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LM7812(1)

来源：五一七教育网

Revised December 2005

LM7805 • LM7806 • LM7808 • LM7809 •

LM7810 • LM7812 • LM7815 • LM7818 • LM7824 • LM7805A • LM7806A • LM7808A •LM7809A •

LM7810A • LM7812A • LM7815A • LM7818A • LM7824A3-Terminal 1A Positive Voltage Regulator

General Description

The LM78XX series of three terminal positive regulators areavailable in the TO-220 package and with several fixed outputvoltages, making them useful in a wide range of applications.Each type employs internal current limiting, thermal shut downand safe operating area protection, making it essentially inde-structible. If adequate heat sinking is provided, they can deliverover 1A output current. Although designed primarily as fixedvoltage regulators, these devices can be used with externalcomponents to obtain adjustable voltages and currents.

Features

OOutput Current up to 1A

OOutput Voltages of 5, 6, 8, 9, 12, 15, 18, 24OThermal Overload Protection OShort Circuit Protection

OOutput Transistor Safe Operating Area Protection

Ordering Code:

Product Number

LM7805CTLM7806CTLM7808CTLM7809CTLM7810CTLM7812CTLM7815CTLM7818CTLM7824CTLM7805ACTLM7806ACTLM7808ACTLM7809ACTLM7810ACTLM7812ACTLM7815ACTLM7818ACTLM7824ACT

TO-220

Output Voltage TolerancePackageOperating Temperature

r4%󰀂40qC - 󰀄125qC

r2%0qC - 󰀄125qC

LM7805 • LM7806 • LM7808 • LM7809 • LM7810 • LM7812 • LM7815 • LM7818 • LM7824 • LM7805A • LM7806A • LM7808A•LM7809A • LM7810A • LM7812A • LM7815A • LM7818A • LM7824AInternal Block Diagram

www.fairchildsemi.com2

LM7805 • LM7806 • LM7808 • LM7809 • LM7810 • LM7812 • LM7815 • LM7818 • LM7824 • LM7805A • LM7806A • LM7808A•LM7809A • LM7810A • LM7812A • LM7815A • LM7818A • LM7824AAbsolute Maximum Ratings(Note 1)

Parameter

Input Voltage (for VO = 5V to 18V)(for VO = 24V)

Thermal Resistance Junction-Cases (TO-220)Thermal Resistance Junction-Air (TO-220)Operating Temperature Range LM78xxLM78xxA

Storage Temperature Range

TSTG

Symbol

VIVIRTJCRTJATOPR

Value

35405650 a 󰀄125

Unit

qC/WqC/WqCqCqCqC

󰀂40 a 󰀄1250 a 󰀄125

󰀂65 a 󰀄150

Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The datasheet specifications should be met, without exception, to ensurethat the system design is reliable over its power supply, temperature, and output/input loading variables. Fairchild does not recommend operation outside datasheet specifica-tions.

Electrical Characteristics (LM7805)

(Refer to the test circuits. 󰀂40qC 󰀅 TJ 󰀅 125qC, IO = 500mA, VI = 10V, CI = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

5mA d IO d 1A, PO d 15W, VI = 7V to 20V

Line Regulation(Note 2)Load Regulation

Regload

TJ = 󰀀25qC

Regline

TJ = 󰀀25qC

VO = 7V to 25VVI = 8V to 12VIO = 5mA to 1.5mAIO = 250mA to 750mA

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1AVI = 7V to 25V

Output Voltage Drift (Note 3)Output Noise VoltageRipple Rejection (Note 3)Dropout Voltage

Output Resistance (Note 3)Short Circuit CurrentPeak Current (Note 3)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, VO = 8V to 18VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Conditions

Min4.84.75–––––––––62.0––––

Typ5.05.04.01.69.04.05.00.030.3󰀅0.842.073.02.015.02302.2

Max5.25.2510050.010050.08.00.51.3–––––––

UnitV

mVmAmAmV/qCPV/VOdBVm:mAA

Note 2: 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 withlow duty is used.

