Datasheet > MIC2951

MIC2951

更新时间： 2024-11-22 10:57:11

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器
页数	文件大小	规格书
20页	1056K
描述
150mA Low-Dropout Voltage Regulator

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MIC2951 数据手册

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 pro-longing battery

life. The MIC2950/MIC2951 are pin for pin compatible with

the LP2950/LP2951, but offer lower dropout, lower

quiescent current, reverse battery, and automotive load

dump protection.

• High accuracy 3.3, 4.85, or 5V, guaranteed 150mA

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 1.5µF for stability

• Current and thermal limiting

• Unregulated DC input can withstand –20V reverse

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).

battery and +60V positive transients

MIC2951 Version Only

• Error flag warns of output dropout

• Logic-controlled electronic shutdown

• Output programmable from 1.24 to 29V

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.

Applications

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 part may also be pin-strapped for a 5 V output, or

programmed from 1.24 V to 29 V with the use of two

external resistors.

• Automotive electronics

• Voltage reference

• Avionics

• Cellular telephones

• Battery powered equipment

• SMPS post-regulator

• High efficiency linear power supplies

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

___________________________________________________________________________________________________________

Block Diagram

* MIC2950 Discontinuance September 2007.

MM8 is a registered trademark of Micrel, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-021610

February 2010

12 3 4 5 6 7...20

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与MIC2951相关器件

型号	品牌	获取价格	描述	数据表
MIC29510	MICREL	获取价格	5A Fast-Response LDO Regulator Preliminary Information
MIC29510	MICROCHIP	获取价格	The MIC29510 and MIC29512 are high-current, high-accuracy, low-dropout voltage regulator
MIC29510_06	MICREL	获取价格	5A Fast-Response LDO Regulator
MIC2951-02BM	MICREL	获取价格	150mA Low-Dropout Voltage Regulator
MIC2951-02BN	MICROCHIP	获取价格	Fixed Positive LDO Regulator, 5V, 0.6V Dropout, BIPolar, PDIP8, PLASTIC, DIP-8
MIC2951-02BN	MICREL	获取价格	150mA Low-Dropout Voltage Regulator
MIC2951-02BN	ROCHESTER	获取价格	4.94V Min, 5.06V Max, 0.6V Dropout, BIPolar, PDIP8, PLASTIC, DIP-8
MIC2951-02YM	MICREL	获取价格	150mA Low-Dropout Voltage Regulator
MIC2951-02YM	MICROCHIP	获取价格	FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.6V DROPOUT, PDSO8
MIC2951-02YMTR	MICREL	获取价格	5V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PDSO8, SOIC-8

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