LM7812CT - National Semiconductor

LM340/LM78MXX Series

3-Terminal Positive Regulators

General Description

The LM140/LM340A/LM340/LM7800C monolithic 3-terminal

positive voltage regulators employ internal current-limiting,

thermal shutdown and safe-area compensation, making

them essentially indestructible. If adequate heat sinking is

provided, they can deliver over 1.0Aoutput current. They are

intended as fixed voltage regulators in a wide range of appli-

cations including local (on-card) regulation for elimination of

noise and distribution problems associated with single-point

regulation. In addition to use as fixed voltage regulators,

these devices can be used with external components to ob-

tain adjustable output voltages and currents.

Considerable effort was expended to make the entire series

of regulators easy to use and minimize the number of exter-

nal components. It is not necessary to bypass the output, al-

though this does improve transient response. Input bypass-

ing 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 the

steel TO-3 power package. The LM340A/LM340/LM7800C

series is available in the TO-220 plastic power package, and

the LM340-5.0 is available in the SOT-223 package, as well

as the LM340-5.0 and LM340-12 in the surface-mount

TO-263 package.

Features

nComplete specifications at 1A load

nOutput voltage tolerances of ±2% at T

= 25˚C and ±4%

over the temperature range (LM340A)

nLine regulation of 0.01% of V

OUT

/V of ∆V

at 1A load

(LM340A)

nLoad regulation of 0.3% of V

OUT

/A (LM340A)

nInternal thermal overload protection

nInternal short-circuit current limit

nOutput transistor safe area protection

Product Enhancement tested

Device Output

Voltages Packages

LM140 5, 12,

15 TO-3 (K)

LM340A/LM340 5, 12,

15 TO-3 (K), TO-220 (T),

SOT-223 (MP), TO-263 (S)

(5V and 12V only)

LM7800C 5, 8, 12,

15 TO-220 (T)

Typical Applications

Fixed Output Regulator

DS007781-1

*Required if the regulator is located far from the power supply filter.

**Although no output capacitor is needed for stability, it does help transient

response. (If needed, use 0.1 µF, ceramic disc).

Adjustable Output Regulator

DS007781-2

VOUT = 5V + (5V/R1 + IQ) R2 5V/R1 >3I

load regulation (Lr)≈[(R1 + R2)/R1] (Lrof LM340-5).

Current Regulator

DS007781-3

∆IQ= 1.3 mA over line and load changes.

Comparison between SOT-223 and D-Pak (TO-252)

Packages

DS007781-38

Scale 1:1

February 2000

LM340/LM78MXX Series 3-Terminal Positive Regulators

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

(Note 5)

DC Input Voltage

All Devices except

LM7824/LM7824C 35V

LM7824/LM7824C 40V

Internal Power Dissipation (Note 2) Internally Limited

Maximum Junction Temperature 150˚C

Storage Temperature Range −65˚C to +150˚C

Lead Temperature (Soldering, 10 sec.)

TO-3 Package (K) 300˚C

TO-220 Package (T), TO-263

Package (S) 230˚C

ESD Susceptibility (Note 3) 2 kV

Operating Conditions (Note 1)

Temperature Range (T

) (Note 2)

