Datasheet > LP38841MR-ADJ

LP38841MR-ADJ

更新时间： 2024-09-26 02:54:47

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	256K
描述
0.8A Ultra Low Dropout Adjustable Linear Regulators Stable with Ceramic Output Capacitors

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LP38841MR-ADJ 数据手册

December 2006

LP38841-ADJ

0.8A Ultra Low Dropout Adjustable Linear Regulators

Stable with Ceramic Output Capacitors

General Description

Features

The LP38841-ADJ 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 regulators, the CMOS archi-

tecture consumes extremely low quiescent current at any

output load current. The use of an N-MOS power transistor

results in wide bandwidth, yet minimum external capacitance

is required to maintain loop stability.

Ideal for conversion from 1.8V or 1.5V inputs

■

Designed for use with low ESR ceramic capacitors

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

0.56V to 1.5V adjustable output range

Load regulation of 0.1%/A (typ)

30nA quiescent current in shutdown (typ)

Low ground pin current at all loads

Over temperature/over current protection

Available in 8 lead PSOP package

■

−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 the PSOP package.

UVLO disables output when V_BIAS< 3.8V

Applications

ASIC Power Supplies In:

- Desktops, Notebooks, and Graphics Cards, Servers

- Gaming Set Top Boxes, Printers and Copiers

■

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

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

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

Precision Reference Voltage: 1.5% room temperature ac-

curacy.

Server Core and I/O Supplies

■

DSP and FPGA Power Supplies

SMPS Post-Regulators

Typical Application Circuit

20117701

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

201177

www.national.com

12 3 4 5 6 7...10

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与LP38841MR-ADJ相关器件

型号	品牌	获取价格	描述	数据表
LP38841MR-ADJ/NOPB	TI	获取价格	0.8A Ultra Low Dropout Adjustable Linear Regulators Stable with Ceramic Output Capacitors
LP38841MRX-ADJ	NSC	获取价格	0.8A Ultra Low Dropout Adjustable Linear Regulators Stable with Ceramic Output Capacitors
LP38841MRX-ADJ/NOPB	TI	获取价格	0.8A Ultra Low Dropout Adjustable Linear Regulators Stable with Ceramic Output Capacitors
LP38841S-0.8	NSC	获取价格	0.8A Ultra Low Dropout Linear Regulators Stable with Ceramic Output Capacitors
LP38841S-0.8	TI	获取价格	0.8V FIXED POSITIVE LDO REGULATOR, 0.205V DROPOUT, PSSO5, TO-263, 5 PIN
LP38841S-0.8/NOPB	NSC	获取价格	IC VREG 0.8 V FIXED POSITIVE LDO REGULATOR, 0.205 V DROPOUT, PSSO5, TO-263, 5 PIN, Fixed P
LP38841S-0.8/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 \|
LP38841S-1.2	NSC	获取价格	0.8A Ultra Low Dropout Linear Regulators Stable with Ceramic Output Capacitors
LP38841S-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 \|
LP38841S-1.5	NSC	获取价格	0.8A Ultra Low Dropout Linear Regulators Stable with Ceramic Output Capacitors

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