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TLH7781

LM140ALM

140LM340ALM340LM

7800CSeries3-Terminal

PositiveRegulators

January 1995

LM140ALM140LM340ALM340LM7800C

Series 3-Terminal Positive RegulatorsGeneral DescriptionThe LM140ALM140LM340ALM340LM7800C monolith-

ic 3-terminal positive voltage regulators employ internal cur-rent-limiting thermal shutdown and safe-area compensa-

tion making them essentially indestructible If adequateheat sinking is provided they can deliver over 10A outputcurrent They are intended as fixed voltage regulators in a

wide range of applications including local (on-card) regula-tion for elimination of noise and distribution problems asso-

ciated with single-point regulation In addition to use as fixedvoltage regulators these devices can be used with externalcomponents to obtain adjustable output voltages and cur-

rents

Considerable effort was expended to make the entire seriesof regulators easy to use and minimize the number of exter-

nal components It is not necessary to bypass the outputalthough this does improve transient response Input by-passing is needed only if the regulator is located far from

the filter capacitor of the power supply

The 5V 12V and 15V regulator options are available in thesteel TO-3 power package The LM340ALM340LM7800C

series is available in the TO-220 plastic power package andthe LM7805 and LM7812 are also available in the surface-mount TO-263 package

FeaturesY Complete specifications at 1A loadY Output voltage tolerances of g2% at Tj e 25C andg4% over the temperature range (LM140ALM340A)

Y Line regulation of 001% of VOUTV of DVIN at 1A load(LM140ALM340A)

Y Load regulation of 03% of VOUTA (LM140ALM340A)Y Internal thermal overload protectionY Internal short-circuit current limitY Output transistor safe area protectionY Pa Product Enhancement tested

Device Out put Volt ages P ackages

LM140ALM140 5 12 15 TO-3 (K)

LM340ALM340 5 12 15 TO-3 (K) TO-220 (T)

LM7800C 5 6 8 12 15 TO-220 (T) TO-263 (S)

18 24 (5V and 12V only)

Typical Applications

Fixed Output Regulator

TLH77811

Required if the regulator is located far from the

power supply filter

Although no output capacitor is needed for sta-

bility it does help transient response (If need-

ed use 01 mF ceramic disc)

Adjustable Output Regulator

TLH77812

VOUT e 5V a (5VR1 a IQ) R2 5VR1 l 3 I Q

load regulation (Lr) (R1 a R2)R1 (Lr of

LM340-5)

Current Regulator

TLH77813

IOUT eV2-3

R1a IQ

DIQ e 13 mA over line and load changes

C1995 National Semiconductor Corporation RRD-B30M115Printed in U S A

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Absolute Maximum Ratings (Note 1)If MilitaryAerospace specified devices are requiredplease contact the National Semiconductor SalesOfficeDistributors for availability and specifications

(Note 5)

DC Input VoltageA ll De vi ce s e xce pt L M7 82 4 LM7 82 4C 3 5V

LM7824LM7824C 40VInternal Power Dissipation (Note 2) Internally Limited

Maximum Junction Temperature 150C

Storage Temperature Range b65C to a150C

Lead Temperature (Soldering 10 sec)TO-3 Package (K) 300CTO-220 Package (T) TO-263 Package (S) 230C

ESD Susceptibility (Note 3) 2 kV

Operating Conditions (Note 1)Temperature Range (TA) (Note 2)

LM140A LM140 b55C to a125CLM340A LM340 LM7805C

LM7812C LM7815C 0C to a70CLM7806C LM7808C LM7818CLM7824C 0C to a125C

LM140ALM340A

Electrical CharacteristicsIOUT e 1A b55C s TJ s a150C (LM140A) or 0C s TJ s a 125C (LM340A) unless otherwise specified (Note 4)

Output Voltage 5V 12V 15V

Symbol Input Voltage (unless otherwise noted) 10V 19V 23V Units

Parameter Conditions Min Typ Max Min Typ Max Min Typ Max

VO Output Voltage TJ e 25C 49 5 51 1175 12 1225 147 15 153 V

PD s 15W 5 mA s IO s 1A 48 52 115 125 144 156 VVMIN s VIN s VMAX (75 s VIN s 20) (148 s VIN s 27) (179s VIN s 30) V

