LM340T-15 [NSC]

Series 3-Terminal Positive Regulators; 系列三端稳压器正


型号：	LM340T-15
厂家：	National Semiconductor
描述：	Series 3-Terminal Positive Regulators 系列三端稳压器正三端稳压器
文件：	总15页 (文件大小：515K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

May 1999

LM140/LM340A/LM340/LM7800C

Series 3-Terminal Positive Regulators

General Description

Features

n Complete specifications at 1A load

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 1.0A output 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.

n Output voltage tolerances of 2% at T_j25˚C and 4%

over the temperature range (LM140A/LM340A)

n Line regulation of 0.01% of V_OUT/V of ∆V_INat 1A load

(LM140A/LM340A)

n Load regulation of 0.3% of V_OUT/A (LM140A/LM340A)

n Internal thermal overload protection

n Internal short-circuit current limit

n Output transistor safe area protection

n P⁺Product Enhancement tested

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.

Output

Device

LM140

Packages

Voltages

5, 12,

TO-3 (K)

LM340A/LM340 5, 12,

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

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

(5V and 12V only)

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.

LM7800C

5, 8, 12, TO-220 (T)

Typical Applications

Fixed Output Regulator

Adjustable 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

DS007781-2

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

5V + (5V/R1 + I ) R2 5V/R1 3 I ,

Q Q

OUT

load regulation (L ) ≈ [(R1 + R2)/R1] (L of LM340-5).

Current Regulator

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

Packages

DS007781-3

DS007781-38

∆I = 1.3 mA over line and load changes.

Scale 1:1

DS007781

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Lead Temperature (Soldering, 10 sec.)

TO-3 Package (K)

300˚C

TO-220 Package (T), TO-263

Package (S)

230˚C

2 kV

ESD Susceptibility (Note 3)

(Note 5)

DC Input Voltage

All Devices except

Operating Conditions (Note 1)

LM7824/LM7824C

35V

40V

Temperature Range (T_A) (Note 2)

LM7824/LM7824C

LM140A, LM140

−55˚C to +125˚C

0˚C to +125˚C

Internal Power Dissipation (Note 2)

Maximum Junction Temperature

Storage Temperature Range

Internally Limited

150˚C

LM340A, LM340, LM7805C,

LM7812C, LM7815C, LM7808C

−65˚C to +150˚C

LM340A

Electrical Characteristics

I_OUT1A, −55˚C ≤ T_J≤+150˚C (LM140A), or 0˚C ≤ T_J≤+ 125˚C (LM340A) unless otherwise specified (Note 4)

Output Voltage

12V

19V

15V

Symbol

Input Voltage (unless otherwise noted)

10V

23V

Typ

Units

Parameter

Conditions

Min Typ Max Min Typ Max Min

Max

15.3

15.6

V_O

Output Voltage

T_J25˚C

4.9

4.8

5.1 11.75 12 12.25 14.7

5.2 11.5 12.5 14.4

P_D≤ 15W, 5 mA ≤ I_O≤ 1A

V_MIN≤ V_IN≤ V_MAX

(7.5 ≤ V_IN≤ 20)

(14.8 ≤ V_IN≤ 27)

(17.9 ≤ V_IN≤ 30)

∆V_O

Line Regulation

I_O500 mA

∆V_IN

(7.5 ≤ V_IN≤ 20)

(14.8 ≤ V_IN≤ 27)

T_J25˚C

∆V_IN

(7.5 ≤ V_IN≤ 20)

(14.5 ≤ V_IN≤ 27)

(17.5 ≤ V_IN≤ 30)

T_J25˚C

(20 ≤ V_IN≤ 26)

Over Temperature

∆V_IN

(8 ≤ V_IN≤ 12)

(16 ≤ V_IN≤ 22)