Note 3: These parameters, although guaranteed, are not 100% tested in production.

3www.fairchildsemi.com

LM7805 • LM7806 • LM7808 • LM7809 • LM7810 • LM7812 • LM7815 • LM7818 • LM7824 • LM7805A • LM7806A • LM7808A•LM7809A • LM7810A • LM7812A • LM7815A • LM7818A • LM7824AElectrical Characteristics (LM7806)

(Refer to the test circuits. 󰀂40qC 󰀅 TJ 󰀅 125qC, IO = 500mA, VI = 11V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

5mA d IO d 1A, PO d 15W, VI = 8.0V to 21V

Line Regulation(Note 4)Load Regulation (Note 4)

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1AVI = 8V to 25V

Output Voltage Drift (Note 5)Output Noise VoltageRipple Rejection (Note 5)Dropout Voltage

Output Resistance (Note 5)Short Circuit CurrentPeak Current (Note 5)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, VO = 8V to 18VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Regload

TJ = 󰀀25qC

Regline

TJ = 󰀀25qC

VI = 8V to 25VVI = 9V to 13VIO = 5mA to 1.5mAIO = 250mA to 750mAConditions

Min5.755.7–––––––––62.0––––

Typ6.06.05.01.59.03.05.0––󰀅0.845.073.02.019.02502.2

Max6.256.312060.012060.08.00.51.3–––––––

UnitV

mVmAmAmV/qCPV/VOdBVm:mAA

Note 4: 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 withlow duty is used.

Note 5: These parameters, although guaranteed, are not 100% tested in production.

Electrical Characteristics (LM7808)

(Refer to the test circuits. 󰀂40qC 󰀅 TJ 󰀅 125qC, IO = 500mA, VI = 14V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

5mA d IO d 1A, PO d 15W, VI = 10.5V to 23V

Line Regulation(Note 6)Load Regulation (Note 6)

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1AVI = 10.5V to 25V

Output Voltage Drift (Note 7)Output Noise VoltageRipple Rejection (Note 7)Dropout Voltage

Output Resistance (Note 7)Short Circuit CurrentPeak Current (Note 7)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, VO = 11.5V to 21.5VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Regload

TJ = 󰀀25qC

Regline

TJ = 󰀀25qC

VI = 10.5V to 25VVI = 11.5V to 17VIO = 5mA to 1.5mAIO = 250mA to 750mAConditions

Min7.77.6–––––––––56.0––––

Typ8.08.05.02.010.05.05.00.050.5󰀅0.852.073.02.017.02302.2

Max8.38.416080.016080.08.00.51.0–––––––

UnitV

mVmAmAmV/qCPV/VOdBVm:mAA

Note 6: 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 withlow duty is used.

Note 7: These parameters, although guaranteed, are not 100% tested in production.

www.fairchildsemi.com4

(Refer to the test circuits. 󰀂40qC 󰀅 TJ 󰀅 125qC, IO = 500mA, VI = 15V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

5mA d IO d 1A, PO d 15W, VI = 11.5V to 24V

Line Regulation(Note 8)Load Regulation (Note 8)

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1AVI = 11.5V to 26V

Output Voltage Drift (Note 9)Output Noise VoltageRipple Rejection (Note 9)Dropout Voltage

Output Resistance (Note 9)Short Circuit CurrentPeak Current (Note 9)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, VO = 13V to 23VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Regload

TJ = 󰀀25qC

Regline

TJ = 󰀀25qC

VI = 11.5V to 25VVI = 12V to 17VIO = 5mA to 1.5mAIO = 250mA to 750mAConditions

Min8.658.6–––––––––56.0––––

Typ9.09.06.02.012.04.05.0––󰀅1.058.071.02.017.02502.2

Max9.359.418090.018090.08.00.51.3–––––––

UnitV

mVmAmAmV/qCPV/VOdBVm:mAA

Note 8: 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 withlow duty is used.

