LP3878

更新时间： 2024-11-14 11:38:55

品牌	Logo	应用领域
美国国家半导体 - NSC		调节器电容器
页数	文件大小	规格书
11页	637K
描述
Micropower 800mA Low Noise Ceramic Stable Voltage Regulator for Low Voltage Applications Designed for Use with Very Low ESR Output Capacitors

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LP3878 数据手册

November 2004

LP3878

Micropower 800mA Low Noise "Ceramic Stable" Voltage

Regulator for Low Voltage Applications

Designed for Use with Very Low ESR Output Capacitors

General Description

Features

n Standard output voltage: 1.00V

The LP3878 is a 800 mA fixed-output voltage regulator

designed to provide high performance and low noise in

applications requiring output voltages between 1.0V and

1.2V.

n Custom voltages available from 1.0V to 1.2V (50 mV

increments)

n Input voltage: 2.2 to 6.0V

Output noise can be reduced to 18µV (typical) by connecting

an external 10 nF capacitor to the bypass pin.

n 1% initial output accuracy

n Guaranteed 800 mA continuous output current

n Designed for use with low ESR ceramic capacitors

n Very low output noise with external capacitor

n Sense option improves load regulation

n 8 Lead LLP surface mount package

™

Using an optimized VIP (Vertically Integrated PNP) pro-

cess, the LP3878 delivers superior performance:

Ground Pin Current: Typically 5 mA 800 mA load, and

180 µA 100 µA load.

2.0 µA quiescent current in shutdown

n Low ground pin current at all loads

Sleep Mode: The LP3878 draws less than 2.0 µA quiescent

current when shutdown pin is pulled low.

Precision Output: Guaranteed output voltage accuracy is

1% at room temperature.

n High peak current capability (1200 mA typical)

n Overtemperature/overcurrent protection

n 0˚C to +125˚C junction temperature range

Applications

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

Basic Application Circuit

20086803

*Capacitance values shown are minimum required to assure stability, but may be increased without limit. Larger output capacitor provides improved dynamic

response. Output capacitor must meet ESR requirements (see Application Hints).

**Shutdown must be actively terminated (see App. Hints). Tie to INPUT (Pin4) if not used.

™

VIP is a trademark of National Semiconductor Corporation.

DS200868

www.national.com

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与LP3878相关器件

型号	品牌	获取价格	描述	数据表
LP3878-ADJ	NSC	获取价格	Micropower 800mA Low Noise(Ceramic Stable) Adjustable Voltage Regulator for 1V to 5V Appli
LP3878-ADJ	TI	获取价格	Micropower 800-mA Low-Noise
LP3878-ADJ_15	TI	获取价格	Micropower 800-mA Low-Noise
LP3878MR-ADJ	NSC	获取价格	Micropower 800mA Low Noise(Ceramic Stable) Adjustable Voltage Regulator for 1V to 5V Appli
LP3878MR-ADJ	TI	获取价格	Micropower 800-mA Low-Noise
LP3878MR-ADJ/NOPB	TI	获取价格	Micropower 800-mA Low-Noise
LP3878MR-ADJ/NOPB	NSC	获取价格	IC VREG 1 V-5.5 V ADJUSTABLE POSITIVE REGULATOR, PDSO8, PLASTIC, SOP-8, Adjustable Positiv
LP3878MRX-ADJ	NSC	获取价格	Micropower 800mA Low Noise(Ceramic Stable) Adjustable Voltage Regulator for 1V to 5V Appli
LP3878MRX-ADJ/NOPB	TI	获取价格	Micropower 800-mA Low-Noise
LP3878MRX-ADJ/NOPB	NSC	获取价格	IC VREG 1 V-5.5 V ADJUSTABLE POSITIVE REGULATOR, PDSO8, PLASTIC, SOP-8, Adjustable Positiv

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