∆V_O

Load Regulation

T_J25˚C

5 mA ≤ I_O≤ 1.5A

250 mA ≤ I_O≤ 750 mA

Over Temperature,

5 mA ≤ I_O≤ 1A

I_Q

Quiescent Current

T_J25˚C

Over Temperature

6.5

0.5

0.8

6.5

0.5

0.8

6.5

0.5

0.8

∆I_Q

Quiescent Current

Change

5 mA ≤ I_O≤ 1A

T_J25˚C, I_O1A

V_MIN≤ V_IN≤ V_MAX

(7.5 ≤ V_IN≤ 20)

(14.8 ≤ V_IN≤ 27)

(17.9 ≤ V_IN≤ 30)

0.8

I_O500 mA

0.8

(8 ≤ V_IN≤ 25)

0.8

(15 ≤ V_IN≤ 30)

V_MIN≤ V_IN≤ V_MAX

(17.9 ≤ V_IN≤ 30)

V_N

R_O

V_IN

Output Noise Voltage

Ripple Rejection

T_A25˚C, 10 Hz ≤ f ≤ 100 kHz

µV

T_J25˚C, f 120 Hz, I_O1A

or f 120 Hz, I_O500 mA,

Over Temperature,

V_MIN≤ V_IN≤ V_MAX

(8 ≤ V_IN≤ 18)

(15 ≤ V_IN≤ 25)

(18.5 ≤ V_IN≤ 28.5)

Dropout Voltage

T_J25˚C, I_O1A

2.0

Output Resistance

Short-Circuit Current

Peak Output Current

Average TC of V_O

Input Voltage

1 kHz

mΩ

T_J25˚C

2.1

2.4

−0.6

1.5

1.2

2.4

−1.8

T_J25˚C

2.4

Min, T_J0˚C, I_O5 mA

−1.5

mV/˚C

T_J25˚C

Required to Maintain

Line Regulation

7.5

14.5

17.5

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LM140

Electrical Characteristics ^{(Note 4)}

−55˚C ≤ T_J≤ +150˚C unless otherwise specified

Output Voltage

12V

15V

23V

Symbol

Input Voltage (unless otherwise noted)

Parameter Conditions

10V

19V

Units

Min Typ Max Min

Typ Max

12 12.5

Min Typ

Max

15.6

V_O

Output Voltage

T_J25˚C, 5 mA ≤ I_O≤ 1A

P_D≤ 15W, 5 mA ≤ I_O≤ 1A

V_MIN≤ V_IN≤ V_MAX

4.8

5.2

5.25 11.4

(15.5 ≤ V_IN≤ 27)

120

11.5

14.4

4.75

12.6 14.25

15.75

(8 ≤ V_IN≤ 20)

(18.5 ≤ V_IN≤ 30)

150

∆V_O

Line Regulation

I_O500 mA

T_J25˚C

∆V_IN

(7 ≤ V_IN≤ 25)

(14.5 ≤ V_IN≤ 30)

120

(17.5 ≤ V_IN≤ 30)

150

−55˚C ≤ T_J≤ +150˚C

∆V_IN

(8 ≤ V_IN≤ 20)

(15 ≤ V_IN≤ 27)

120

(18.5 ≤ V_IN≤ 30)

150

I_O≤ 1A

T_J25˚C

∆V_IN

(7.5 ≤ V_IN≤ 20)

(14.6 ≤ V_IN≤ 27)

(17.7 ≤ V_IN≤ 30)

−55˚C ≤ T_J≤ +150˚C

∆V_IN

(8 ≤ V_IN≤ 12)

(16 ≤ V_IN≤ 22)

(20 ≤ V_IN≤ 26)

∆V_O

Load Regulation

T_J25˚C

5 mA ≤ I_O≤ 1.5A

250 mA ≤ I_P≤ 750 mA

120

150

−55˚C ≤ T_J≤ +150˚C,

5 mA ≤ I_O≤ 1A

120

150

I_Q

Quiescent Current

I_O≤ 1A

T_J25˚C

−55˚C ≤ T_J≤ +150˚C

∆I_Q

Quiescent Current

Change

5 mA ≤ I_O≤ 1A

0.5

0.8

0.5

0.8

0.5

0.8

T_J25˚C, I_O≤ 1A

V_MIN≤ V_IN≤ V_MAX

(8 ≤ V_IN≤ 20)

