Datasheet > LP2987

LP2987

更新时间： 2024-11-19 05:42:31

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
24页	562K
描述
Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset Delay; Low Noise Version Available (LP2988)

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LP2987 数据手册

February 2002

LP2987/LP2988

Micropower, 200 mA Ultra Low-Dropout Voltage

Regulator with Programmable Power-On Reset Delay;

Low Noise Version Available (LP2988)

General Description

The LP2987/8 are fixed-output 200 mA precision LDO volt-

age regulators with power-ON reset delay which can be

implemented using a single external capacitor.

Features

n Ultra low dropout voltage

n Power-ON reset delay requires only one component

n Bypass pin for reduced output noise (LP2988)

n Guaranteed continuous output current 200 mA

n Guaranteed peak output current 250 mA

n SO-8 and mini SO-8 surface mount packages

The LP2988 is specifically designed for noise-critical appli-

cations. A single external capacitor connected to the Bypass

pin reduces regulator output noise.

™

Using an optimized VIP (Vertically Integrated PNP) pro-

2 µA quiescent current when shutdown

cess, these regulators deliver superior performance:

n Low ground pin current at all loads

Dropout Voltage: 180 mV 200 mA load, and 1 mV 1 mA

load (typical).

n 0.5% output voltage accuracy (“A” grade)

n Wide supply voltage range (16V max)

n Overtemperature/overcurrent protection

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

Ground Pin Current: 1 mA 200 mA load, and 200 µA

10 mA load (typical).

Sleep Mode: The LP2987/8 draws less than 2 µA quiescent

current when shutdown pin is held low.

Applications

Error Flag/Reset: The error flag goes low when the output

drops approximately 5% below nominal. This pin also pro-

vides a power-ON reset signal if a capacitor is connected to

the DELAY pin.

n Cellular Phone

n Palmtop/Laptop Computer

n Camcorder, Personal Stereo, Camera

Precision Output: Standard product versions of the LP2987

and LP2988 are available with output voltages of 5.0V, 3.8V,

3.3V, 3.2V, 3.0V, or 2.8V, with guaranteed accuracy of 0.5%

(“A” grade) and 1% (standard grade) at room temperature.

Block Diagrams

10001701

10001702

™

VIP is a trademark of National Semiconductor Corporation.

DS100017

www.national.com

12 3 4 5 6 7...24

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与LP2987相关器件

型号	品牌	获取价格	描述	数据表
LP2987AILD-3.0	NSC	获取价格	IC VREG 3 V FIXED POSITIVE LDO REGULATOR, 0.35 V DROPOUT, PDSO8, LLP-8, Fixed Positive Sin
LP2987AILD-3.0/NOPB	NSC	获取价格	IC VREG 3 V FIXED POSITIVE LDO REGULATOR, 0.35 V DROPOUT, PDSO8, LLP-8, Fixed Positive Sin
LP2987AILD-3.0/NOPB	TI	获取价格	具有电源正常指示和使能功能的 200mA、16V、低压降稳压器 \| NGN \| 8 \| -
LP2987AILD-3.3	TI	获取价格	3.3V FIXED POSITIVE LDO REGULATOR, 0.35V DROPOUT, PDSO8, LLP-8
LP2987AILD-5.0	NSC	获取价格	IC VREG 5 V FIXED POSITIVE LDO REGULATOR, 0.35 V DROPOUT, PDSO8, LLP-8, Fixed Positive Sin
LP2987AILD-5.0/NOPB	NSC	获取价格	IC VREG 5 V FIXED POSITIVE LDO REGULATOR, 0.35 V DROPOUT, PDSO8, LLP-8, Fixed Positive Sin
LP2987AILD-5.0/NOPB	TI	获取价格	具有电源正常指示和使能功能的 200mA、16V、低压降稳压器 \| NGN \| 8 \| -
LP2987AILDX-3.0	ETC	获取价格	VOLT REGULATOR\|FIXED\|+3V\|BIPOLAR\|LLCC\|8PIN\|PLASTIC
LP2987AILDX-5.0/NOPB	NSC	获取价格	IC VREG 5 V FIXED POSITIVE LDO REGULATOR, 0.35 V DROPOUT, PDSO8, LLP-8, Fixed Positive Sin
LP2987AILDX-5.0/NOPB	TI	获取价格	具有电源正常指示和使能功能的 200mA、16V、低压降稳压器 \| NGN \| 8 \| -

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