LM140A, LM140 −55˚C to +125˚C

LM340A, LM340, LM7805C,

LM7812C, LM7815C, LM7808C 0˚C to +125˚C

LM340A

Electrical Characteristics

OUT

= 1A, −55˚C ≤T

≤+150˚C (LM140A), or 0˚C ≤T

≤+ 125˚C (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

VOOutput Voltage TJ= 25˚C 4.9 5 5.1 11.75 12 12.25 14.7 15 15.3 V

PD≤15W, 5 mA ≤IO≤1A 4.8 5.2 11.5 12.5 14.4 15.6 V

VMIN ≤VIN ≤VMAX (7.5 ≤VIN ≤20) (14.8 ≤VIN ≤27) (17.9 ≤VIN ≤30) V

∆VOLine Regulation IO= 500 mA 10 18 22 mV

∆VIN (7.5 ≤VIN ≤20) (14.8 ≤VIN ≤27) (17.9 ≤VIN ≤30) V

TJ= 25˚C 3 10 4 18 4 22 mV

∆VIN (7.5 ≤VIN ≤20) (14.5 ≤VIN ≤27) (17.5 ≤VIN ≤30) V

TJ= 25˚C 4 9 10 mV

Over Temperature 12 30 30 mV

∆VIN (8 ≤VIN ≤12) (16 ≤VIN ≤22) (20 ≤VIN ≤26) V

∆VOLoad Regulation TJ= 25˚C 5 mA ≤IO≤1.5A 10 25 12 32 12 35 mV

250 mA ≤IO≤750 mA 15 19 21 mV

Over Temperature, 25 60 75 mV

5mA≤I

O≤1A

IQQuiescent Current TJ= 25˚C 6 6 6 mA

Over Temperature 6.5 6.5 6.5 mA

∆IQQuiescent Current 5 mA ≤IO≤1A 0.5 0.5 0.5 mA

Change TJ= 25˚C, IO= 1A 0.8 0.8 0.8 mA

VMIN ≤VIN ≤VMAX (7.5 ≤VIN ≤20) (14.8 ≤VIN ≤27) (17.9 ≤VIN ≤30) V

IO= 500 mA 0.8 0.8 0.8 mA

VMIN ≤VIN ≤VMAX (8 ≤VIN ≤25) (15 ≤VIN ≤30) (17.9 ≤VIN ≤30) V

VNOutput Noise Voltage TA= 25˚C, 10 Hz ≤f≤100 kHz 40 75 90 µV

Ripple Rejection TJ= 25˚C, f = 120 Hz, IO=1A 68 80 61 72 60 70 dB

or f = 120 Hz, IO= 500 mA, 68 61 60 dB

Over Temperature,

VMIN ≤VIN ≤VMAX (8 ≤VIN ≤18) (15 ≤VIN ≤25) (18.5 ≤VIN ≤28.5) V

RODropout Voltage TJ= 25˚C, IO= 1A 2.0 2.0 2.0 V

Output Resistance f = 1 kHz 8 18 19 mΩ

Short-Circuit Current TJ= 25˚C 2.1 1.5 1.2 A

Peak Output Current TJ= 25˚C 2.4 2.4 2.4 A

Average TC of VOMin, TJ= 0˚C, IO= 5 mA −0.6 −1.5 −1.8 mV/˚C

VIN Input Voltage TJ= 25˚C

Required to Maintain 7.5 14.5 17.5 V

Line Regulation

LM340/LM78MXX

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LM140

Electrical Characteristics (Note 4)

