LP3878-ADJ

更新时间： 2024-11-14 04:44:07

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
13页	792K
描述
Micropower 800mA Low Noise(Ceramic Stable) Adjustable Voltage Regulator for 1V to 5V Applications

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LP3878-ADJ 数据手册

May 2005

LP3878-ADJ

Micropower 800mA Low Noise "Ceramic Stable"

Adjustable Voltage Regulator for 1V to 5V Applications

General Description

Features

n 1.0V to 5.5V output

The LP3878-ADJ is an 800 mA adjustable output voltage

regulator designed to provide high performance and low

noise in applications requiring output voltages as low as

1.0V.

n Designed for use with low ESR ceramic capacitors

n Very low output noise

n 8 Lead PSOP and LLP surface mount package

™

Using an optimized VIP (Vertically Integrated PNP) pro-

10 µA quiescent current in shutdown

cess, the LP3878-ADJ delivers superior performance:

n Low ground pin current at all loads

Ground Pin Current: Typically 5.5 mA 800 mA load, and

n Over-temperature/over-current protection

n -40˚C to +125˚C operating junction temperature range

180 µA 100 µA load.

Low Power Shutdown: The LP3878-ADJ draws less than

10 µA quiescent current when shutdown pin is pulled low.

Applications

Precision Output: Guaranteed output voltage accuracy is

1% at room temperature.

n ASIC Power Supplies In:

- Desktops, Notebooks and Graphic Cards

- Set Top Boxes, Printers and Copiers

n DSP and FPGA Power Supplies

n SMPS Post-Regulator

Low Noise: Broadband output noise is only 18 µV (typical)

with 10 nF bypass capacitor.

n Medical Instrumentation

Basic Application Circuit

20120903

*Capacitance values shown are minimum required to assure stability. Larger output capacitor provides improved dynamic response. Output capacitor must

meet ESR requirements (see Application Information).

**The Shutdown pin must be actively terminated (see Application Information). Tie to INPUT (Pin 4) if not used.

™

VIP is a trademark of National Semiconductor Corporation.

DS201209

www.national.com

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