Note 9: These parameters, although guaranteed, are not 100% tested in production.

Electrical Characteristics (LM7810)

(Refer to the test circuits. 󰀂40qC 󰀅 TJ 󰀅 125qC, IO = 500mA, VI = 16V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

5mA d IO d 1A, PO d 15W, VI = 12.5V to 25V

Line Regulation(Note 10)Load Regulation (Note 10)Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1AVI = 12.5V to 29V

Output Voltage Drift (Note 11)Output Noise VoltageRipple Rejection (Note 11)Dropout Voltage

Output Resistance (Note 11)Short Circuit CurrentPeak Current (Note 11)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, VO = 13V to 23VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Regload

TJ = 󰀀25qC

Regline

TJ = 󰀀25qC

VI = 12.5V to 25VVI = 13V to 25VIO = 5mA to 1.5mAIO = 250mA to 750mAConditions

Min9.69.5–––––––––56.0––––

Typ10.010.010.03.012.04.05.1––󰀅1.058.071.02.017.02502.2

Max10.410.52001002004008.00.51.0–––––––

UnitV

mVmAmAmV/qCPV/VOdBVm:mAA

Note 10: 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 withlow duty is used.

Note 11: These parameters, although guaranteed, are not 100% tested in production.

5www.fairchildsemi.com

(Refer to the test circuits. 󰀂40qC 󰀅 TJ 󰀅 125qC, IO = 500mA, VI = 19V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

5mA d IO d 1A, PO d 15W, VI = 14.5V to 27V

Line Regulation(Note 12)Load Regulation (Note 12)Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1AVI = 14.5V to 30V

Output Voltage Drift (Note 13)Output Noise VoltageRipple Rejection (Note 13)Dropout Voltage

Output Resistance (Note 13)Short Circuit CurrentPeak Current (Note 13)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, VI = 15V to 25VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Regload

TJ = 󰀀25qC

Regline

TJ = 󰀀25qC

VI = 14.5V to 30VVI = 16V to 22VIO = 5mA to 1.5mAIO = 250mA to 750mAConditions

Min11.511.4–––––––––55.0––––

Typ12.012.010.03.011.05.05.10.10.5󰀅1.076.071.02.018.02302.2

Max12.512.62401202401208.00.51.0–––––––

UnitV

mVmAmAmV/qCPV/VOdBVm:mAA

Note 12: 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 withlow duty is used.

Note 13: These parameters, although guaranteed, are not 100% tested in production.

Electrical Characteristics (LM7815)

(Refer to the test circuits. 󰀂40qC 󰀅 TJ 󰀅 125qC, IO = 500mA, VI = 23V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

5mA d IO d 1A, PO d 15W, VI = 17.5V to 30V

Line Regulation(Note 14)Load Regulation (Note 14)Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1AVI = 17.5V to 30V

Output Voltage Drift (Note 15)Output Noise VoltageRipple Rejection (Note 15)Dropout Voltage

Output Resistance (Note 15)Short Circuit CurrentPeak Current (Note 15)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, VI = 18.5V to 28.5VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Regload

TJ = 󰀀25qC

Regline

TJ = 󰀀25qC

VI = 17.5V to 30VVI = 20V to 26VIO = 5mA to 1.5mAIO = 250mA to 750mAConditions

Min14.414.25–––––––––54.0––––

Typ15.015.011.03.012.04.05.2––󰀅1.090.070.02.019.02502.2

Max15.615.753001503001508.00.51.0–––––––

UnitV

mVmAmAmV/qCPV/VOdBVm:mAA

Note 14: 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 withlow duty is used.

