LP3983 datasheet(1/8 Pages) POWER

No. de pieza	LP3983

Descripción Electrónicos	For BaseBand,300mA,Ultra-LowNoise Ultra-fast CMOS LDO Regrlator

PDF	8 Pages

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Fabricante Electrónico	POWER [Lowpower Semiconductor inc]

Página de inicio	http://www.lowpowersemi.com

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LP3983

LP3983-datasheet

Oct.-2005

1-1

For BaseBand,300mA,Ultra-LowNoise

Ultra-fast CMOS LDO Regrlator

General Description

The LP3983 is designed for portable RF and wireless

applications with demanding performance and space

requirements. The LP3983 performance is optimized for

battery-powered systems to deliver ultra low noise and

low quiescent current. A noise bypass pin is available

for further reduction of output noise. Regulator ground

current increases only slightly in dropout, further

prolonging the battery life. The LP3983 also works with

low-ESR ceramic capacitors, reducing the amount of

board space necessary for power applications, critical in

hand-held wireless devices. The LP3983 consumes

less than 0.01µA 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.

Available in the 5-lead of SOT-23-6 packages.

Pin Configurations

(SOT-23-6 )

Typical Application Circuit

R1

R2

Vin

Vout=1.25X(R1/R2+1)V

EN

3

Vout

6

SET

5

Vin

1

Bypass

4

LP3983AB6F

180K

3.5V

10nF

2.2uF

100K

100pF

2.2uF

Features

Ultra-Low-Noise for RF Application

2.5V- 6V Input Voltage Range

Low Dropout : 200mV @ 300mA

High PSSR:-70dB at 1KHz

< 0.01uA Standby Current When Shutdown

TTL-Logic-Controlled Shutdown Input

Custom Voltage Available

Ultra-Fast Response in Line/Load Transient

Quick Start-Up (Typically 50us)

Current Limiting and Thermal Shutdown Protection

Applications

PMP/PDA/MP3 players

Cellular and Mobile phone

RF Module

Sensor Module

Ordering Information

LP3983 -

□

□ □

□

F:PB-Free

Package Type

B6: SOT-23-6

Output Voltage:

A: Adjustable

Marking Information

Please see website.

Top View

Número de pieza similar - LP3983

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National Semiconductor ...	LP3983	166Kb / 10P	Micropower, Low Quiescent Current, CMOS Voltage Regulator in micro SMD Package
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