−55˚C ≤T

≤+150˚C unless otherwise specified

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

VOOutput Voltage TJ= 25˚C, 5 mA ≤IO≤1A 4.8 5 5.2 11.5 12 12.5 14.4 15 15.6 V

PD≤15W, 5 mA ≤IO≤1A 4.75 5.25 11.4 12.6 14.25 15.75 V

VMIN ≤VIN ≤VMAX (8 ≤VIN ≤20) (15.5 ≤VIN ≤27) (18.5 ≤VIN ≤30) V

∆VOLine Regulation IO= 500 mA TJ= 25˚C 3 50 4 120 4 150 mV

∆VIN (7 ≤VIN ≤25) (14.5 ≤VIN ≤30) (17.5 ≤VIN ≤30) V

−55˚C ≤TJ≤+150˚C 50 120 150 mV

∆VIN (8 ≤VIN ≤20) (15 ≤VIN ≤27) (18.5 ≤VIN ≤30) V

IO≤1A TJ= 25˚C 50 120 150 mV

∆VIN (7.5 ≤VIN ≤20) (14.6 ≤VIN ≤27) (17.7 ≤VIN ≤30) V

−55˚C ≤TJ≤+150˚C 25 60 75 mV

∆VIN (8 ≤VIN ≤12) (16 ≤VIN ≤22) (20 ≤VIN ≤26) V

∆VOLoad Regulation TJ= 25˚C 5 mA ≤IO≤1.5A 10 50 12 120 12 150 mV

250 mA ≤IP≤750 mA 25 60 75 mV

−55˚C ≤TJ≤+150˚C, 50 120 150 mV

5mA≤I

O≤1A

IQQuiescent Current IO≤1A TJ= 25˚C 6 6 6 mA

−55˚C ≤TJ≤+150˚C 7 7 7 mA

∆IQQuiescent Current 5 mA ≤IO≤1A 0.5 0.5 0.5 mA

Change TJ= 25˚C, IO≤1A 0.8 0.8 0.8 mA

VMIN ≤VIN ≤VMAX (8 ≤VIN ≤20) (15 ≤VIN ≤27) (18.5 ≤VIN ≤30) V

IO= 500 mA, −55˚C ≤TJ≤+150˚C 0.8 0.8 0.8 mA

VMIN ≤VIN ≤VMAX (8 ≤VIN ≤25) (15 ≤VIN ≤30) (18.5 ≤VIN ≤30) V

VNOutput Noise Voltage TA= 25˚C, 10 Hz ≤f≤100 kHz 40 75 90 µV

Ripple Rejection IO≤1A, TJ= 25˚C or 68 80 61 72 60 70 dB

f = 120 Hz IO≤500 mA, 68 61 60 dB

−55˚C ≤TJ≤+150˚C

VMIN ≤VIN ≤VMAX (8 ≤VIN ≤18) (15 ≤VIN ≤25) (18.5 ≤VIN ≤28.5) V

RODropout Voltage TJ= 25˚C, IO= 1A 2.0 2.0 2.0 V

Output Resistance f = 1 kHz 8 18 19 mΩ

Short-Circuit Current TJ= 25˚C 2.1 1.5 1.2 A

Peak Output Current TJ= 25˚C 2.4 2.4 2.4 A

Average TC of VOUT 0˚C ≤TJ≤+150˚C, IO= 5 mA −0.6 −1.5 −1.8 mV/˚C

VIN Input Voltage TJ= 25˚C, IO≤1A

Required to Maintain 7.5 14.6 17.7 V

Line Regulation

LM340/LM78MXX

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LM340/LM7800C

Electrical Characteristics (Note 4)