Note 15: These parameters, although guaranteed, are not 100% tested in production.

www.fairchildsemi.com6

(Refer to the test circuits. 󰀂40qC 󰀅 TJ 󰀅 125qC, IO = 500mA, VI = 27V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

5mA d IO d 1A, PO d 15W, VI = 21V to 33V

Line Regulation(Note 12)Load Regulation (Note 12)Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1AVI = 21V to 33V

Output Voltage Drift (Note 17)Output Noise VoltageRipple Rejection (Note 17)Dropout Voltage

Output Resistance (Note 17)Short Circuit CurrentPeak Current (Note 17)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, VI = 22V to 32VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Regload

TJ = 󰀀25qC

Regline

TJ = 󰀀25qC

VI = 21V to 33VVI = 24V to 30VIO = 5mA to 1.5mAIO = 250mA to 750mAConditions

Min17.317.1–––––––––53.0––––

Typ18.018.015.05.015.05.05.2––󰀅1.011069.02.022.02502.2

Max18.718.93601803601808.00.51.0–––––––

UnitV

mVmAmAmV/qCPV/VOdBVm:mAA

Note 16: 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 withlow duty is used.

Note 17: These parameters, although guaranteed, are not 100% tested in production.

Electrical Characteristics (LM7824)

(Refer to the test circuits. 󰀂40qC 󰀅 TJ 󰀅 125qC, IO = 500mA, VI = 33V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

5mA d IO d 1A, PO d 15W, VI = 27V to 38V

Line Regulation(Note 18)Load Regulation (Note 18)Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1AVI = 27V to 38V

Output Voltage Drift (Note 19)Output Noise VoltageRipple Rejection (Note 19)Dropout Voltage

Output Resistance (Note 19)Short Circuit CurrentPeak Current (Note 19)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, VI = 28V to 38VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Regload

TJ = 󰀀25qC

Regline

TJ = 󰀀25qC

VI = 27V to 38VVI = 30V to 36VIO = 5mA to 1.5mAIO = 250mA to 750mAConditions

Min23.022.8–––––––––50.0––––

Typ24.024.017.06.015.05.05.20.10.5󰀅1.560.067.02.028.02302.2

Max25.025.254802404802408.00.51.0–––––––

UnitV

mVmAmAmV/qCPV/VOdBVm:mAA

Note 18: 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 withlow duty is used.

Note 19: These parameters, although guaranteed, are not 100% tested in production.

7www.fairchildsemi.com

(Refer to the test circuits. 0qC 󰀅 TJ 󰀅 125qC, IO = 1A, VI = 10V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

IO = 5mA to 1A, PO d 15W, VI = 7.5V to 20V

Line Regulation(Note 20)

Regline

VI = 7.5V to 25V, IO = 500mAVI = 8V to 12VTJ = 󰀀25qC

VI = 7.3V to 20VVI = 8V to 12V

Load Regulation (Note 20)

Regload

TJ = 󰀀25qC, IO = 5mA to 1.5mAIO = 5mA to 1mAIO = 250mA to 750mA

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1A

VI = 8V to 25V, IO = 500mAVI = 7.5V to 20V, TJ = 󰀀25qC

Output Voltage Drift (Note 21)Output Noise VoltageRipple Rejection (Note 21)Dropout Voltage

Output Resistance (Note 21)Short Circuit CurrentPeak Current (Note 21)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, IO = 500mA, VI = 8V to 18VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Conditions

Min4.94.8––––––––––––––––––

Typ5.05.0‘5.03.05.01.59.09.04.05.0–––󰀅0.810.068.02.017.02502.2

Max5.15.250.050.050.025.010010050.06.00.50.80.8–––––––

mV/qCPV/VOdBVm:mAAmAmAmVmVUnitV

Note 20: 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 withlow duty is used.

