LP3986 datasheet(1/13 Pages) NSC

部件名	LP3986

功能描述	Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators in micro SMD Package

PDF	13 Pages

Scroll/Zoom	100%

制造商	NSC [National Semiconductor (TI)]

网页	http://www.national.com

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1 / 13 page

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.

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.

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.

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

n

Over current and thermal protection

Key Specifications

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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

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40 µV typical output noise

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200 µs fast turn-on circuit

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−40˚C to +125˚C junction temperature

Applications

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CDMA cellular handsets

n

GSM cellular handsets

n

Portable information appliances

n

Portable battery applications

Typical Application Circuit

20003401

May 2003

DS200034

www.national.com

类似零件编号 - LP3986

制造商	部件名	数据表	功能描述
Texas Instruments	LP3986	1Mb / 18P	Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators
Lowpower Semiconductor ...	LP3986	679Kb / 6P	300mA,Ultra-low Noise LDO Regulator
Texas Instruments	LP3986	578Kb / 18P	LP3986 Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators in DSBGA Package REVISED FEBRUARY 2013
Lowpower Semiconductor ...	LP3986H	514Kb / 6P	600mA,Ultra-low Noise LDO Regulator
Lowpower Semiconductor ...	LP3986HBF	514Kb / 6P	600mA,Ultra-low Noise LDO Regulator

More results

类似说明 - LP3986

制造商	部件名	数据表	功能描述
National Semiconductor ...	LP2967	612Kb / 17P	Dual Micropower 150 mA Low-Dropout Regulator in micro SMD Package
National Semiconductor ...	LP3987	533Kb / 17P	Micropower micro SMD 150 mA Ultra Low-Dropout CMOS Voltage Regulators with sleep MODE
Texas Instruments	LP3986	996Kb / 18P	LP3986 Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators in DSBGA Package
	LP2967	1Mb / 20P	Dual Micropower 150 mA Low-Dropout Regulator in micro SMD Package
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	LP3985	1Mb / 33P	Micropower, 150-mA Low-Noise Ultra-Low-Dropout CMOS Voltage Regulator
	LP3986	1Mb / 18P	Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage Regulators
	LP3987	1Mb / 21P	Micropower DSBGA 150-mA Ultra Low-Dropout CMOS Voltage Regulator
	LP3988	1Mb / 25P	Micropower, 150-mA Ultra-Low-Dropout CMOS Voltage Regulator
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