Datasheet > LM2940WG-12/883

LM2940WG-12/883

更新时间： 2024-09-29 02:52:55

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器
页数	文件大小	规格书
14页	265K
描述
1A LOW DROPOUT REGULATOR

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中文翻译

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数据手册

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LM2940WG-12/883 数据手册

MICROCIRCUIT DATA SHEET

Original Creation Date: 07/22/96

Last Update Date: 10/08/99

MNLM2940-12-X REV 1A1

Last Major Revision Date: 07/22/96

1A LOW DROPOUT REGULATOR

General Description

The LM2940 positive voltage regulator features the ability to source 1A of ouput current

with a dropout voltage of typically 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 current 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 differential of 5V is therefore only 30 mA. Higher quiescent currents only

exist when the regulator is in the dropout mode (Vin - Vout < 3V).

Designed also for vehicular applications, the LM2940 and all regulated circuitry are

protected from reverse battery installations or 2-battery jumps. During line transients,

such as load dump when the input voltage can momentarily exceed the specified maximum

operating voltage, the regulator will automaically shut down to protect both the internal

circuits and the load. The LM2940 cannot be harmed by temporary mirror-image insertion.

Familiar regulator features such as short circuit and thermal overload protection are also

provided.

Industry Part Number

NS Part Numbers

LM2940

LM2940J-12/883

LM2940K-12/883

LM2940WG-12/883

Prime Die

LM2940

Controlling Document

SEE FEATURE SECTION

Processing

Subgrp Description

Temp (^oC)

MIL-STD-883, Method 5004

Static tests at

+25

Static tests at

+125

-55

Static tests at

Dynamic tests at

Functional tests at

Switching tests at

+25

Quality Conformance Inspection

+125

-55

MIL-STD-883, Method 5005

+25

+125

-55

+25

+125

-55

12 3 4 5 6 7...14

中文翻译

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