Datasheet > LP2951

LP2951

更新时间： 2024-11-24 14:55:19

品牌	Logo	应用领域
美国微芯 - MICROCHIP		光电二极管输出元件调节器
页数	文件大小	规格书
30页	2354K
描述
The LP2950 and LP2951 are micropower voltage regulators with very low dropout voltage (typical

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LP2951 数据手册

LP2951

100 mA Low-Dropout Voltage Regulator

Features

General Description

• High Accuracy 5V, Guaranteed 100 mA Output

• Extremely Low Quiescent Current

• Low-Dropout Voltage

The LP2951 is micropower voltage regulators with very

low dropout voltage (typically 40 mV at light loads and

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

(75 μA typical). The quiescent current of the LP2951

increases only slightly in dropout, thus prolonging

battery life. This feature, among others, makes the

LP2951 ideally suited for use in battery-powered

systems.

• Extremely Tight Load and Line Regulation

• Very Low Temperature Coefficient

• Use as Regulator or Reference

• Needs Only 1 μF for Stability

• Current and Thermal Limiting

Available system functions, such as programmable

output voltage and logic-controlled shutdown, are

available as well.

• Error Flag Warns of Output Dropout

• Logic-Controlled Electronic Shutdown

• Output Programmable from 1.24V to 29V

Additional features available with the LP2951 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 5V output, or

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

external resistors.

Applications

• Automotive Electronics

• Voltage Reference

• Avionics

The LP2951 is available as either a -02 or -03 version.

The -02 and -03 versions are guaranteed for junction

temperatures from -40°C to +125°C; the -02 version

has a tighter output and reference voltage specification

range over temperature.

The LP2951 have a tight initial tolerance (0.5% typical),

a very low output voltage temperature coefficient which

allows use as a low-power voltage reference, and

extremely good load and line regulation (0.05%

typical). This greatly reduces the error in the overall

circuit, and is the result of careful design techniques

and process control.

Package Types

LP2951

DIP & SOIC

Top View

INPUT

OUTPUT

SENSE

FEEDBACK

SHUTDOWN

GROUND

5V TAP

ERROR

* See MIC2950 for a part with: 1) higher output

(150 mA), 2) transient protection (60V), and 3) reverse

input protection to –20V.

 2017 - 2022 Microchip Technology Inc. and its subsidiaries

DS20005736B-page 1

12 3 4 5 6 7...30

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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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