Datasheet > LP2978_09

LP2978_09

更新时间： 2024-11-23 05:42:31

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器电容器
页数	文件大小	规格书
8页	277K
描述
Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors

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LP2978_09 数据手册

OBSOLETE

April 23, 2009

LP2978

Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout

Regulator

Designed for Use with Very Low ESR Output Capacitors

General Description

Features

The LP2978 is a 50 mA, fixed-output voltage regulator de-

signed to provide ultra low-dropout and low noise in battery

powered applications.

Ultra low dropout voltage

■

Smallest possible size (SOT-23 Package)

Requires minimum external components

Using an optimized VIP^®(Vertically Integrated PNP) process,

the LP2978 delivers unequalled performance in all specifica-

tions critical to battery-powered designs:

Stable with low-ESR output capacitor

<1 µA quiescent current when shut down

Low ground pin current at all loads

Dropout Voltage: Typically 120 mV @ 50 mA load, and

7 mV @ 1 mA load.

Output voltage accuracy 1% (A Grade)

High peak current capability

Ground Pin Current: Typically 350 µA @ 50 mA load, and

75 µA @ 1 mA load.

Wide supply voltage range (16V max)

■

Enhanced Stability: The LP2978 is stable with output ca-

pacitor ESR as low as 5 mΩ, which allows the use of ceramic

capacitors on the output.

Low Z_OUT: 0.3Ω typical (10 Hz to 1 MHz)

Overtemperature/overcurrent protection

−40°C to +125°C junction temperature range

Custom voltages available

■

Sleep Mode: Less than 1 µA quiescent current when ON/OFF

pin is pulled low.

Smallest Possible Size: SOT-23 package uses absolute

minimum board space.

Applications

Cellular Phone

Precision Output: 1% tolerance output voltages available (A

grade).

■

Palmtop/Laptop Computer

Low Noise: By adding a 10 nF bypass capacitor, output noise

can be reduced to 30 µV (typical).

Personal Digital Assistant (PDA)

Camcorder, Personal Stereo, Camera

■

Block Diagram

10093501

VIP^®is a registered trademark of National Semiconductor Corporation.

100935

www.national.com

100935 Version 6 Revision 2 Print Date/Time: 2009/04/23 16:08:18

12 3 4 5 6 7 8

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与LP2978_09相关器件

型号	品牌	获取价格	描述	数据表
LP2978AIM5-3.8	NSC	获取价格	Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout Regulator
LP2978AIM5-3.8/NOPB	TI	获取价格	3.8V FIXED POSITIVE LDO REGULATOR, 0.225V DROPOUT, PDSO5, SOT-23, SOP-5
LP2978AIM5X-3.8	NSC	获取价格	Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout Regulator
LP2978AIM5X-3.8/NOPB	TI	获取价格	3.8V FIXED POSITIVE LDO REGULATOR, 0.225V DROPOUT, PDSO5, SOT-23, SOP-5
LP2978IM5-3.8	NSC	获取价格	Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout Regulator
LP2978IM5X-3.8	NSC	获取价格	Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout Regulator
LP2978IM5X-3.8/NOPB	TI	获取价格	3.8V FIXED POSITIVE LDO REGULATOR, 0.225V DROPOUT, PDSO5, SOT-23, SOP-5
LP2979IBP-2828	TI	获取价格	暂无描述
LP2979IBPX-2828	TI	获取价格	2.8V FIXED POSITIVE LDO REGULATOR, 0.32V DROPOUT, PBGA8, MICRO, SMD-8
LP2980	NSC	获取价格	Micropower 50 mA Ultra Low-Dropout Regulator

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