0.8

(15 ≤ V_IN≤ 27)

0.8

(18.5 ≤ V_IN≤ 30)

I_O500 mA, −55˚C ≤ T_J≤ +150˚C

0.8

(18.5 ≤ V_IN≤ 30)

V_MIN≤ V_IN≤ V_MAX

(8 ≤ V_IN≤ 25)

(15 ≤ V_IN≤ 30)

V_N

R_O

V_IN

Output Noise Voltage

Ripple Rejection

T_A25˚C, 10 Hz ≤ f ≤ 100 kHz

µV

I_O≤ 1A, T_J25˚C or

I_O≤ 500 mA,

120 Hz

−55˚C ≤ T_J≤+150˚C

V_MIN≤ V_IN≤ V_MAX

(8 ≤ V_IN≤ 18)

(15 ≤ V_IN≤ 25)

(18.5 ≤ V_IN≤ 28.5)

Dropout Voltage

T_J25˚C, I_O1A

2.0

Output Resistance

Short-Circuit Current

Peak Output Current

Average TC of V_OUT

Input Voltage

1 kHz

mΩ

T_J25˚C

2.1

2.4

−0.6

1.5

2.4

−1.5

1.2

T_J25˚C

0˚C ≤ T_J≤ +150˚C, I_O5 mA

2.4

−1.8

mV/˚C

T_J25˚C, I_O≤ 1A

Required to Maintain

Line Regulation

7.5

14.6

17.7

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LM340/LM7800C

Electrical Characteristics ^{(Note 4)}

0˚C ≤ T_J≤ +125˚C unless otherwise specified

Output Voltage

12V

19V

15V

23V

Symbol

Input Voltage (unless otherwise noted)

Parameter Conditions

10V

Units

Min

4.8

Typ Max Min

Typ Max Min Typ Max

V_O

Output Voltage

T_J25˚C, 5 mA ≤ I_O≤ 1A

P_D≤ 15W, 5 mA ≤ I_O≤ 1A

V_MIN≤ V_IN≤ V_MAX

5.2

11.5

12 12.5 14.4

12.6 14.25

15.6

4.75

5.25 11.4

15.75

(7.5 ≤ V_IN≤ 20)

(14.5 ≤ V_IN≤ 27)

120

(17.5 ≤ V_IN≤ 30)

150

∆V_O

Line Regulation

I_O500 mA

T_J25˚C

∆V_IN

(7 ≤ V_IN≤ 25)

(14.5 ≤ V_IN≤ 30)

120

(17.5 ≤ V_IN≤ 30)

150

0˚C ≤ T_J≤ +125˚C

∆V_IN

(8 ≤ V_IN≤ 20)

(7.5 ≤ V_IN≤ 20)

(8 ≤ V_IN≤ 12)

10 50

(15 ≤ V_IN≤ 27)

120

(18.5 ≤ V_IN≤ 30)

150

I_O≤ 1A

T_J25˚C

∆V_IN

(14.6 ≤ V_IN≤ 27)

(17.7 ≤ V_IN≤ 30)

0˚C ≤ T_J≤ +125˚C

∆V_IN

(16 ≤ V_IN≤ 22)

(20 ≤ V_IN≤ 26)

∆V_O

Load Regulation

T_J25˚C

5 mA ≤ I_O≤ 1.5A

250 mA ≤ I_O≤ 750 mA

120

150

5 mA ≤ I_O≤ 1A, 0˚C ≤ T_J≤ +125˚C

120

150

I_Q

Quiescent Current

I_O≤ 1A

T_J25˚C

0˚C ≤ T_J≤ +125˚C

8.5

0.5

1.0

8.5

0.5

1.0

8.5

0.5

1.0

∆I_Q

Quiescent Current

Change

5 mA ≤ I_O≤ 1A

T_J25˚C, I_O≤ 1A

V_MIN≤ V_IN≤ V_MAX

(7.5 ≤ V_IN≤ 20)

1.0

(14.8 ≤ V_IN≤ 27)