DVO L in e Regu la ti on IO e 500 mA 10 18 22 mV

DVIN (75 s VIN s 20) (148 s VIN s 27) (179s VIN s 30) V

TJ e 25C 3 10 4 18 4 22 mVDVIN (75 s VIN s 20) (145 s VIN s 27) (175s VIN s 30) V

TJ e 25C 4 9 10 mVOver Temperature 12 30 30 mV

DVIN (8 s VIN s 12) (16 s VIN s 22) (20 s VIN s 26) V

DVO Load Regulation TJ e 25C 5 mA s IO s 15A 10 25 12 32 12 35 mV250 mAs IO s 750 mA 15 19 21 mV

Over Temperature25 60 75 mV

5 mA s IO s 1A

IQ

Quiescent Current TJe 25

C 6 6 6 mA

Over Temperature 65 65 65 mA

DIQ Quiescent Current 5 mAs IO s 1A 05 05 05 mAChange TJ e 25C IO e 1A 08 08 08 mA

VMIN s VIN s VMAX (75 s VIN s 20) (148 s VIN s 27) (179s VIN s 30) V

IO e 500 mA 08 08 08 mA

VMIN s VIN s VMAX (8 s VIN s 25) (15 s VIN s 30) (179 s VIN s 30) V

VN Output Noise Voltage TA e 25C 10 Hz s f s 100 kHz 40 75 90 mV

DVIN

DVOUT

Ripple Rejection TJ e 25C f e 120 Hz IO e 1A 68 80 61 72 60 70 dBor f e 120 Hz IO e 500 mA 68 61 60 dB

Over TemperatureVMIN s VIN s VMAX (8 s VIN s 18) (15 s VIN s 25) (185s VIN s 285) V

RO Dropout Voltage TJ e 25C IO e 1A 20 20 20 VOutput Resistance f e 1 kHz 8 18 19 mXShort-Circuit Current TJ e 25C 21 15 12 APeak Output Current TJ e 25C 24 24 24 A

Average TC of VO Min TJ e 0C IO e 5 mA b06 b15 b18 mVCVIN Input Voltage TJ e 25C

Required to Maintain 75 145 175 VLine Regulation

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LM140

Electrical Characteristics (Note 4)b55C s TJ s a150C unless otherwise specified




VO O ut pu t Vo ltage TJ e 25C 5 mA s IO s 1A 48 5 52 115 12 125 144 15 156 V

PD s 15W 5 mA s IO s 1A 475 525 114 126 1425 1575 V

VMIN s VIN s VMAX (8s VIN s 20) (155 s VIN s 2 7) (1 8 5s VIN s 30) V

DVO Line Regulat ion IO e 500 mA TJ e 25C 3 50 4 120 4 150 mVDVIN (7s VIN s 25) (145 s VIN s 3 0) (1 7 5s VIN s 30) V

b55C s TJ s a150C 50 120 150 mVDVIN (8s VIN s 20) (15 s VIN s 27) (185 s VIN s 30) V

IO s 1A TJ e 25C 50 120 150 mVDVIN (75s VIN s 20) (146 s VIN s 2 7) (1 7 7s VIN s 30) V

b55C s TJ s a150C 25 60 75 mVDVIN (8s VIN s 12) (16 s VIN s 22) (20 s VIN s 26) V

DVO Load Regulat ion TJ e 25C 5 mA s IO s 15A 10 50 12 120 12 150 mV250 mA s IP s 750 mA 25 60 75 mV

b55C s TJ s a150C 50 120 150 mV5 mA s IO s 1A

IQ Quiescent Current IO s 1A TJ e 25C 6 6 6 mAb55C s TJ s a150C 7 7 7 mA

DIQ Quiescent Current 5 mAs IO s 1A 05 05 05 mA

Change TJ e 25C IO s 1A 08 08 08 mAVMIN s VIN s VMAX (8s VIN s 20) (15 s VIN s 27) (185 s VIN s 30) V