0˚C ≤T

≤+125˚C unless otherwise specified

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

VOOutput Voltage TJ= 25˚C, 5 mA ≤IO≤1A 4.8 5 5.2 11.5 12 12.5 14.4 15 15.6 V

PD≤15W, 5 mA ≤IO≤1A 4.75 5.25 11.4 12.6 14.25 15.75 V

VMIN ≤VIN ≤VMAX (7.5 ≤VIN ≤20) (14.5 ≤VIN ≤27) (17.5 ≤VIN ≤30) V

∆VOLine Regulation IO= 500 mA TJ= 25˚C 3 50 4 120 4 150 mV

∆VIN (7 ≤VIN ≤25) (14.5 ≤VIN ≤30) (17.5 ≤VIN ≤30) V

0˚C ≤TJ≤+125˚C 50 120 150 mV

∆VIN (8 ≤VIN ≤20) (15 ≤VIN ≤27) (18.5 ≤VIN ≤30) V

IO≤1A TJ= 25˚C 50 120 150 mV

∆VIN (7.5 ≤VIN ≤20) (14.6 ≤VIN ≤27) (17.7 ≤VIN ≤30) V

0˚C ≤TJ≤+125˚C 25 60 75 mV

∆VIN (8 ≤VIN ≤12) (16 ≤VIN ≤22) (20 ≤VIN ≤26) V

∆VOLoad Regulation TJ= 25˚C 5 mA ≤IO≤1.5A 10 50 12 120 12 150 mV

250 mA ≤IO≤750 mA 25 60 75 mV

5mA≤I

O≤1A, 0˚C ≤TJ≤+125˚C 50 120 150 mV

IQQuiescent Current IO≤1A TJ= 25˚C 8 8 8 mA

0˚C ≤TJ≤+125˚C 8.5 8.5 8.5 mA

∆IQQuiescent Current 5 mA ≤IO≤1A 0.5 0.5 0.5 mA

Change TJ= 25˚C, IO≤1A 1.0 1.0 1.0 mA

VMIN ≤VIN ≤VMAX (7.5 ≤VIN ≤20) (14.8 ≤VIN ≤27) (17.9 ≤VIN ≤30) V

IO≤500 mA, 0˚C ≤TJ≤+125˚C 1.0 1.0 1.0 mA

VMIN ≤VIN ≤VMAX (7 ≤VIN ≤25) (14.5 ≤VIN ≤30) (17.5 ≤VIN ≤30) V

VNOutput Noise Voltage TA= 25˚C, 10 Hz ≤f≤100 kHz 40 75 90 µV

Ripple Rejection IO≤1A, TJ= 25˚C 62 80 55 72 54 70 dB

f = 120 Hz or IO≤500 mA, 62 55 54 dB

0˚C ≤TJ≤+125˚C

VMIN ≤VIN ≤VMAX (8 ≤VIN ≤18) (15 ≤VIN ≤25) (18.5 ≤VIN ≤

28.5) V

RODropout Voltage TJ= 25˚C, IO= 1A 2.0 2.0 2.0 V

Output Resistance f = 1 kHz 8 18 19 mΩ

Short-Circuit Current TJ= 25˚C 2.1 1.5 1.2 A

Peak Output Current TJ= 25˚C 2.4 2.4 2.4 A

Average TC of VOUT 0˚C ≤TJ≤+125˚C, IO= 5 mA −0.6 −1.5 −1.8 mV/˚C

VIN Input Voltage TJ= 25˚C, IO≤1A

Required to Maintain 7.5 14.6 17.7 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 = 125˚C or

150˚C), the junction-to-ambient thermal resistance (θJA), and the ambient temperature (TA). PDMAX =(T

JMAX −T

)/θJA. If this dissipation is exceeded, the die tem-

perature will rise above TJMAX and the electrical specifications do not apply. If the die temperature rises above 150˚C, the device will go into thermal shutdown. For

the TO-3 package (K, KC), the junction-to-ambient thermal resistance (θJA) is 39˚C/W. When using a heatsink, θJA is the sum of the 4˚C/W junction-to-case thermal

resistance (θJC) of the TO-3 package and the case-to-ambient thermal resistance of the heatsink. For the TO-220 package (T), θJA is 54˚C/W and θJC is 4˚C/W. If

SOT-223 is used, the junction-to-ambient thermal resistance is 174˚C/W and can be reduced by a heatsink (see Applications Hints on heatsinking).

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 0.5 square

inches of copper area, θJA is 50˚C/W; with 1 square inch of copper area, θJAis 37˚C/W; and with 1.6 or more inches of copper area, θJA is 32˚C/W.

Note 3: ESD rating is based on the human body model, 100 pF discharged through 1.5 kΩ.

Note 4: All characteristics are measured with a 0.22 µF capacitor from input to ground and a 0.1 µF capacitor from output to ground. All characteristics except noise

voltage and ripple rejection ratio are measured using pulse techniques (tw≤10 ms, duty cycle ≤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-5.0/883, LM140AK-12/883,

and LM140AK-15/883 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-5.0/883, LM140K-12/883, and LM140K-15/883 complied with the min and max limits for the respective versions of the LM140. The LM140H/883,

LM140K/883, and LM140AK/883 may also be procured as a Standard Military Drawing.

LM340/LM78MXX

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LM7808C

Electrical Characteristics

0˚C ≤T

≤+150˚C, V

= 14V, I

= 500 mA, C

= 0.33 µF, C

= 0.1 µF, unless otherwise specified

Symbol Parameter Conditions (Note 6) LM7808C Units

Min Typ Max

Output Voltage T

= 25˚C 7.7 8.0 8.3 V

∆V

Line Regulation T

= 25˚C 10.5V ≤V

≤25V 6.0 160 mV

11.0V ≤V

≤17V 2.0 80

∆V

Load Regulation T

= 25˚C 5.0 mA ≤I

≤1.5A 12 160 mV

250 mA ≤I

≤750

mA 4.0 80

Output Voltage 11.5V ≤V

≤23V, 5.0 mA ≤I

≤1.0A, P ≤15W 7.6 8.4 V

Quiescent

Current T

= 25˚C 4.3 8.0 mA

∆I

Quiescent With Line 11.5V ≤V

≤25V 1.0 mA

Current Change With

Load 5.0 mA ≤I

≤1.0A 0.5

Noise T

= 25˚C, 10 Hz ≤f≤100 kHz 52 µV

∆V

/∆V

Ripple Rejection f = 120 Hz, I

= 350 mA, T

= 25˚C 56 72 dB

Dropout Voltage I

= 1.0A, T

= 25˚C 2.0 V

Output Resistance f = 1.0 kHz 16 mΩ

Output Short Circuit Current T

= 25˚C, V

= 35V 0.45 A

Peak Output Current T

= 25˚C 2.2 A

∆V

/∆T Average Temperature I

= 5.0 mA 0.8 mV/˚C

Coefficient of Output Voltage

Note 6: All characteristics are measured with a 0.22 µF capacitor from input to ground and a 0.1 µF capacitor from output to ground. All characteristics except noise

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

must be taken into account separately.