Note 21: These parameters, although guaranteed, are not 100% tested in production.

www.fairchildsemi.com8

(Refer to the test circuits. 0qC 󰀅 TJ 󰀅 125qC, IO = 1A, VI = 11V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

IO = 5mA to 1A, PO d 15W, VI = 8.6V to 21V

Line Regulation(Note 22)

Regline

VI = 8.6V to 25V, IO = 500mAVI = 9V to 13VTJ = 󰀀25qC

VI = 8.3V to 21VVI = 9V to 13V

Load Regulation (Note 22)

Regload

TJ = 󰀀25qC, IO = 5mA to 1.5mAIO = 5mA to 1mAIO = 250mA to 750mA

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1A

VI = 19V to 25V, IO = 500mAVI = 8.5V to 21V, TJ = 󰀀25qC

Output Voltage Drift (Note 23)Output Noise VoltageRipple Rejection (Note 23)Dropout Voltage

Output Resistance (Note 23)Short Circuit CurrentPeak Current (Note 23)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, IO = 500mA, VI = 9V to 19VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Conditions

Min5.585.76––––––––––––––––––

Typ6.06.05.03.05.01.59.04.05.04.3–––󰀅0.810.065.02.017.02502.2

Max6.126.2460.060.060.030.010010050.06.00.50.80.8–––––––

mV/qCPV/VOdBVm:mAAmAmAmVmVUnitV

Note 22: 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 withlow duty is used.

Note 23: These parameters, although guaranteed, are not 100% tested in production.

9www.fairchildsemi.com

(Refer to the test circuits. 0qC 󰀅 TJ 󰀅 125qC, IO = 1A, VI = 14V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

IO = 5mA to 1A, PO d 15W, VI = 10.6V to 23V

Line Regulation(Note 24)

Regline

VI = 10.6V to 25V, IO = 500mAVI = 11V to 17VTJ = 󰀀25qC

VI = 10.4V to 23VVI = 11V to 17V

Load Regulation (Note 24)

Regload

TJ = 󰀀25qC, IO = 5mA to 1.5mAIO = 5mA to 1mAIO = 250mA to 750mA

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1A

VI = 11V to 25V, IO = 500mAVI = 10.6V to 23V, TJ = 󰀀25qC

Output Voltage Drift (Note 25)Output Noise VoltageRipple Rejection (Note 25)Dropout Voltage

Output Resistance (Note 25)Short Circuit CurrentPeak Current (Note 25)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qC

f = 120Hz, IO = 500mA, VI = 11.5V to 21.5VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Conditions

Min7.847.7––––––––––––––––––

Typ8.08.06.03.06.02.012.012.05.05.0–––󰀅0.810.062.02.018.02502.2

Max8.168.380.080.080.040.010010050.06.00.50.80.8–––––––

mV/qCPV/VOdBVm:mAAmAmAmVmVUnitV

Note 24: 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 withlow duty is used.

Note 25: These parameters, although guaranteed, are not 100% tested in production.

www.fairchildsemi.com10

(Refer to the test circuits. 0qC 󰀅 TJ 󰀅 125qC, IO = 1A, VI = 15V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

IO = 5mA to 1A, PO d 15W, VI = 11.2V to 24V

Line Regulation(Note 26)

Regline

VI = 11.7V to 25V, IO = 500mAVI = 12.5V to 19VTJ = 󰀀25qC

VI = 11.5V to 24VVI = 12.5V to 19V

Load Regulation (Note 26)

Regload

TJ = 󰀀25qC, IO = 5mA to 1.0mAIO = 5mA to 1mAIO = 250mA to 750mA

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1A

VI = 12V to 25V, IO = 500mAVI = 11.7V to 25V, TJ = 󰀀25qC

Output Voltage Drift (Note 27)Output Noise VoltageRipple Rejection (Note 27)Dropout Voltage

Output Resistance (Note 27)Short Circuit CurrentPeak Current (Note 27)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, IO = 500mA, VI = 12V to 22VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Conditions

Min8.828.65––––––––––––––––––

Typ9.09.06.04.06.02.012.012.05.05.0–––󰀅1.010.062.02.017.02502.2

Max9.169.3590.045.090.045.010010050.06.00.50.80.8–––––––

mV/qCPV/VOdBVm:mAAmAmAmVmVUnitsV

Note 26: 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 withlow duty is used.