IO e 500 mA b55C s TJ s a150C 08 08 08 mAVMIN s VIN s VMAX (8s VIN s 25) (15 s VIN s 30) (185 s VIN s 30) V


DVIN

DVOUT

Ripple Rejection IO s 1A TJ e 25C or 68 80 61 72 60 70 dBf e 120 Hz IO s 500 mA 68 61 60 dBb55C s TJ sa150CVMIN s VIN s VMAX (8s VIN s 18) (15 s VIN s 25 ) (1 85 s VIN s 285) V

RO Dropout Voltage TJ e 25C IO e 1A 20 20 20 VOutput Resistance f e 1 kHz 8 18 19 mX

Short-Circuit Current TJ e 25C 21 15 12 APeak Output Current TJ e 25C 24 24 24 AAverage TC of VOUT 0C s TJ s a150C IO e 5 mA b06 b15 b18 mVC

VIN Input Voltage TJ e 25C IO s 1ARequired to Maintain 75 146 177 V

Line Regulation

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LM340LM7800C

Electrical Characteristics (Note 4) 0C s TJ s a125C unless otherwise specified




VO Ou tpu t Vol tage TJ e 25C 5 mA s IO s 1A 48 5 52 115 12 125 144 15 156 V

PD s 15W 5 mA s IO s 1A 475 525 114 126 1425 1575 V

VMIN s VIN s VMAX (75s VIN s 20) (145 s VIN s 27) (175 s VIN s 30) V

DVO Line Regulat ion IO e 500 mA TJ e 25C 3 50 4 120 4 150 mVDVIN (7s VIN s 25) (145 s VIN s 30) (175 s VIN s 30) V

0C s TJ s a125C 50 120 150 mVDVIN (8s VIN s 20) (15 s VIN s 27) (185 s VIN s 30) V

IO s 1A TJ e 25C 50 120 150 mVDVIN (75s VIN s 20) (146 s VIN s 27) (177 s VIN s 30) V

0C s TJ s a125C 25 60 75 mVDVIN (8s VIN s 12) (16 s VIN s 22) (20 s VIN s 26) V

DVO Load Regulat ion TJ e 25C 5 mA s IO s 15A 10 50 12 120 12 150 mV250 mA s IO s 750 mA 25 60 75 mV

5 mA s IO s 1A 0C s TJ s a125C 50 120 150 mV

IQ

Quiescent Current IO

s 1A TJ

e 25C 8 8 8 mA

0C s TJ s a125C 85 85 85 mA

DIQ Quiescent Current 5 mAs IO s 1A 05 05 05 mA

ChangeTJ e 25C IO s 1A 10 10 10 mAVMIN s VIN s VMAX (75s VIN s 20) (148 s VIN s 27) (179 s VIN s 30) V

IO s 500 mA 0C s TJ s a125C 10 10 10 mAVMIN s VIN s VMAX (7s VIN s 25) (145 s VIN s 30) (175 s VIN s 30) V


DVIN

DVOUT

Ripple Rejection IO s 1A TJ e 25C 62 80 55 72 54 70 dBf e 120 Hz or IO s 500 mA 62 55 54 dB0C s TJ s a125CVMIN s VIN s VMAX (8s VIN s 18) (15 s VIN s 25) (185 s VIN s 285) V

RO Dropout Voltage TJ e 25C IO e 1A 20 20 20 VOutput Resistance f e 1 kHz 8 18 19 mX

Short-Circuit Current TJ e 25C 21 15 12 APeak Output Current TJ e 25C 24 24 24 A

Average TC of VOUT 0C s TJ s a125C IO e 5 mA b06 b15 b18 mVC

VIN Input Voltage TJ e 25C IO s 1ARequired to Maintain 75 146 177 V

Line Regulation

Note 1 Absolute Maximum Ratings are limits beyond which damage to the device may occur Operating Conditions are conditions under which the device

functions but the specifications might not be guaranteed For guaranteed specifications and test conditions see the Electrical Characteristics

