LM2940T-10 National Semiconductor, LM2940T-10 Datasheet

LM2940T-10

Manufacturer Part Number

LM2940T-10

Description

Manufacturer

National Semiconductor

Datasheets

1.LM2940T-9.0.pdf (19 pages)

2.LM2940T-9.0.pdf (17 pages)

Specifications of LM2940T-10

Case

TO220-3L

Date_code

09+

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

LM2940T-10

Manufacturer:

Quantity:

20 000

Company:

BOSTOCK HK LIMITED

Part Number:

LM2940T-10.0

Manufacturer:

Quantity:

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Company:

Meier Automation Equipment Co., Limited

Part Number:

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The physical size of the SOT-223 is too small to contain the full device part number. The package markings indicated are what will appear on the actual device.

For information on military temperature range products, please go to the Mil/Aero Web Site at http://www.national.com/appinfo/milaero/index.html.

LM2940/LM2940C

1A Low Dropout Regulator

General Description

The LM2940/LM2940C positive voltage regulator features

the ability to source 1A of output current with a dropout volt-

age of typically 0.5V and a maximum of 1V over the entire

temperature range. Furthermore, a quiescent current reduc-

tion circuit has been included which reduces the ground cur-

rent when the differential between the input voltage and the

output voltage exceeds approximately 3V. The quiescent

current with 1A of output current and an input-output differ-

ential of 5V is therefore only 30 mA. Higher quiescent cur-

rents only exist when the regulator is in the dropout mode

Designed also for vehicular applications, the LM2940/

LM2940C and all regulated circuitry are protected from re-

verse battery installations or 2-battery jumps. During line

transients, such as load dump when the input voltage can

Typical Application

to the regulator. This capacitor must be rated over the same operating temperature range as the regulator and the ESR is critical; see curve.

Ordering Information

−40˚C

Required if regulator is located far from power supply filter.

SOT-223 Package

−55˚C

0˚C

OUT

Temperature

− V

Marking

Range

must be at least 22 µF to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible

Range

OUT

125˚C

85˚C

125˚C

3V).

LM2940CT-5.0

LM2940CS-5.0

LM2940T-5.0

LM2940S-5.0

LM2940IMP-5.0

LM2940IMPX-5.0 LM2940IMPX-8.0 LM2940IMPX-9.0 LM2940IMPX-10 LM2940IMPX-12 LM2940IMPX-15 SOT-223

LM2940WG5.0/883

LM2940J-5.0/883

5962-8958701EA

5962-8958701XA

L53B

5.0

LM2940T-8.0

LM2940S-8.0

LM2940IMP-8.0

DS008822

L54B

8.0

5962-9088301QEA

LM2940J-8.0/883

LM2940CT-9.0

LM2940CS-9.0

LM2940T-9.0

LM2940S-9.0

LM2940IMP-9.0

8.0

L0EB

9.0

Output Voltage

momentarily exceed the specified maximum operating volt-

age, the regulator will automatically shut down to protect

both the internal circuits and the load. The LM2940/

LM2940C cannot be harmed by temporary mirror-image in-

sertion. Familiar regulator features such as short circuit and

thermal overload protection are also provided.

Features

n Dropout voltage typically 0.5V

n Output current in excess of 1A

n Output voltage trimmed before assembly

n Reverse battery protection

n Internal short circuit current limit

n Mirror image insertion protection

n P

LM2940T-10

LM2940S-10

LM2940IMP-10

5962-9088401QEA

Product Enhancement tested

LM2940J-12/883

L55B

DS008822-3

LM2940CT-12

LM2940CS-12

LM2940T-12

LM2940S-12

LM2940IMP-12

L56B

5962-9088501QEA

LM2940J-15/883

LM2940CT-15

LM2940CS-15

LM2940IMP-15

= 1A

L70B

www.national.com

March 2000

Package

WG16A

SOT-223

in Tape

and Reel

Package

J16A

TO-220

TO-263

TO-220

TO-263

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