Note 27: These parameters, although guaranteed, are not 100% tested in production.

11www.fairchildsemi.com

(Refer to the test circuits. 0qC 󰀅 TJ 󰀅 125qC, IO = 1A, VI = 16V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

IO = 5mA to 1A, PO d 15W, VI = 12.8V to 25V

Line Regulation(Note 28)

Regline

VI = 12.8V to 26V, IO = 500mAVI = 13V to 20VTJ = 󰀀25qC

VI = 12.5V to 25VVI = 13V to 20V

Load Regulation (Note 28)

Regload

TJ = 󰀀25qC, IO = 5mA to 1.5mAIO = 5mA to 1mAIO = 250mA to 750mA

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1A

VI = 12.8V to 25V, IO = 500mAVI = 13V to 26V, TJ = 󰀀25qC

Output Voltage Drift (Note 29)Output Noise VoltageRipple Rejection (Note 29)Dropout Voltage

Output Resistance (Note 29)Short Circuit CurrentPeak Current (Note 29)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, IO = 500mA, VI = 14V to 24VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Conditions

Min9..6––––––––––––––––––

Typ10.010.08.04.08.03.012.012.05.05.0–––󰀅1.010.062.02.017.02502.2

Max10.210.410050.010050.010010050.06.00.50.80.5–––––––

mV/qCPV/VOdBVm:mAAmAmAmVmVUnitsV

Note 28: 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 withlow duty is used.

Note 29: These parameters, although guaranteed, are not 100% tested in production.

www.fairchildsemi.com12

(Refer to the test circuits. 0qC 󰀅 TJ 󰀅 125qC, IO = 1A, VI = 19V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

IO = 5mA to 1A, PO d 15W, VI = 14.8V to 27V

Line Regulation(Note 30)

Regline

VI = 14.8V to 30V, IO = 500mAVI = 16V to 22VTJ = 󰀀25qC

VI = 14.5V to 27VVI = 16V to 22V

Load Regulation (Note 30)

Regload

TJ = 󰀀25qC, IO = 5mA to 1.5mAIO = 5mA to 1mAIO = 250mA to 750mA

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1A

VI = 14V to 27V, IO = 500mAVI = 15V to 30V, TJ = 󰀀25qC

Output Voltage Drift (Note 31)Output Noise VoltageRipple Rejection (Note 31)Dropout Voltage

Output Resistance (Note 31)Short Circuit CurrentPeak Current (Note 31)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, IO = 500mA, VI = 14V to 24VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Conditions

Min11.7511.5––––––––––––––––––

Typ12.012.010.04.010.03.012.012.05.05.1–––󰀅1.010.060.02.018.02502.2

Max12.2512.512012012060.010010050.06.00.50.80.8–––––––

mV/qCPV/VOdBVm:mAAmAmAmVmVUnitsV

Note 30: 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 withlow duty is used.

Note 31: These parameters, although guaranteed, are not 100% tested in production.

13www.fairchildsemi.com

(Refer to the test circuits. 0qC 󰀅 TJ 󰀅 125qC, IO = 1A, VI = 23V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

IO = 5mA to 1A, PO d 15W, VI = 17.7V to 30V

Line Regulation(Note 32)

Regline

VI = 17.4V to 30V, IO = 500mAVI = 20V to 26VTJ = 󰀀25qC

VI = 17.5V to 30VVI = 20V to 26V

Load Regulation (Note 32)

Regload

TJ = 󰀀25qC, IO = 5mA to 1.5mAIO = 5mA to 1mAIO = 250mA to 750mA

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1A

VI = 17.5V to 30V, IO = 500mAVI = 17.5V to 30V, TJ = 󰀀25qC

Output Voltage Drift (Note 33)Output Noise VoltageRipple Rejection (Note 33)Dropout Voltage

Output Resistance (Note 33)Short Circuit CurrentPeak Current (Note 33)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qC

f = 120Hz, IO = 500mA, VI = 18.5V to 28.5VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Conditions

Min14.7514.4––––––––––––––––––

Typ15.015.010.05.011.03.012.012.05.05.2–––󰀅1.010.058.02.019.02502.2

Max15.315.615015015075.010010050.06.00.50.80.8–––––––

mV/qCPV/VOdBVm:mAAmAmAmVmVUnitsV

Note 32: 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 withlow duty is used.