Note 2 The maximum allowable power dissipation at any ambient temperature is a function of the maximum junction temperature for operation (TJMAX e 125C or150C) the junction-to-ambient thermal resistance (iJA) and the ambient temperature (TA) P DMAX e (TJMAX b TA)iJA If this dissipation is exceeded the dietemperature will rise above TJMAX and the electrical specifications do not apply If the die temperature rises above 150C the device will go into thermal shutdownFor the TO-3 package (K KC) the junction-to-ambient thermal resistance (iJA) is 39CW When using a heatsink iJA is the sum of the 4CW junction-to-casethermal resistance (iJC) of the TO-3 package and the case-to-ambient thermal resistance of the heatsink For the TO-220 package (T) iJA is 54CW and iJC is4CW

If the TO-263 package is used the thermal resistance can be reduced by increasing the PC board copper area thermally connected to the package Using 05

square inches of copper area iJA is 50CW with 1 square inch of copper area iJA is 37GW and with 16 or more inches of copper area iJA is 32CW

Note 3 ESD rating is based on the human body model 100 pF discharged through 15 kX

Note 4 All characteristics are measured with a 022 mF capacitor from input to ground and a 01 mF capacitor from output to ground All characteristics except

noise voltage and ripple rejection ratio are measured using pulse techniques (tw s 10 ms duty cycle s 5%) Output voltage changes due to changes in internal

temperature must be taken into account separately

Note 5 A military RETS specification is available on request At the time of printing the military RETS specifications for the LM140AK-50883 LM140AK-12883

and LM140AK-15883 complied with the min and max limits for the respective versions of the LM140A At the time of printing the military RETS specifications for

the LM140K-50883 LM140K-12883 and LM140K-15883 complied with the min and max limits for the respective versions of the LM140 The LM140H883

LM140K883 and LM140AK883 may also be procured as a Standard Military Drawing

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LM7806CElectrical Characteristics0C s TJ s a150C VI e 11V IO e 500 mA CI e 033 mF CO e 01 mF unless otherwise specified

Symbol Parameter Conditions (Note 4) Min Typ Max Units

VO Output Voltage TJ e 25C 575 60 625 V

DVO Line Regulation TJ e 25C 80V s VI s 25V 50 120mV

90Vs VI s 13V 15 60

DVO Load Regulation TJ e 25C 50 mA s IO s 15A 14 120mV

250 mA s IO s 750 mA 40 60

VO Output Voltage 80V s VI s 21V 50 mA s IO s 10A Ps 15W 57 63 V

IQ Quiescent Current TJ e 25C 43 80 mA

DIQ Quiescent Current With Line 80Vs VI s 25V 13mA

Change With Load 50 mAs IO s 10A 05

VN Noise TA e 25C 10 Hz s f s 100 kHz 45 mV

DVIDVO Ripple Rejection f e 120 Hz IO e 350 mA TJ e 25C 59 75 dB

VDO Dropout Voltage IO e 10A TJ e 25C 20 V

RO Output Resistance f e 10 kHz 9 mX

IOS Output Short Circuit Current TJ e 25C VI e 35V 550 mA

IPK Peak Output Current TJe

25C 22 ADVODT Average Temperature IO e 50 mA 0C s TA s a125C

08 mVCCoefficient of Output Voltage


Symbol Parameter Conditions (Note 4)LM7808C

UnitsMin Typ Max



110Vs VI s 17V 20 80


250 mAs

IOs

750 mA 40 80VO Output Voltage 115Vs VI s 23V 50 mA s IO s 10A Ps 15W 76 84 V


DIQ Quiescent With Line 115Vs VI s 25V 10mA

Current Change With Load 50 mAs IO s 10A 05





IOS Output Short Circuit Current TJ e 25C VI e 35V 045 A

IPK Peak Output Current TJ e 25C 22 A

DVODT Average Temperature IO e 50 mA 08 mVCCoefficient of Output Voltage

Note 4 All characteristics are measured with a 022mF capacitor from input to ground and a 01 mF capacitor from output to ground All characteristics except

noise voltage and ripple rejection ratio are measured using pulse techniques (tws

10 ms duty cycles

5%) Output voltage changes due to changes in internaltemperature must be taken into account separately

