LP2989IM-1.8 Datasheet

IC型號：
LP2989IM-1.8
PDF描述：
Positive Fixed Voltage Regulator
文件大小：
205.77KB
PDF頁數(shù)：
9頁
芯片廠家：
ETC

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LP2989LV Micropower 500 mA Low Noise Low Dropout Regulator for Output Voltages

Designed for Use with Very Low ESR Output Capacitors

July 2000

LP2989LV

Micropower 500 mA Low Noise Low Dropout Regulator

for Applications with Output Voltages

Designed for Use with Very Low ESR Output Capacitors

General Description

The LP2989LV is a 500 mA fixed-output voltage regulator

designed to provide high performance and low noise in appli-

cations requiring output voltages

2V.

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

an external 10 nF capacitor to the bypass pin.

Using an optimized VIP

鈩?/div>

(Vertically Integrated PNP) pro-

cess, the LP2989LV delivers superior performance:

Ground Pin Current:

Typically 3 mA

500 mA load, and

110 碌A(chǔ)

100 碌A(chǔ) load.

Sleep Mode:

The LP2989LV draws less than 0.8 碌A(chǔ) 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.

Precision Output:

Guaranteed output voltage accuracy is

0.75% (鈥淎鈥?grade) and 1.25% (standard grade) at room tem-

perature.

Features

Ultra low dropout voltage

Guaranteed 500 mA continuous output current

Very low output noise with external capacitor

SO-8 surface mount package

0.8 碌A(chǔ) quiescent current when shutdown

Low ground pin current at all loads

0.75% output voltage accuracy (鈥淎鈥?grade)

High peak current capability (800 mA typical)

Wide supply voltage range (16V max)

Overtemperature/overcurrent protection

鈭?0藲C to +125藲C junction temperature range

Applications

Notebook/Desktop PC

PDA/Palmtop Computer

Wireless Communication Terminals

SMPS Post-Regulator

Block Diagram

DS101357-1

VIP

鈩?/div>

is a trademark of National Semiconductor Corporation.

漏 2000 National Semiconductor Corporation

DS101357

www.national.com

制造商
National Semiconductor (TI)
最大輸入電壓
16 V
輸出電壓
1.8 V
輸出電流
0.8 A (Typ)
負(fù)載調(diào)節(jié)
0.4 % Vnom
輸出端數(shù)量
1
輸出類型
Fixed
最大工作溫度
+ 125 C
安裝風(fēng)格
SMD/SMT
封裝 / 箱體
SOIC-8 Narrow
線路調(diào)整率
0.014 % / V
最小工作溫度
- 40 C
封裝
Tube
工廠包裝數(shù)量
95
電壓調(diào)節(jié)準(zhǔn)確度
+/- 1.25 %

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LP2989IM-1.8 Datasheet

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