Datasheet > LP3989

LP3989

更新时间： 2024-11-02 17:00:51

品牌	Logo	应用领域
微源半导体 - LOWPOWER		/
页数	文件大小	规格书
8页	424K
描述
Shutdown,High PSRR

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LP3989 数据手册

Preliminary Datasheet

LP3989

600mA,Ultra-low noise, Small Package,

Ultra-Fast CMOS LDO Regulator

General Description

Features

The LP3989 is designed for portable RF and wireless

applications with demanding performance and space

requirements. The LP3989 performance is optimized

for battery-powered systems to deliver ultra low noise

and low quiescent current. Regulator ground current

increases only slightly in dropout, further prolonging

the battery life. The LP3989 also works with low-ESR

ceramic capacitors, reducing the amount of board

space necessary for power applications, critical in

hand-held wireless devices. The LP3989 consumes

less than 0.1µA in shutdown mode and has fast

turn-on time less than 50µs. The other features include

ultra low dropout voltage, high feedback accuracy,

current limiting protection, and high ripple rejection

ratio. It is available in the 5-lead of SOT23-5

packages.

 Ultra-Low-Noise for RF Application

 2V- 6V Input Voltage Range

 Low Dropout : 280mV @ 400mA

 600mA Output Current, 750mA Peak Current

 High PSRR: -68dB at 1KHz

 < 1uA Standby Current When Shutdown

 Available in SOT23-5 Package

 Ultra-Fast Response in Line/Load transient

 Current Limiting and Thermal Shutdown

Protection

Applications



Portable Media Players/MP3 players

Cellular and Smart mobile phone

LCD

DSC Sensor

Wireless Card

Order Information

Typical Application Circuit

LP3989 □ □ □ □

□

F: Pb-Free

Vin

Vout

LP3989AB5F

VIN

OUT

ADJ

Package Type

B5: SOT23-5

2.2uF

22pF

2.2uF

Chip Enable

GND

Output Type

A：Adjustable

Marking Information

Device

Marking

Package

SOT23-5

Shipping

3K/REEL

LP3989AB5F

LP3989-02

Dec.-2019

Email: marketing@lowpowersemi.com

www.lowpowersemi.com

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与LP3989相关器件

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