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UnitsMin Typ Max


DVO Line Regulation TJ e 25C 21V s VI s 33V 15 360 mV24V s VI s 30V 50 180


250 mA s IO s 750 mA 40 180

VO Output Voltage 22Vs VI s 33V 50 mA s IO s 10A Ps 15W 171 189 V









IPK

Peak Output Current TJ

e 25C 21 A




UnitsMin Typ Max



30V s VI s 36V 60 240


250 mA s IO s 750 mA 40 240

VO

Output Voltage 28Vs VI

s 38V 50 mA s IO

s 10A P s 15W 228 252 V









IPK Peak Output Current TJ e 25C 21 A


Note 4 All characteristics are measured with a 022 mF capacitor from input to ground and a 01 mF capacitor from output to ground All characteristics except

noise voltage and ripple rejection ratio are measured using pulse techniques (tw s 10 ms duty cycle s 5%) Output voltage changes due to changes in internal

temperature must be taken into account separately

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Typical Performance Characteristics

Dissipation

Maximum Average Power

Dissipation

Maximum Average Power

(See Note 2)

Dissipation (TO-263)Maximum Power

to 1V at Tj e 25C)Output Voltage (Normalized

Ripple Rejection Ripple Rejection

Output Impedance Dropout Characteristics Quiescent Current

Peak Output Current Dropout Voltage Quiescent Current

Note Shaded area refers to LM340ALM340

LM7805C LM7812C and LM7815C

Note Shaded area refers to LM340ALM340

LM7805C LM7812C and LM7815C

Note Shaded area refers to LM340ALM340 TLH77814LM7805C LM7812C and LM7815C

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Typical Performance Characteristics (Continued)

Load Regulation140AK-50 VIN e 10V TA e 25C

TLH77815

Line Regulation140AK-50 IOUTe 1A TA e 25C

TLH77816

Equivalent Schematic

TLH77817

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Application HintsThe LM340LM78XX series is designed with thermal pro-

tection output short-circuit protection and output transistorsafe area protection However as with any IC regulator it

becomes necessary to take precautions to assure that theregulator is not inadvertently damaged The following de-scribes possible misapplications and methods to prevent

damage to the regulator

Shorting the Regulator Input When using large capaci-tors at the output of these regulators a protection diode

connected input to output (Figure 1) may be required if theinput is shorted to ground Without the protection diode aninput short will cause the input to rapidly approach ground

potential while the output remains near the initial VOUT be-cause of the stored charge in the large output capacitor

The capacitor will then discharge through a large internalinput to output diode and parasitic transistors If the energyreleased by the capacitor is large enough this diode low

current metal and the regulator will be destroyed The fastdiode in Figure 1 will shunt most of the capacitors discharge

current around the regulator Generally no protection diodeis required for values of output capacitance s 10 mF

Raising the Output Voltage above the Input VoltageSince the output of the device does not sink current forcingthe output high can cause damage to internal low current

paths in a manner similar to that just described in theShorting the Regulator Input section

Regulator Floating Ground (Figure 2) When the ground

pin alone becomes disconnected the output approachesthe unregulated input causing possible damage to other cir-cuits connected to VOUT If ground is reconnected with pow-

er ON damage may also occur to the regulator This faultis most likely to occur when plugging in regulators or mod-ules with on card regulators into powered up sockets Power

should be turned off first thermal limit ceases operating orground should be connected first if power must be left on

Transient Voltages If transients exceed the maximum rat-

ed input voltage of the device or reach more than 08Vbelow ground and have sufficient energy they will damage

the regulator The solution is to use a large input capacitora series input breakdown diode a choke a transient sup-pressor or a combination of these

TLH77818

FIGURE 1 Input Short

TLH77819

FIGURE 2 Regulator Floating Ground

TLH778110

FIGURE 3 Transients

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Typical Applications

Fixed Output Regulator

TLH778113

Note 1 Bypass capacitors are recommended for optimum stability and tran-

sient response and should be located as close as possible to the regulator

High Input Voltage Circuits

TLH778114

TLH778115

High Current Voltage Regulator

b(Q1) tIO Max

IREG Max

R1 e09

IREGe

b(Q1) VBE(Q1)

