Datasheet > LP3986BLX2828

LP3986BLX2828

更新时间： 2024-02-19 11:00:08

品牌	Logo	应用领域
其他 - ETC		稳压器
页数	文件大小	规格书
12页	273K
描述
Positive Fixed Voltage Regulator

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LP3986BLX2828 数据手册

November 2001

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

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

capacitor requiring smallest possible board space.

n Two independent regulators

n Logic controlled enable

n Over current and thermal protection

n Optional noise reduction capacitor

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 lower input

voltage levels common to battery operated circuits.

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

The LP3986 is available in micro SMD package. Perfor-

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

For single LDO applications, please refer to the LP3985

datasheet.

n 200 µs fast turn-on circuit

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

Optional Noise Bypass Capacitor.

DS200034

www.national.com

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与LP3986BLX2828相关器件

型号	品牌	获取价格	描述	数据表
LP3986BLX-2828	NSC	获取价格	Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators in micro SMD Package
LP3986BLX-2828	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8, 0.995 MM, MICRO, BUMP, SMD-8
LP3986BLX-2828/NOPB	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8, 0.995 MM, MICRO, BUMP, SMD-8
LP3986BLX285285	NSC	获取价格	Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators in micro SMD Package
LP3986BLX2929	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8, MICRO, BUMP, SMD-8
LP3986BLX-2929	NSC	获取价格	Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators in micro SMD Package
LP3986BLX-2929	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8, 0.995 MM, MICRO, BUMP, SMD-8
LP3986BLX-2929/NOPB	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8, 0.995 MM, MICRO, BUMP, SMD-8
LP3986BLX-3028	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8
LP3986BLX-3028/NOPB	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PBGA8

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