Datasheet > LP2989LV

LP2989LV

更新时间： 2024-11-26 05:00:11

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器电容器
页数	文件大小	规格书
11页	685K
描述
Micropower 500 mA Low Noise Low Dropout Regulator for Applications with Output Voltages < 2V Designed for Use with Very Low ESR Output Capacitors

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LP2989LV 数据手册

February 2005

LP2989LV

Micropower 500 mA Low Noise Low Dropout Regulator

for Applications with Output Voltages 2V

Designed for Use with Very Low ESR Output Capacitors

General Description

Features

n Ultra low dropout voltage

The LP2989LV is a 500 mA fixed-output voltage regulator

designed to provide high performance and low noise in

n Guaranteed 500 mA continuous output current

n Very low output noise with external capacitor

n SO-8, Mini SO-8, 8 Lead LLP surface mount packages

applications requiring output voltages 2V.

Output noise can be reduced to 18µV (typical) by connecting

an external 10 nF capacitor to the bypass pin.

0.8 µA quiescent current when shutdown

™

Using an optimized VIP (Vertically Integrated PNP) pro-

n Low ground pin current at all loads

cess, the LP2989LV delivers superior performance:

n 0.75% output voltage accuracy (“A” grade)

n High peak current capability (800 mA typical)

n Wide supply voltage range (16V max)

n Overtemperature/overcurrent protection

n −40˚C to +125˚C junction temperature range

Ground Pin Current: Typically 3 mA 500 mA load, and

110 µA 100 µA load.

Sleep Mode: The LP2989LV draws less than 0.8 µA quies-

cent current when shutdown pin is pulled low.

Error Flag: The built-in error flag goes low when the output

drops approximately 5% below nominal.

Applications

Precision Output: Guaranteed output voltage accuracy is

0.75% (“A” grade) and 1.25% (standard grade) at room

temperature.

n Notebook/Desktop PC

n PDA/Palmtop Computer

n Wireless Communication Terminals

n SMPS Post-Regulator

For output voltages ≥ 2V, see LP2989 datasheet.

Block Diagram

10135701

™

VIP is a trademark of National Semiconductor Corporation.

DS101357

www.national.com

12 3 4 5 6 7...11

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与LP2989LV相关器件

型号	品牌	获取价格	描述	数据表
LP2989LV_15	TI	获取价格	Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With Ceramic Output C
LP298AIM-2.8	NSC	获取价格	Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset De
LP298IM-1.8	NSC	获取价格	Micropower 500 mA Low Noise Low Dropout Regulator for Applications with Output Voltages <
LP2992	NSC	获取价格	Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and LLP Packages Designe
LP2992	TI	获取价格	具有使能功能的 250mA、16V、低压降稳压器
LP2992_15	TI	获取价格	Micropower 250-mA Low-Noise Ultralow-Dropout Regulator in SOT-23
LP2992AILD-1.5	NSC	获取价格	Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and LLP Packages Designe
LP2992AILD-1.5	TI	获取价格	LP2992 Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and WSON Packages
LP2992AILD-1.5/NOPB	NSC	获取价格	IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 0.85 V DROPOUT, PDSO6, LLP-6, Fixed Positive S
LP2992AILD-1.5/NOPB	TI	获取价格	LP2992 Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and WSON Packages

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