(17.9 ≤ V_IN≤ 30)

I_O≤ 500 mA, 0˚C ≤ T_J≤ +125˚C

V_MIN≤ V_IN≤ V_MAX

1.0

(14.5 ≤ V_IN≤ 30)

1.0

(17.5 ≤ V_IN≤ 30)

(7 ≤ V_IN≤ 25)

V_N

Output Noise Voltage

Ripple Rejection

T_A25˚C, 10 Hz ≤ f ≤ 100 kHz

µV

I_O≤ 1A, T_J25˚C

120 Hz

or I_O≤ 500 mA,

0˚C ≤ T_J≤ +125˚C

V_MIN≤ V_IN≤ V_MAX

(8 ≤ V_IN≤ 18)

(15 ≤ V_IN≤ 25)

(18.5 ≤ V_IN

≤

28.5)

R_O

Dropout Voltage

T_J25˚C, I_O1A

2.0

mΩ

1 kHz

Output Resistance

Short-Circuit Current

Peak Output Current

Average TC of V_OUT

Input Voltage

T_J25˚C

2.1

2.4

−0.6

1.5

2.4

−1.5

1.2

T_J25˚C

0˚C ≤ T_J≤ +125˚C, I_O5 mA

2.4

−1.8

mV/˚C

T_J25˚C, I_O≤ 1A

V_IN

Required to Maintain

Line Regulation

7.5

14.6

17.7

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 (T

JMAX

125˚C or

150˚C), the junction-to-ambient thermal resistance (θ ), and the ambient temperature (T ). P

JA DMAX

− T )/θ . If this dissipation is exceeded, the die tem-

JMAX

perature will rise above T

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

JMAX

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

JA JA

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

JC JA JC

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, θ is 50˚C/W; with 1 square inch of copper area, θ is 37˚C/W; and with 1.6 or more inches of copper area, θ 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 (t ≤ 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.

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LM7808C

Electrical Characteristics

0˚C ≤ T_J≤ +150˚C, V_I14V, I_O500 mA, C_I0.33 µF, C_O0.1 µF, unless otherwise specified

Symbol

Parameter

Conditions (Note 6)

LM7808C

Typ

8.0

Units

Min

Max

8.3

160

V_O

Output Voltage

T_J25˚C

7.7

∆V_O

Line Regulation

Load Regulation

T_J25˚C

10.5V ≤ V_I≤ 25V

6.0

11.0V ≤ V_I≤ 17V

2.0

∆V_O

T_J25˚C

5.0 mA ≤ I_O≤ 1.5A

160

250 mA ≤ I_O≤ 750

4.0

V_O

I_Q

Output Voltage

11.5V ≤ V_I≤ 23V, 5.0 mA ≤ I_O≤ 1.0A, P ≤ 15W

7.6

8.4

8.0

Quiescent

Current

T_J25˚C

4.3

∆I_Q

Quiescent

Current Change

Noise

With Line

11.5V ≤ V_I≤ 25V

1.0

0.5

With

Load

5.0 mA ≤ I_O≤ 1.0A

V_N

T_A25˚C, 10 Hz ≤ f ≤ 100 kHz

µV

∆V_I/∆V_ORipple Rejection

120 Hz, I_O350 mA, T_J25˚C

V_DO

R_O

Dropout Voltage

I_O1.0A, T_J25˚C

2.0

Output Resistance

1.0 kHz

mΩ

I_OS

Output Short Circuit Current

Peak Output Current

T_J25˚C, V_I35V

0.45

2.2

0.8

I_PK

T_J25˚C

∆V_O/∆T

Average Temperature

I_O5.0 mA

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 (t ≤ 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

Maximum Average Power

Dissipation

Maximum Power

Dissipation (TO-263)

(See Note 2)

DS007781-22

DS007781-23

DS007781-24

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Typical Performance Characteristics (Continued)

Output Voltage (Normalized

Ripple Rejection

to 1V at T_j25˚C)

DS007781-26

DS007781-27

DS007781-25

Note: Shaded area refers to LM340A/LM340,

LM7805C, LM7812C and LM7815C.

