Datasheet > MIC2940A

MIC2940A

更新时间： 2024-11-21 22:54:51

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器
页数	文件大小	规格书
8页	124K
描述
1.25A Low-Dropout Voltage Regulator Preliminary Information

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中文翻译

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MIC2940A 数据手册

MIC2940A/2941A

Micrel

MIC2940A/2941A

1.25A Low-Dropout Voltage Regulator

Preliminary Information

General Description

Features

•

High output voltage accuracy

Guaranteed 1.25A output

The MIC2940A and MIC2941A are “bulletproof” efficient

voltage regulators with very low dropout voltage (typically

40mV at light loads and 350mV at 1A), and low quiescent

current(240µAtypical).ThequiescentcurrentoftheMIC2940A

increases only slightly in dropout, thus prolonging battery life.

Key MIC2940A features include protection against reversed

battery,fold-backcurrentlimiting,andautomotive“loaddump”

protection (60V positive transient).

Low quiescent current

Low dropout voltage

Extremely tight load and line regulation

Very low temperature coefficient

Current and thermal limiting

Input can withstand –20V reverse battery and +60V

positive transients

The MIC2940 is available in both fixed voltage (3.3V, 5V, and

12V) and adjustable voltage configurations. The MIC2940A-

xx devices are three pin fixed voltage regulators. A logic-

compatible shutdown input is provided on the adjustable

MIC2941A,whichenablestheregulatortobeswitchedonand

off.

•

Logic-controlled electronic shutdown

Output programmable from 1.24V to 26V(MIC2941A)

Available in TO-220, TO-263, TO-220-5, and TO-263-5

packages.

Applications

•

Battery Powered Equipment

Cellular Telephones

Laptop, Notebook, and Palmtop Computers

PCMCIA V_CCand V_PPRegulation/Switching

Bar Code Scanners

Automotive Electronics

SMPS Post-Regulator/ DC to DC Modules

Voltage Reference

High Efficiency Linear Power Supplies

Pin Configuration

2 3 4 5

INPUT GROUND OUTPUT

TO-263 Package

TO-263-5 Package

(MIC2941ABU)

(MIC2940A-xxBU)

MIC2941A Pinout

1) Adjust

2) Shutdown

3) Ground

4) Input

2 3 4 5

Front View

OUTPUT

INPUT GROUND

TO-220 Package

(MIC2940A-xxBT)

5) Output

TO-220-5 Package

(MIC2941ABT)

The Tab is Ground on TO-220 and TO-263 packages

June 1999

MIC2940A/2941A

12 3 4 5 6 7 8

中文翻译

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与MIC2940A相关器件

型号	品牌	获取价格	描述	数据表
MIC2940A_07	MICREL	获取价格	1.2A Low-Dropout Voltage Regulator
MIC2940A-12BK	MICROCHIP	获取价格	12V FIXED POSITIVE LDO REGULATOR, 0.45V DROPOUT, MBFM2
MIC2940A-12BT	MICREL	获取价格	1.25A Low-Dropout Voltage Regulator Preliminary Information
MIC2940A-12BTTR	MICREL	获取价格	Regulator, 1 Output, 12V1, BIPolar
MIC2940A-12BU	MICREL	获取价格	1.25A Low-Dropout Voltage Regulator Preliminary Information
MIC2940A-12WT	MICREL	获取价格	1.2A Low-Dropout Voltage Regulator
MIC2940A-12WU	MICREL	获取价格	1.2A Low-Dropout Voltage Regulator
MIC2940A-12WUTR	MICREL	获取价格	12V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PSSO3, ROHS COMPLIANT, TO-263, 3 PIN
MIC2940A-15BK	MICROCHIP	获取价格	15V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, MBFM2
MIC2940A-15BT	MICROCHIP	获取价格	15V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PSFM3

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