Datasheet > LP3986

LP3986

更新时间： 2024-02-11 23:50:17

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
14页	317K
描述
Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators in micro SMD Package

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LP3986 数据手册

May 2003

LP3986

Dual Micropower 150 mA Ultra Low-Dropout CMOS

Voltage Regulators in micro SMD Package

General Description

The LP3986 is a 150 mA dual low dropout regulator de-

signed for portable and wireless applications with demand-

ing performance and board space requirements.

Features

n Miniature 8-I/O micro SMD package

n Stable with 1µF ceramic and high quality tantalum

output capacitors

n Fast turn-on

n Two independent regulators

n Logic controlled enable

The LP3986 is stable with a small 1 µF 30% ceramic output

capacitor requiring smallest possible board space.

The LP3986’s performance is optimized for battery powered

systems to deliver ultra low noise, extremely low dropout

voltage and low quiescent current independent of load cur-

rent. Regulator ground current increases very slightly in

dropout, further prolonging the battery life. Optional external

bypass capacitor reduces the output noise further without

slowing down the load transient response. Fast start-up time

is achieved by utilizing a speed-up circuit that actively pre-

charges the bypass capacitor. Power supply rejection is

better than 60 dB at low frequencies and 55 dB at 10 kHz.

High power supply rejection is maintained at low input volt-

age levels common to battery operated circuits.

n Over current and thermal protection

Key Specifications

n Guaranteed 150 mA output current per regulator

n 1nA typical quiescent current when both regulators in

shutdown mode

n 60 mV typical dropout voltage at 150 mA output current

n 115 µA typical ground current

n 40 µV typical output noise

n 200 µs fast turn-on circuit

The LP3986 is available in a micro SMD package. Perfor-

mance is specified for a −40˚C to +125˚C temperature

range. For single LDO applications, please refer to the

LP3985 datasheet.

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

Applications

n CDMA cellular handsets

n GSM cellular handsets

n Portable information appliances

n Portable battery applications

Typical Application Circuit

20003401

DS200034

www.national.com

12 3 4 5 6 7...14

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与LP3986相关器件

型号	品牌	获取价格	描述	数据表
LP3986BL-2528	NSC	获取价格	Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators in micro SMD Package
LP3986BL-2528/NOPB	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8, 0.995 MM, MICRO, BUMP, SMD-8
LP3986BL-2818	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8, 0.995 MM, MICRO, BUMP, SMD-8
LP3986BL-2828	NSC	获取价格	Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators in micro SMD Package
LP3986BL-2828	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8, 0.995 MM, MICRO, BUMP, SMD-8
LP3986BL-285285	NSC	获取价格	Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators in micro SMD Package
LP3986BL-2929	NSC	获取价格	Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators in micro SMD Package
LP3986BL-2929	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8, 0.995 MM, MICRO, BUMP, SMD-8
LP3986BL-2929/NOPB	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8, 0.995 MM, MICRO, BUMP, SMD-8
LP3986BL-3028	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8, 0.995 MM, MICRO, BUMP, SMD-8

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