Datasheet > LP3990A

LP3990A

更新时间： 2024-04-09 19:00:29

品牌	Logo	应用领域
微源半导体 - LOWPOWER		/
页数	文件大小	规格书
6页	305K
描述
Shutdown,High PSRR

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LP3990A 数据手册

Preliminary Datasheet

LP3990A

300mA,Ultra-low noise, Small Package

Ultra-Fast CMOS LDO Regulator

General Description

Features

The LP3990A is designed for portable RF and wireless

applications with demanding performance and space

requirements. The LP3990A performance is optimized

for battery-powered systems to deliver ultra low noise

and low quiescent current. The LP3990A also works

with low-ESR ceramic capacitors, reducing the amount

of board space necessary for power applications,

critical in hand-held wireless devices. The LP3990A

consumes less than 1µA in shutdown mode and has

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

include ultra low dropout voltage, high output accuracy,

current limiting protection, and high ripple rejection

ratio. It is available in the 1mm × 1mm TDFN-4

packages.

 Ultra-thin Package

 2.5V- 5.5V Input Voltage Range

 Low Dropout : 240mV @ 300mA

 1.2V, 1.5V, 1.8V, 2.5V, 2.8V,3.0V,3.3V and 5V

Fixed

 300mA Output Current, 450mA Peak Current

 High PSRR:-75dB at 1KHz

 1uA Standby Current When Shutdown

 Available in 1mm×1mm TDFN-4 Package

 TTL-Logic-Controlled Shutdown Input

 Ultra-Fast Response in Line/Load transient

 Current Limiting and Thermal Shutdown

Protection

 Quick start-up (typically 50uS)

Order Information

Applications



Portable Media Players/MP3 players

Cellular and Smart mobile phone

LCD

DSC Sensor

Wireless Card

LP3990A

F: Pb-Free

Package Type

QV: TDFN-4(1*1)

Typical Application Circuit

Output Voltage Type

V_IN

V_OUT

12 : 1.2V

15 : 1.5V

18 : 1.8V

25 : 2.5V

28 : 2.8V

30 : 3.0V

33 : 3.3V

50 : 5.0V

OUT

C_IN

1μF

C_OUT

1μF

V_EN

2&5

GND

OFF

LP3990AXX

LP3990A-03

Sep.-2021

Email: marketing@lowpowersemi.com

www.lowpowersemi.com

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