LM2941_07 NSC [National Semiconductor], LM2941_07 Datasheet

LM2941_07

Manufacturer Part Number

LM2941_07

Description

1A Low Dropout Adjustable Regulator

Manufacturer

NSC [National Semiconductor]

Datasheet

1.LM2941_07.pdf (14 pages)

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LM2941/LM2941C

1A Low Dropout Adjustable Regulator

General Description

The LM2941 positive voltage regulator features the ability to

source 1A of output current with a typical dropout voltage of

0.5V and a maximum of 1V over the entire temperature range.

Furthermore, a quiescent current reduction circuit has been

included which reduces the ground pin current when the dif-

ferential between the input voltage and the output voltage

exceeds approximately 3V. The quiescent current with 1A of

output current and an input-output differential of 5V is there-

fore only 30mA. Higher quiescent currents only exist when the

regulator is in the dropout mode (V

Designed also for vehicular applications, the LM2941 and all

regulated circuitry are protected from reverse battery instal-

lations or two-battery jumps. During line transients, such as

load dump when the input voltage can momentarily exceed

the specified maximum operating voltage, the regulator will

automatically shut down to protect both the internal circuits

Connection Diagram and Ordering Information

16-Lead Ceramic Dual-in-Line Package

Note: Pin 2 & 7 are fused to center DAP

Order Number LM2941T or LM2941CT

LM2941J-QMLV, 5962-9166701QEA

See NS Package Number TO5A

See NS Package Number J16A

Order Number LM2941J/883

TO-220 Plastic Package

Top View

882331

882302

− V

OUT

8823

Order Number LM2941S, LM2941SX or

LM2941WG-QMLV, 5962-9166701QYA

See NS Package Number WG16A

≤

16-Lead Ceramic Surface Mount

TO-263 Surface-Mount Package

See NS Package Number TS5B

Order Number LM2941WG/883

3V).

LM2941CS, LM2941CSX

Top View

Package

and the load. Familiar regulator features such as short circuit

and thermal overload protection are also provided.

Features

■

LLP space saving package

Output voltage adjustable from 5V to 20V

Dropout voltage typically 0.5V @ I

Output current in excess of 1A

Trimmed reference voltage

Reverse battery protection

Internal short circuit current limit

Mirror image insertion protection

TTL, CMOS compatible ON/OFF switch

Product Enhancement tested

882332

882308

8-Lead LLP Surface Mount Package

See NS Package Number LDC08A

Ordering Number LM2941LD,

LM2941LDX

Top View

= 1A

November 7, 2007

882309

www.national.com

882333

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