IREG Max (b a 1)b IO MaxTLH778116

High Output Current Short Circuit Protected

RSCe08

ISC

R1 ebVBE(Q1)

IREG Max (b a 1)b IO Max

TLH778117

Positive and Negative Regulator

TLH778118

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Connection Diagrams and Ordering Information

TO-3 Metal Can Package (K)

TLH778111

Bottom View

Steel Package Order NumbersLM140K-50 LM140K-12 LM140K-15

LM340AK- 50 LM340K- 12 LM340K- 15LM340K-50

See Package Number K02A

LM140AK-50883 LM140AK-12883 LM140AK-15883

LM140K-50883 LM140K-12883 LM140K-15883See Package Number K02C

TO-220 Power Package (T)

TLH778112

Top View

Plastic Package Order NumbersLM340AT-50 LM340T-50

LM340AT-12 LM340T-12LM340AT-15 LM340T-15LM7805CT LM7812CT

LM7815CT LM7806CTLM7808CT LM7818CT

LM7824CT

See Package Number T03B

TO-39 Metal Can Package (H)

TLH778119

Top View

Metal Can Order Numbers

LM140H-50883 LM140H-60883LM140H-80883 LM140H-12883LM140H-15883 LM140H-24883

See Package Number H03A

TO-263 Surface-Mount Package (S)

TLH778120

Top View

TLH778121

Side View

Surface-Mount Package Order NumbersLM7805S LM7812S

See Package Number TS3B

The specifications for the LM140H883 devices are not contained in this datasheet If specifications for these devicesare required contact the National Semiconductor Sales OfficeDistributors

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Physical Dimensions inches (millimeters)


Order Number LM340AK-50 LM140K-50 LM340K-50 LM140K-12 LM340K-12LM140K-15 LM340K-15 LM7806CK LM7808CK LM7818CK or LM7824CK

NS Package Number K02A

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Physical Dimensions inches (millimeters) (Continued)


Mil-Aero ProductsOrder Number LM140AK-50883 LM140K-50883 LM140AK-12883

LM140K-12883 LM140AK-15883 or LM140K-15883

NS Package Number K02C

TO-263 Surface-Mount Package (S)

Order Number LM7805S or LM7812SNS Package Number TS3B

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LM140ALM140LM340ALM340LM7800C

Series3-TerminalPositiv

eRegulators

Physical Dimensions inches (millimeters) (Continued)

TO-220 Power Package (T)Order Number LM340ATLM340T-50 LM340ATLM340T-12 LM340ATLM340T-15

LM7805CT LM7812CT LM7815CT LM7806CT LM7808CT LM7818CT or LM7824CTNS Package Number T03B

LIFE SUPPORT POLICY

NATIONALS PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONALSEMICONDUCTOR CORPORATION As used herein

1 Life support devices or systems are devices or 2 A critical component is any component of a lifesystems which (a) are intended for surgical implant support device or system whose failure to perform can

into the body or (b) support or sustain life and whose be reasonably expected to cause the failure of the lifefailure to perform when properly used in accordance support device or system or to affect its safety or

with instructions for use provided in the labeling can effectivenessbe reasonably expected to result in a significant injuryto the user

National Semiconducto r National Semiconduct or Natio nal Semiconducto r National Semiconduct or

Corporation Europe Hong Kong Ltd Japan Ltd1111 West Bardin Road Fax (a4 9) 0 -1 80 -5 30 8 5 8 6 1 3t h F lo or S tr ai gh t B lo ck T el 8 1- 04 3- 29 9- 23 09Arlington TX 76017 Email cnjwget ev m2 n sc c om O ce an C en tr e 5 C an to n R d F ax 8 1- 04 3- 29 9- 24 08Tel 1(800) 272-9959 Deutsch Tel (a49) 0-180-530 85 85 Tsimshatsui KowloonFax 1(800) 737-7018 Eng lish Tel (a49 ) 0- 180 -53 2 7 8 32 Ho ng K ong

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