Datasheet > LP38841SX-1.2

LP38841SX-1.2

更新时间： 2024-09-25 22:10:27

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
10页	594K
描述
0.8A Ultra Low Dropout Linear Regulators Stable with Ceramic Output Capacitors

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LP38841SX-1.2 数据手册

December 2004

LP38841

0.8A Ultra Low Dropout Linear Regulators

Stable with Ceramic Output Capacitors

General Description

Features

n Ideal for conversion from 1.8V or 1.5V inputs

n Designed for use with low ESR ceramic capacitors

n 0.8V, 1.2V and 1.5V standard voltages available

The LP38841 is a high current, fast response regulator

which can maintain output voltage regulation with minimum

input to output voltage drop. Fabricated on a CMOS process,

the device operates from two input voltages: Vbias provides

voltage to drive the gate of the N-MOS power transistor,

while Vin is the input voltage which supplies power to the

load. The use of an external bias rail allows the part to

operate from ultra low Vin voltages. Unlike bipolar regula-

tors, the CMOS architecture consumes extremely low quies-

cent current at any output load current. The use of an

N-MOS power transistor results in wide bandwidth, yet mini-

mum external capacitance is required to maintain loop sta-

bility.

n Ultra low dropout voltage (75mV 0.8A typ)

n 1.5% initial output accuracy

n Load regulation of 0.1%/A (typical)

n 30nA quiescent current in shutdown (typical)

n Low ground pin current at all loads

n Over temperature/over current protection

n Available in 5 lead TO220 and TO263 packages

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

The fast transient response of these devices makes them

suitable for use in powering DSP, Microcontroller Core volt-

ages and Switch Mode Power Supply post regulators. The

parts are available in TO-220 and TO-263 packages.

Applications

n ASIC Power Supplies In:

- Desktops, Notebooks, and Graphics Cards, Servers

- Gaming Set Top Boxes, Printers and Copiers

n Server Core and I/O Supplies

Dropout Voltage: 75 mV (typ) 0.8A load current.

Quiescent Current: 30 mA (typ) at full load.

n DSP and FPGA Power Supplies

n SMPS Post-Regulator

Shutdown Current: 30 nA (typ) when S/D pin is low.

Precision Output Voltage: 1.5% room temperature accu-

racy.

Typical Application Circuit

20102801

* Minimum value required if Tantalum capacitor is used (see Application Hints).

DS201028

www.national.com

12 3 4 5 6 7...10

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与LP38841SX-1.2相关器件

型号	品牌	获取价格	描述	数据表
LP38841SX-1.2/NOPB	NSC	获取价格	IC VREG 1.2 V FIXED POSITIVE LDO REGULATOR, 0.205 V DROPOUT, PSSO5, TO-263, 5 PIN, Fixed P
LP38841SX-1.2/NOPB	TI	获取价格	具有使能功能的 800mA、低输入电压 (0.875V)、超低压降稳压器 \| KTT \|
LP38841SX-1.5	NSC	获取价格	0.8A Ultra Low Dropout Linear Regulators Stable with Ceramic Output Capacitors
LP38841SX-1.5	TI	获取价格	1.5V FIXED POSITIVE LDO REGULATOR, 0.205V DROPOUT, PSSO5, TO-263, 5 PIN
LP38841SX-1.5/NOPB	NSC	获取价格	IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 0.205 V DROPOUT, PSSO5, TO-263, 5 PIN, Fixed P
LP38841SX-1.5/NOPB	TI	获取价格	具有使能功能的 800mA、低输入电压 (0.875V)、超低压降稳压器 \| KTT \|
LP38841T-0.8	NSC	获取价格	0.8A Ultra Low Dropout Linear Regulators Stable with Ceramic Output Capacitors
LP38841T-0.8	ROCHESTER	获取价格	0.8V FIXED POSITIVE LDO REGULATOR, 0.205V DROPOUT, PSFM5, TO-220, 5 PIN
LP38841T-0.8/NOPB	ROCHESTER	获取价格	0.8V FIXED POSITIVE LDO REGULATOR, 0.205V DROPOUT, PSFM5, TO-220, 5 PIN
LP38841T-0.8/NOPB	NSC	获取价格	IC VREG 0.8 V FIXED POSITIVE LDO REGULATOR, 0.205 V DROPOUT, PSFM5, TO-220, 5 PIN, Fixed P

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