Datasheet > LP3981

LP3981

更新时间： 2024-11-16 17:01:27

品牌	Logo	应用领域
微源半导体 - LOWPOWER		/
页数	文件大小	规格书
17页	1255K
描述
Shutdown,High PSRR

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数据手册

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LP3981 数据手册

Preliminary Datasheet

LP3981

300mA Output,Low noise,Low-Dropout

CMOS Linear Regulator

General Description

Features

The LP3981 series low-dropout, low-power regulators

offer a fast start-up and excellent line and load

transient responses. A low ground current while at no

load with chips enabled makes the devices attractive

for battery-operate power systems. The LP3981 series

also provides an active pull-down circuit to quickly

discharge output load. Other features include short

current limit, thermal protection and a low current

consume shut-down mode.

 2.5V~5.5V Input Voltage Range

 Low Dropout: 260mV @ 300mA

 300mA Output Current, 500mA Peak Current

 High PSRR: -63dB at 1KHz

 <0.1uA Standby Current In Shutdown Mode

 TTL-Logic-Controlled Shutdown Input

 Ultra-Fast Response in Line/Load transient

 Current Limit and Thermal Shutdown Protection

Applications

The LP3981 is available in SOT23-5 / SOT23 /

DFN-4(1mm*1mm) / DFN-6(2mm*2mm) packages.

 Portable Media Players/MP3 players

 Cellular and Smart mobile phone

 LCD

Order Information

 DSC Sensor

LP3981

 Wireless Card

F: Pb-Free

Package Type

B3 : SOT23

Typical Application Circuit

B5 : SOT23-5

VIN

VOUT

QV : TDFN-4(1mm*1mm)

OUT

(FB)

1uF

R_UP

1uF

0.8V

(EN)

Output Voltage

R_DN

: Voltage Adjstable

GND

12 : 1.2V

13 : 1.3V

15 : 1.5V

18 : 1.8V

25 : 2.5V

28 : 2.8V

30 : 3.0V

33 : 3.3V

LP3981-05

Jul.-2022

Email: marketing@lowpowersemi.com

www.lowpowersemi.com

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