Datasheet > MIC2951-4.8BM

MIC2951-4.8BM

更新时间： 2024-11-21 22:09:03

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器
页数	文件大小	规格书
14页	147K
描述
150mA Low-Dropout Voltage Regulator

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中文翻译

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数据手册

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MIC2951-4.8BM 数据手册

MIC2950/2951

Micrel

MIC2950/2951

150mA Low-Dropout Voltage Regulator

General Description

Features

The MIC2950 and MIC2951 are “bulletproof” micropower

voltage regulators with very low dropout voltage (typically

40mV at light loads and 250mV at 100mA), and very low

quiescent current. Like their predecessors, the LP2950 and

LP2951, the quiescent current of the MIC2950/MIC2951

increases only slightly in dropout, thus prolonging battery life.

The MIC2950/MIC2951 are pin for pin compatible with the

LP2950/LP2951, but offer lower dropout, lower quiescent

current,reversebattery,andautomotiveloaddumpprotection.

•

Highaccuracy3.3,4.85,or5V,guaranteed150mAoutput

Extremely low quiescent current

Low-dropout voltage

Extremely tight load and line regulation

Very low temperature coefficient

Use as regulator or reference

Needs only 1.5µF for stability

Current and thermal limiting

UnregulatedDCinputcanwithstand–20Vreversebattery

The key additional features and protection offered include

higher output current (150mA), positive transient protection

for up to 60V (load dump), and the ability to survive an

unregulated input voltage transient of –20V below ground

(reverse battery).

and +60V positive transients

•

Error flag warns of output dropout (MIC2951)

Logic-controlled electronic shutdown (MIC2951)

Output programmable from 1.24V to 29V (MIC2951)

The plastic DIP and SOIC versions offer additional system

functions such as programmable output voltage and logic

controlled shutdown. The 3-pin TO-92 MIC2950 is pin-

compatible with the older 5V regulators.

These system functions also include an error flag output that

warns of a low output voltage, which is often due to failing

batteries on the input. This may also be used as a power-on

reset. A logic-compatible shutdown input is also available

which enables the regulator to be switched on and off. This

partmayalsobepin-strappedfora5Voutput,orprogrammed

from 1.24 V to 29 V with the use of two external resistors.

Block Diagram

Unregulated

DC Supply

OUT

5V/150mA

Output

SNS

Error

Amp.

182k

330k

TAP

SHDN

60k

TTL/CMOS

Control Logic

Input

60mV

Error Detection

Comparator

TTL/CMOS

Compatible

Error Output

ERR

GND

1.5µF

1.23V

REF.

MIC2951-0x

February 1999

3-49

12 3 4 5 6 7...14

中文翻译

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与MIC2951-4.8BM相关器件

型号	品牌	获取价格	描述	数据表
MIC2954	MICREL	获取价格	250mA Low-Dropout Regulator
MIC2954	MICROCHIP	获取价格	The MIC2954 is a "bulletproof", efficient voltage regulator with very low dropout voltag
MIC2954_07	MICREL	获取价格	250mA Low-Dropout Regulator
MIC2954-02BS	MICREL	获取价格	250mA Low-Dropout Regulator
MIC2954-02BS TR	MICROCHIP	获取价格	IC REG LINEAR 5V 250MA SOT223
MIC2954-02BT	MICREL	获取价格	250mA Low-Dropout Regulator
MIC2954-02BZ	MICREL	获取价格	250mA Low-Dropout Regulator
MIC2954-02BZAP	MICREL	获取价格	Fixed Positive LDO Regulator, 5V, 0.6V Dropout, BIPolar, PBCY3, TO-92, 3 PIN
MIC2954-02BZT&R	MICREL	获取价格	暂无描述
MIC2954-02BZ-TR	MICROCHIP	获取价格	IC REG LINEAR 5V 250MA TO92-3

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