LP3981 datasheet(1/8 Pages) POWER

부품명	LP3981

상세설명	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator

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제조업체	POWER [Lowpower Semiconductor inc]

홈페이지	http://www.lowpowersemi.com

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Preliminary Datasheet

LP3981

LP3981 – 01 Ver. 1.1 Datasheet

Feb.-2008

Page 1 of 8

300mA,Ultra-low noise, Small Package

Ultra-Fast CMOS LDO Regulator

General Description

The LP3981 is designed for portable RF and

wireless applications with demanding performance

and space requirements. The LP3981 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 LP3981 also works with low-ESR

ceramic capacitors, reducing the amount of board

space necessary for power applications, critical in

hand-held wireless devices. The LP3981 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

SOT23-5 packages.

Ordering Information

LP3981 - □ □ □ □

□

F: Pb-Free

Package Type

B5: SOT23-5

Output Voltage Type

12: 1.2V

15: 1.5V

18: 1.8V

25: 2.5V

28: 2.8V

30: 3.0V

33: 3.3V

50: 5.0V

Typical Application Circuit

+

Vin

1

3

4

5

IN

SHDN

NC

OUT

Vout

+

1uF

Features

Ultra-Low-Noise for RF Application

2V- 6.5V Input Voltage Range

Low Dropout : 220mV @ 300mA

1.2V, 1.5V, 1.8V, 2.5V, 2.8V 3.0V and 3.3V Fixed

300mA Output Current, 550mA Peak Current

High PSSR:-73dB at 1KHz 

< 0.01uA Standby Current When Shutdown

Available in SOT23-5 Package 　

TTL-Logic-Controlled Shutdown Input

Ultra-Fast Response in Line/Load transient

Current Limiting and Thermal Shutdown

Protection

Quick start-up (typically 50uS)

Applications

Portable Media Players/MP3 players

Cellular and Smart mobile phone

LCD

DSC Sensor

Wireless Card

Pin Configurations

Marking Information

Please see website.

SOT-25(Top View)

유사한 부품 번호 - LP3981

제조업체	부품명	데이터시트	상세설명
National Semiconductor ...	LP3981	339Kb / 11P	Micropower, 300mA Ultra Low-Dropout CMOS Voltage
Texas Instruments	LP3981	1Mb / 21P	LP3981 Micropower, 300mA Ultra Low-Dropout CMOS Voltage Regulator
	LP3981	1Mb / 21P	LP3981 Micropower, 300mA Ultra Low-Dropout CMOS Voltage Regulator
	LP3981	1Mb / 21P	LP3981 Micropower, 300mA Ultra Low-Dropout CMOS Voltage Regulator
	LP3981	1Mb / 25P	Micropower, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator

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유사한 설명 - LP3981

제조업체	부품명	데이터시트	상세설명
Richtek Technology Corp...	RT9193	208Kb / 12P	300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator
Power IC Ltd.	PL0301	406Kb / 12P	300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator
Richtek Technology Corp...	RT9193	191Kb / 14P	300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator
Lowpower Semiconductor ...	LP3982	378Kb / 8P	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
Lowpower Semiconductor ...	LP3984	382Kb / 8P	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
Leshan Radio Company	LR9193	802Kb / 9P	300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator
Leshan Radio Company	LR9198	734Kb / 12P	300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator
Lowpower Semiconductor ...	LP3983S	511Kb / 8P	300mA,Ultra-low noise, Small Package Ultra-Fast CMOS LDO Regulator
SHANGHAI BELLING CO., L...	BL9193	911Kb / 14P	300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator
SHANGHAI BELLING CO., L...	BL9198	1Mb / 14P	300mA Ultra-low Noise, Ultra-Fast CMOS LDO Regulator

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LP3981 데이터시트(PDF) 1 Page - Lowpower Semiconductor inc

LP3981 데이터시트(HTML) 1 Page - Lowpower Semiconductor inc

유사한 부품 번호 - LP3981

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