Datasheet > LP2951

LP2951

更新时间： 2024-11-22 22:46:59

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器
页数	文件大小	规格书
14页	137K
描述
100mA Low-Dropout Voltage Regulator

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中文翻译

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LP2951 数据手册

LP2950/2951

Micrel

LP2950/2951

100mA Low-Dropout Voltage Regulator

General Description

Features

The LP2950 and LP2951 are micropower voltage regulators

with very low dropout voltage (typically 40mV at light loads

and 380mV at 100mA), and very low quiescent current (75µA

typical). The quiescent current of the LP2950/LP2951

increases only slightly in dropout, thus prolonging battery life.

This feature, among others, makes the LP2950 and LP2951

ideally suited for use in battery-powered systems.

•

High accuracy 5V, guaranteed 100 mA output

Extremely low quiescent current

Low-dropout voltage

Extremely tight load and line regulation

Very low temperature coefficient

Use as regulator or reference

Needs only 1µF for stability

Current and thermal limiting

Available in a 3-Pin TO-92 package, the LP2950 is pin-

compatible with the older 5V regulators. Additional system

functions, such as programmable output voltage and logic-

controlled shutdown, are available in the 8-pin DIP and 8-pin

SOIC versions of the LP2951.

LP2951 Versions Only

•

Error flag warns of output dropout

Logic-controlled electronic shutdown

Output programmable from 1.24 to 29V

Applications

•

Automotive Electronics

Voltage Reference

•

Avionics

Block Diagram and Pin Configurations

UNREGULATED DC

150 mA

MAX.

OUTPUT

FEEDBACK

INPUT

SENSE

182

–

5V TAP

kΩ

ERROR

330

FROM

AMPLIFIER

SHUT-

CMOS

kΩ

1.5 µF

DOWN

60 mV

kΩ

OR TTL

–

TO CMOS

OR TTL

ERROR

DETECTION

1.23 V

REF.

COMPARATOR

GROUND

LP2950 and LP2951 Block Diagram

(Pin Numbers Refer to LP2951)

INPUT

OUTPUT

SENSE

FEEDBACK

SHUTDOWN

GROUND

5V TAP

ERROR

OUTPUT

INPUT

GROUND

DIP and SO Packages

(BN and BM)

TO-92 Plastic Package Bottom View

(BZ)

See MIC2950 for a part with 1) higher output (150 mA), 2) transient protection (60V), and 3) reverse input protection to –20V)

February 1999

3-35

12 3 4 5 6 7...14

中文翻译

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与LP2951相关器件

型号	品牌	获取价格	描述	数据表
LP2951-01AJ	ETC	获取价格	Fixed & Adjustable Voltage Regulator
LP2951-02BJ	ETC	获取价格	Fixed & Adjustable Voltage Regulator
LP2951-02BM	MICREL	获取价格	100mA Low-Dropout Voltage Regulator
LP2951-02BM	MICROCHIP	获取价格	Fixed/Adjustable Positive LDO Regulator, 1.24V Min, 29V Max, 0.6V Dropout, BIPolar, PDSO8,
LP2951-02BMT&R	MICREL	获取价格	Fixed/Adjustable Positive LDO Regulator, 1.24V Min, 29V Max, 0.6V Dropout, BIPolar, PDSO8,
LP2951-02BMT&R	MICROCHIP	获取价格	Fixed/Adjustable Positive LDO Regulator, 1.24V Min, 29V Max, 0.6V Dropout, BIPolar, PDSO8,
LP2951-02BN	MICREL	获取价格	100mA Low-Dropout Voltage Regulator
LP2951-02BN	MICROCHIP	获取价格	Fixed/Adjustable Positive LDO Regulator, 1.24V Min, 29V Max, 0.6V Dropout, BIPolar, PDIP8,
LP2951-02YM	MICREL	获取价格	100mA Low-Dropout Voltage Regulator
LP2951-02YMTR	MICROCHIP	获取价格	FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.6V DROPOUT, PDSO8, LEAD FREE, SOIC-8

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