40.Drawing dimension TO-220FP 7012510A-H43/56

Package mechanical dataL78xx - L78xxC

Table 25.

Dim.

TO-220FP mechanical data

mm.

Min.

Typ.

Max.4.602.72.750.7011.501.505.22.710.40

16

28.69.82.915.993

30.610.63.616.49.33.2

1.1260.3850.1140.6260.3540.118Min.0.1730.0980.0980.0170.0300.0450.0450.1940.0940.393

0.630

1.2040.4170.1420.6450.3660.126

inch.Typ.

Max.0.1810.1060.1080.0270.0390.0590.0590.2040.1060.409

ABDEFF1F2GG1HL2L3L4L5L6L7DIA.

4.402.52.50.450.751.151.154.952.410.0

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L78xx - L78xxC

Package mechanical data

Figure 41.Drawing dimension TO-3 PGADCUVONRP003C/CTable 26.

Dim.

TO-3 mechanical data

mm.

Min.

Typ.11.85

0.96

1.05

1.101.708.720.0

10.916.9

26.2

3.88

4.0939.5

30.10

1.185

0.152

0.4290.665

1.0310.1611.555

0.037

Max.

Min.

inch.Typ.0.4660.041

0.0430.0660.3420.787Max.

ABCDEGNPRUV

BE45/56

Package mechanical dataL78xx - L78xxC

Figure 42.Drawing dimension DPAK 0068772-F46/56

L78xx - L78xxCPackage mechanical data

Table 27.

Dim.

DPAK mechanical data

mm.

Min.

Typ.

Max.2.41.10.230.95.40.60.66.2

5.1

6.4

4.72.28

4.49.351

2.80.8

0.6

0.2

1

0.023

0.008

4.610.1

0.1730.3680.039

0.1100.031

0.039

6.6

0.252

0.1850.090

0.1810.397

Min.0.0860.0350.0010.0250.2040.0170.0190.236

0.200

0.260

inch.Typ.

Max.0.0940.0430.0090.0350.2120.0230.0230.244

AA1A2Bb4CC2DD1EE1ee1HL(L1)L2L4RV2

2.20.90.030.645.20.450.486

47/56

Package mechanical dataL78xx - L78xxC

Figure 43.Drawing dimension tape and reel for DPAK Table 28.

Dim.

Tape and reel DPAK mechanical data

mm.

Min.

Typ.

Max.330

12.820.260

22.4

6.8010.402.553.97.9

6.9010.502.654.08.0

7.0010.602.754.18.1

0.2680.4090.1000.1530.311

0.2720.4130.1040.1570.315

13.0

13.2

0.5040.7952.362

0.8820.2.760.4170.1050.1610.319

0.512

Min.

inch.Typ.

Max.12.9920.519

ACDNTAoBoKoPoP

48/56

L78xx - L78xxCPackage mechanical data

Figure 44.Drawing dimension D²PAK (type STD-ST) 0079457/L49/56

Package mechanical dataL78xx - L78xxC

Figure 45.Drawing dimension D²PAK (type WOOSEOK-Subcon.) 0079457/L50/56

L78xx - L78xxCPackage mechanical data

Table 29.

D²PAK mechanical data

TYPE STD-ST

TYPE WOOSEOK-Subcon.

mm.

Max.4.600.230.931.700.601.369.35

Min.4.3000.701.170.451.2597.50

10.40

9.807.50

2.54

4.88152.492.291.271.30

0.4

5.2815.852.692.791.401.75

152.201.7911.20

0.30

2.545.0815.30

15.602.602.791.401.6010.20

0.501.309.20Typ.

Max.4.700.200.901.370.601.409.40

Dim.

Min.

AA1bb2cc2DD1EE1ee1HJ1LL1L2RV2

4.400.030.701.140.451.238.957.50108.50

mm.Typ.

Note:

The D²PAK package coming from the subcontractor Wooseok is fully compatible with the ST's package suggested footprint.

51/56

Package mechanical dataL78xx - L78xxC

Figure 46.D²PAK footprint recommended data Table 30.D²PAK footprint data

Values

Dim.ABCDEFG

mm.12.209.7516.903.501.602.545.08

inch.0.4800.3840.6650.1380.0630.1000.200

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L78xx - L78xxCPackage mechanical data

Table 31.

Dim.

Tape and reel D²PAK mechanical data

mm.

Min.

Typ.

Max.180

12.820.260

14.4

10.5015.704.803.911.9

10.615.804.904.012.0

10.7015.905.004.112.1

0.4130.6180.1890.1530.468

0.4170.6220.1930.1570.472

13.0

13.2

0.5040.7952.362

0.5670.4210.6260.1970.1610.476

0.512

Min.

inch.Typ.

Max.7.0860.519

ACDNTAoBoKoPoP

Figure 47.Drawing dimension tape and reel for D²PAK 53/56

Order codesL78xx - L78xxC

8 Order codes

Table 32.

Order codes

Order codes

Part numbers

TO-220

L7805L7805CL7806CL7808CL7885CL7809CL7812CL7815CL7818CL7824C

L7805CVL7806CVL7808CVL7885CVL7809CVL7812CVL7815CVL7818CVL7824CV

L7805CDT-TR

L7805CD2T-TRL7806CD2T-TRL7808CD2T-TRL7885CD2T-TR (1)L7809CD2T-TRL7812CD2T-TRL7815CD2T-TRL7818CD2T-TR (1)L7824CD2T-TR

L7824CPL7808CPL7885CP (1)L7809CPL7812CPL7815CP

L7812CTL7815CTL7818CTL7824CTL7885CT (1)

L7805CP

DPAK

D2PAK

TO-220FP

TO-3L7805TL7805CTL7806CT

1.Available on request.

54/56

L78xx - L78xxCRevision history

9

Table 33.

Date

Revision history

Document revision history

Revision

1213141516171819

Document updating.

Order codes has been updated and new template.

D2PAK mechanical data has been updated and add footprint data.Order codes has been updated.Added Table1 in cover page.Modified: Table32.

Added: TO-220 mechanical data Figure38 on page40, Figure39 on page41 and Table24 on page42. Modified: Table32 on page54.

Added: Table27: DPAK mechanical data on page47., Table28: Tape and reel DPAK mechanical data on page48. Modified: Table32 on page54.

Changes

21-Jun-200403-Aug-200619-Jan-200731-May-200729-Aug-200711-Dec-200706-Feb-200818-Mar-2008

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L78xx - L78xxC

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