Note 33: These parameters, although guaranteed, are not 100% tested in production.

www.fairchildsemi.com14

(Refer to the test circuits. 0qC 󰀅 TJ 󰀅 125qC, IO = 1A, VI = 27V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

IO = 5mA to 1A, PO d 15W, VI = 21V to 33V

Line Regulation(Note 34)

Regline

VI = 21V to 33V, IO = 500mAVI = 21V to 33VTJ = 󰀀25qC

VI = 20.6V to 33VVI = 24V to 30V

Load Regulation (Note 34)

Regload

TJ = 󰀀25qC, IO = 5mA to 1.5mAIO = 5mA to 1mAIO = 250mA to 750mA

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1A

VI = 12V to 33V, IO = 500mAVI = 12V to 33V, TJ = 󰀀25qC

Output Voltage Drift (Note 35)Output Noise VoltageRipple Rejection (Note 35)Dropout Voltage

Output Resistance (Note 35)Short Circuit CurrentPeak Current (Note 35)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, IO = 500mA, VI = 22V to 32VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Conditions

Min17.17.3––––––––––––––––––

Typ18.018.015.05.015.05.015.015.07.05.2–––󰀅1.010.057.02.019.02502.2

Max18.3618.718018018090.010010050.06.00.50.80.8–––––––

mV/qCPV/VOdBVm:mAAmAmAmVmVUnitsV

Note 34: 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 withlow duty is used.

Note 35: These parameters, although guaranteed, are not 100% tested in production.

15www.fairchildsemi.com

(Refer to the test circuits. 0qC 󰀅 TJ 󰀅 125qC, IO = 1A, VI = 33V, CI = 0.33PF, CO = 0.1PF, unless otherwise specified)

Parameter

Output Voltage

SymbolVO

TJ = 󰀀25qC

IO = 5mA to 1A, PO d 15W, VI = 27.3V to 38V

Line Regulation(Note 36)

Regline

VI = 27V to 38V, IO = 500mAVI = 21V to 33VTJ = 󰀀25qC

VI = 26.7V to 38VVI = 30V to 36V

Load Regulation (Note 36)

Regload

TJ = 󰀀25qC, IO = 5mA to 1.5mAIO = 5mA to 1mAIO = 250mA to 750mA

Quiescent CurrentQuiescent Current Change

IQ'IQ

TJ = 󰀀25qCIO = 5mA to 1A

VI = 27.3V to 38V, IO = 500mAVI = 27.3V to 38V, TJ = 󰀀25qC

Output Voltage Drift (Note 37)Output Noise VoltageRipple Rejection (Note 37)Dropout Voltage

Output Resistance (Note 37)Short Circuit CurrentPeak Current (Note 37)

'VO/'TVNRRVDROPrOISCIPK

IO = 5mA

f = 10Hz to 100KHz, TA = 󰀀25qCf = 120Hz, IO = 500mA, VI = 28V to 38VIO = 1A, TJ = 󰀀25qCf = 1KHz

VI = 35V, TA = 󰀀25qCTJ =󰀀25qC

Conditions

Min23.523.0––––––––––––––––––

Typ24.024.018.06.018.06.015.015.07.05.2–––󰀅1.510.054.02.020.02502.2

Max24.525.024024024012010010050.06.00.50.80.8–––––––

mV/qCPV/VOdBVm:mAAmAmAmVmVUnitsV

Note 36: 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 withlow duty is used.