Typical Performance Characteristics

Maximum Average Power

Dissipation

DS007781-22

Maximum Average Power

Dissipation

DS007781-23

Maximum Power

Dissipation (TO-263)

(See Note 2)

DS007781-24

LM340/LM78MXX

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Typical Performance Characteristics (Continued)

Output Voltage (Normalized

to 1V at T

= 25˚C)

DS007781-25

Note: Shaded area refers to LM340A/LM340,

LM7805C, LM7812C and LM7815C.

Ripple Rejection

DS007781-26

Ripple Rejection

DS007781-27

Output Impedance

DS007781-28

Dropout Characteristics

DS007781-29

Quiescent Current

DS007781-30

Note: Shaded area refers to LM340A/LM340,

LM7805C, LM7812C and LM7815C.

Peak Output Current

DS007781-31

Dropout Voltage

DS007781-32

Note: Shaded area refers to LM340A/LM340,

LM7805C, LM7812C and LM7815C.

Quiescent Current

DS007781-33

LM340/LM78MXX

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Typical Performance Characteristics (Continued)

Equivalent Schematic

Application Hints

The LM340/LM78XX series is designed with thermal protec-

tion, output short-circuit protection and output transistor safe

area protection. However, as with

any

IC regulator, it be-

comes necessary to take precautions to assure that the

regulator 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 capacitors

at the output of these regulators, a protection diode con-

nected input to output (

Figure 1

) may be required if the input

is shorted to ground. Without the protection diode, an input

short will cause the input to rapidly approach ground poten-

tial, while the output remains near the initial V

OUT

because of

the stored charge in the large output capacitor. The capacitor

will then discharge through a large internal input to output di-

ode and parasitic transistors. If the energy released by the

capacitor is large enough, this diode, low current metal and

the regulator will be destroyed. The fast diode in

Figure 1

will

shunt most of the capacitors discharge current around the

regulator. Generally no protection diode is required for val-

ues of output capacitance ≤10 µF.

Raising the Output Voltage above the Input Voltage:

Since the output of the device does not sink current, forcing

Line Regulation

140AK-5.0, I

OUT

= 1A, T

= 25˚C

DS007781-5

Line Regulation

140AK-5.0, V

= 10V, T

= 25˚C

DS007781-6

DS007781-7

LM340/LM78MXX

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Application Hints (Continued)

the output high can cause damage to internal low current

paths in a manner similar to that just described in the “Short-

ing the Regulator Input” section.

Regulator Floating Ground (

Figure 2

): When the ground

pin alone becomes disconnected, the output approaches the

unregulated input, causing possible damage to other circuits

connected to V

OUT

. If ground is reconnected with power

“ON”, damage may also occur to the regulator. This fault is

most likely to occur when plugging in regulators or modules

with on card regulators into powered up sockets. Power

should be turned off first, thermal limit ceases operating, or

ground should be connected first if power must be left on.

Transient Voltages: If transients exceed the maximum

rated input voltage of the device, or reach more than 0.8V

below ground and have sufficient energy, they will damage

the regulator. The solution is to use a large input capacitor, a

series input breakdown diode, a choke, a transient suppres-

sor or a combination of these.

When a value for θ

(H–A)

is found using the equation shown,

a heatsink must be selected that has

a value that is less than

or equal to this number.

(H–A)

is specified numerically by the heatsink manufacturer

in this catalog, or shown in a curve that plots temperature

rise vs power dissipation for the heatsink.

HEATSINKING TO-263 AND SOT-223 PACKAGE PARTS

Both the TO-263 (“S”) and SOT-223 (“MP”) packages use a

copper plane on the PCB and the PCB itself as a heatsink.

To optimize the heat sinking ability of the plane and PCB,

solder the tab of the plane.

shows for the TO-263 the measured values of θ

(J–A)

for dif-

ferent copper area sizes using a typical PCB with 1 ounce

copper

and no solder mask over the copper area used for

heatsinking

As shown in the figure, increasing the copper area beyond 1

square inch produces very little improvement. It should also

be observed that the minimum value of θ

(J–A)

for the TO-263

package mounted to a PCB is 32˚C/W.

As a design aid,

Figure 5

shows the maximum allowable

power dissipation compared to ambient temperature for the

TO-263 device (assuming θ

(J–A)

is 35˚C/W and the maxi-

mum junction temperature is 125˚C).