Output Impedance

Dropout Characteristics

Quiescent Current

DS007781-29

DS007781-28

DS007781-30

Note: Shaded area refers to LM340A/LM340,

LM7805C, LM7812C and LM7815C.

Peak Output Current

Dropout Voltage

Quiescent Current

DS007781-31

DS007781-33

DS007781-32

Note: Shaded area refers to LM340A/LM340,

LM7805C, LM7812C and LM7815C.

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Typical Performance Characteristics (Continued)

Line Regulation

140AK-5.0, I_OUT1A, T_A25˚C

Line Regulation

140AK-5.0, V_IN10V, T_A25˚C

DS007781-5

DS007781-6

Equivalent Schematic

DS007781-7

short will cause the input to rapidly approach ground poten-

tial, while the output remains near the initial V_OUTbecause 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.

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

Raising the Output Voltage above the Input Voltage:

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

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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.

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.

θ_(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.

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.

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.

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.

DS007781-39

FIGURE 4. θ_(J–A)vs Copper (1 ounce)

DS007781-8

Area for the TO-263 Package

FIGURE 1. Input Short

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).

DS007781-9

FIGURE 2. Regulator Floating Ground

DS007781-40

FIGURE 5. Maximum Power Dissipation vs

T_AMBfor the TO-263 Package

DS007781-10

FIGURE 3. Transients

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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.

DS007781-42

FIGURE 7. Maximum Power Dissipation vs

T_AMBfor the SOT-223 Package

DS007781-41

Please see AN-1028 for power enhancement techniques to

be used with the SOT-223 package.

FIGURE 6. θ_(J–A)vs Copper (2 ounce) Area

for the SOT-223 Package

Typical Applications

Fixed Output Regulator

High Input Voltage Circuits

DS007781-14

DS007781-13

Note: Bypass capacitors are recommended for optimum stability and

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

regulator.

DS007781-15

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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

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Connection Diagrams and Ordering Information

TO-3 Metal Can Package (K)

TO-220 Power Package (T)

DS007781-11

DS007781-12

Bottom View

Steel Package Order Numbers:

LM140K-5.0 LM140K-12 LM140K-15

LM340K-12 LM340K-15

Top View

Plastic Package Order Numbers:

LM340AT-5.0 LM340T-5.0

LM340T-12 LM340T-15

LM7805CT LM7812CT

LM7815CT LM7808CT

See Package Number T03B

LM340K-5.0

See Package Number K02A

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

See Package Number K02C

TO-39 Metal Can Package (H)

DS007781-19

Top View

Metal Can Order Numbers :

†

LM140H-5.0/883

LM140H-8.0/883

LM140H-15/883

LM140H-6.0/883

LM140H-12/883

LM140H-24/883

See Package Number H03A

TO-263 Surface-Mount Package (S)

DS007781-21

Side View

Surface-Mount Package Order Numbers:

LM340S-5.0 LM340S-12

See Package Number TS3B

DS007781-20

Top View

3-Lead SOT-223

(Front View)

Order Number LM340MP-5.0

Package Marked NO0A

See Package Number MA04A

DS007781-43

†

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.

www.national.com

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

www.national.com

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

www.national.com

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

www.national.com

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

3-Lead SOT-223 Package

Order Part Number LM340MP-5.0

NS Package Number MA04A

LIFE SUPPORT POLICY

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL

COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or

systems which, (a) are intended for surgical implant

into the body, or (b) support or sustain life, and

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

the life support device or system, or to affect its

safety or effectiveness.

National Semiconductor

Corporation

Americas

Tel: 1-800-272-9959

Fax: 1-800-737-7018

Email: support@nsc.com

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Response Group

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Fax: 65-2504466

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Fax: 81-3-5639-7507

Fax: +49 (0) 1 80-530 85 86

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Français Tel: +49 (0) 1 80-532 93 58

Italiano Tel: +49 (0) 1 80-534 16 80

Email: sea.support@nsc.com

www.national.com

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.

LM340T-15 [NSC]

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