Note 37: These parameters, although guaranteed, are not 100% tested in production.

www.fairchildsemi.com16

LM7805 • LM7806 • LM7808 • LM7809 • LM7810 • LM7812 • LM7815 • LM7818 • LM7824 • LM7805A • LM7806A • LM7808A•LM7809A • LM7810A • LM7812A • LM7815A • LM7818A • LM7824AFIGURE 2. Peak Output Current

FIGURE 4. Quiescent Current

Typical Performance Characteristics

FIGURE 1. Quiescent Current

FIGURE 3. Output Voltage

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LM7805 • LM7806 • LM7808 • LM7809 • LM7810 • LM7812 • LM7815 • LM7818 • LM7824 • LM7805A • LM7806A • LM7808A•LM7809A • LM7810A • LM7812A • LM7815A • LM7818A • LM7824ATypical Applications

www.fairchildsemi.com

FIGURE 5. DC Parameters

FIGURE 6. Load Regulation

FIGURE 7. Ripple Rejection

FIGURE 8. Fixed Output Regulator

FIGURE 9.

Note: To specify an output voltage, substitute voltage value for “XX”. A common ground is required between the Input and the Output voltage. The input voltage must remain typ-ically 2.0V above the output voltage even during the low point on the input ripple voltage.Note: CI is required if regulator is located an appreciable distance from the power supply filter.Note: CO improves stability and transient response.

IRI t 5 IQ

VO = VXX (1 R2 / R1) 󰀄 IQ R2

FIGURE 10. Circuit for Increasing Output Voltage

IRI t 5 IQ

VO = VXX (1 R2 / R1) 󰀄 IQ R2

FIGURE 11. Adjustable Output Regulator (7V to 30V)

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FIGURE 12. High Current Voltage Regulator

FIGURE 13. High Output Current with Short Circuit Protection

FIGURE 14. Tracking Voltage Regulator

www.fairchildsemi.com20

FIGURE 15. Split Power Supply (r15V - 1A)

FIGURE 16. Negative Output Voltage Circuit

FIGURE 17. Switching Regulator

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LM7805 • LM7806 • LM7808 • LM7809 • LM7810 • LM7812 • LM7815 • LM7818 • LM7824 • LM7805A • LM7806A • LM7808A•LM7809A • LM7810A • LM7812A • LM7815A • LM7818A • LM7824Awww.fairchildsemi.com

Physical Dimensions inches (millimeters) unless otherwise noted

Package Number TO-220

LM7805 • LM7806 • LM7808 • LM7809 • LM7810 • LM7812 • LM7815 • LM7818 • LM7824 • LM7805A • LM7806A • LM7808A•LM7809A • LM7810A • LM7812A • LM7815A • LM7818A • LM7824A 3-Terminal 1A Positive Voltage RegulatorDISCLAIMERFAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANYPRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITYARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES ITCONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICYFAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICESOR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATIONAs used herein:provided in the labeling, can be reasonably expected to

result in significant injury to the user.1. Life support devices or systems are devices or systems

which, (a) are intended for surgical implant into the body, or2. A critical component is any component of a life support(b) support or sustain life, or (c) whose failure to performdevice or system whose failure to perform can be reason-when properly used in accordance with instructions for useably expected to cause the failure of the life support device

or system, or to affect its safety or effectiveness.

PRODUCT STATUS DEFINITIONSDefinition of terms

Datasheet IdentificationProduct Status

Advance InformationPreliminary

Formative or InDesignFirst Production

Definition

This datasheet contains the design specifications for product develop-ment. Specifications may change in any manner without notice.This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design.This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design.

This datasheet contains specifications on a product that has been dis-continued by Fairchild Semiconductor. The datasheet is printed for ref-erence information only.

No Identification NeededFull Production

ObsoleteNot In Production

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