DS007781-8

FIGURE 1. Input Short

DS007781-9

FIGURE 2. Regulator Floating Ground

DS007781-10

FIGURE 3. Transients

DS007781-39

FIGURE 4. θ

(J–A)

vs Copper (1 ounce)

Area for the TO-263 Package

DS007781-40

FIGURE 5. Maximum Power Dissipation vs

AMB

for the TO-263 Package

LM340/LM78MXX

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Application Hints (Continued)

Figures 6, 7

show the information for the SOT-223 package.

Figure 6

assumes a θ

(J–A)

of 74˚C/W for 1 ounce copper and

51˚C/W for 2 ounce copper and a maximum junction tem-

perature of 125˚C.

Please see AN-1028 for power enhancement techniques to

be used with the SOT-223 package.

Typical Applications

DS007781-41

FIGURE 6. θ

(J–A)

vs Copper (2 ounce) Area

for the SOT-223 Package

DS007781-42

FIGURE 7. Maximum Power Dissipation vs

AMB

for the SOT-223 Package

Fixed Output Regulator

DS007781-13

Note: Bypass capacitors are recommended for optimum stability and

transient response, and should be located as close as possible to the

regulator.

High Input Voltage Circuits

DS007781-14

DS007781-15

LM340/LM78MXX

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Typical Applications (Continued)

High Current Voltage Regulator

DS007781-16

High Output Current, Short Circuit Protected

DS007781-17

Positive and Negative Regulator

DS007781-18

LM340/LM78MXX

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Connection Diagrams and Ordering Information

†The specifications for the LM140H/883 devices are not contained in this datasheet. If specifications for these devices

are required, contact the National Semiconductor Sales Office/Distributors.

TO-3 Metal Can Package (K)

DS007781-11

Bottom View

Steel Package Order Numbers:

LM140K-5.0 LM140K-12 LM140K-15

LM340K-12 LM340K-15

LM340K-5.0

See Package Number K02A

LM140K-5.0/883 LM140K-12/883 LM140K-15/883

See Package Number K02C

TO-220 Power Package (T)

DS007781-12

Top View

Plastic Package Order Numbers:

LM340AT-5.0 LM340T-5.0

LM340T-12 LM340T-15

LM7805CT LM7812CT

LM7815CT LM7808CT

See Package Number T03B

TO-39 Metal Can Package (H)

DS007781-19

Top View

Metal Can Order Numbers†:

LM140H-5.0/883 LM140H-6.0/883

LM140H-8.0/883 LM140H-12/883

LM140H-15/883 LM140H-24/883

See Package Number H03A

TO-263 Surface-Mount Package (S)

DS007781-20

Top View

DS007781-21

Side View

Surface-Mount Package Order Numbers:

LM340S-5.0 LM340S-12

See Package Number TS3B

3-Lead SOT-223

(Front View)

Order Number LM340MP-5.0

Package Marked NO0A

See Package Number MA04A

DS007781-43

LM340/LM78MXX

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Physical Dimensions inches (millimeters) unless otherwise noted

TO-3 Metal Can Package (K)

Order Number LM140K-5.0, LM340K-5.0, LM140K-12, LM340K-12,

LM140K-15, LM340K-15, LM7806CK, LM7808CK, LM7818CK or LM7824CK

NS Package Number K02A

TO-3 Metal Can Package (K)

Mil-Aero Products

Order Number LM140K-5.0/883, LM140K-12/883, or LM140K-15/883

NS Package Number K02C

LM340/LM78MXX

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

TO-263 Surface-Mount Package (S)

Order Number LM340S-5.0 or LM340S-12

NS Package Number TS3B

LM340/LM78MXX

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

TO-220 Power Package (T)

Order Number LM340AT/LM340T-5.0, LM340AT/LM340T-12, LM340AT/LM340T-15,

LM7805CT, LM7812CT, LM7815CT, LM7806CT, LM7808CT, LM7818CT or LM7824CT

NS Package Number T03B

LM340/LM78MXX

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

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COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

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whose failure to perform when properly used in

accordance with instructions for use provided in the

labeling, can be reasonably expected to result in a

significant injury to the user.

2. A critical component is any component of a life

support device or system whose failure to perform

can be reasonably expected to cause the failure of

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3-Lead SOT-223 Package

Order Part Number LM340MP-5.0

NS Package Number MA04A

LM340/LM78MXX Series 3-Terminal Positive Regulators

National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.