LP3874-ADJ

更新时间： 2024-11-22 21:55:19

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器
页数	文件大小	规格书
15页	693K
描述
0.8A Fast Ultra Low Dropout Linear Regulators

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LP3874-ADJ 数据手册

July 2005

LP3874-ADJ

0.8A Fast Ultra Low Dropout Linear Regulators

General Description

Features

n Ultra low dropout voltage

n Low ground pin current

The LP3874-ADJ fast ultra low-dropout linear regulators op-

erate from a +2.5V to +7.0V input supply. These ultra low

dropout linear regulators respond very quickly to step

changes in load, which makes them suitable for low voltage

microprocessor applications. The LP3874-ADJ is developed

on a CMOS process which allows low quiescent current

operation independent of output load current. This CMOS

process also allows the LP3874-ADJ to operate under ex-

tremely low dropout conditions.

n Load regulation of 0.04%

n 10nA quiescent current in shutdown mode

n Guaranteed output current of 0.8A DC

n Available in TO-263, TO-220 and SOT-223 packages

n Minimum output capacitor requirements

n Overtemperature/overcurrent protection

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

Dropout Voltage: Ultra low dropout voltage; typically 24mV

at 80mA load current and 240mV at 0.8A load current.

Applications

Ground Pin Current: Typically 6mA at 0.8A load current.

n Microprocessor power supplies

n GTL, GTL+, BTL, and SSTL bus terminators

n Power supplies for DSPs

n SCSI terminator

Shutdown Mode: Typically 10nA quiescent current when

the shutdown pin is pulled low.

Adjustable Output Voltage: The output voltage may be

programmed via two external resistors.

n Post regulators

n High efficiency linear regulators

n Battery chargers

n Other battery powered applications

Typical Application Circuit

20074545

*See Application Hints

DS200745

www.national.com

12 3 4 5 6 7...15

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与LP3874-ADJ相关器件

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