Datasheet > LP3987

LP3987

更新时间： 2024-11-15 00:01:07

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
17页	530K
描述
Micropower micro SMD 150 mA Ultra Low-Dropout CMOS Voltage Regulators with sleep MODE

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LP3987 数据手册

February 2003

LP3987

Micropower micro SMD 150 mA Ultra Low-Dropout

CMOS Voltage Regulators with sleep MODE

General Description

Features

n Miniature 5-I/O micro SMD package

The LP3987 is a 150mA fixed output voltage regulator with

very low dropout voltage designed specially to meet require-

ments of battery-powered applications. The additional sleep

MODE feature will reduce current consumption during

standby operation to prolong the usage of battery.

n Stable with ceramic and high quality tantalum output

capacitors

n Logic controlled enable

n Thermal Shutdown and short-circuit current limit

Dropout Voltage: 100mV maximum dropout with 150mA

load.

Key Specifications

Shutdown: Less than 1µA quiescent current.

n 2.7 to 6.0V input range

Sleep Mode: Typically 14µA quiescent current during sleep

MODE to reduce battery consumption.

n Guaranteed 150 mA output current

n 1µA quiescent current on shutdown

n 100 mV maximum dropout with 150 mA load

n 50dB PSRR at 10KHz

Enhanced Stability: The LP3987 is stable with minimum

1µF 20% low ESR ceramic output capacitor as low as 5mΩ

and high quality tantalum capacitors.

n Sleep MODE features

The LP3987 is available in thin and thick 5 Bump micro SMD

package. Performance is specified for −40˚C to 125˚C.

n Over temperature & over current protection

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

operation

This device is available with output voltage options of 2.6V,

2.8V, & 2.85V. For other voltage options, please contact

National Semiconductor Corporation.

Applications

n CDMA cellular handsets

n Wideband CDMA cellular handsets

n GSM cellular handsets

n Portable information appliances

n µP/DSP Power Supplies

n Digital Cameras

n SRAM Backup

Typical Application Circuit

20022201

DS200222

www.national.com

12 3 4 5 6 7...17

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