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AQ1541

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ACUTECH		稳压器
页数	文件大小	规格书
10页	665K
描述
Low Dropout 1 Amp Voltage Regulator with Enable Function

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AQ1541

Low Dropout

1 Amp Voltage Regulator

with Enable Function

September 13, 2006

Product Specification

Revision 2.2

General Description

Applications

The AQ1541 is a low dropout three terminal

voltage regulator, offered in popular fixed options

or an adjustable version that can set a precise

voltage from 1.22V to 12V with two external

resistors.

• Graphic cards

• PC motherboards

• Switching power supply post-regulation

• Telecom equipment

• DVD video player

It drops into the footprint of the popular LM1117

SOT-223 and provides a true fourth pin

separated from the output tab. The extra pin

allows for an enable function that provides a

remote turn-off for low power consumption. It

draws virtually zero current in shutdown mode.

The Enable pin implements Sequential, Ratio-

metric, or Simultaneous sequencing schemes.

To assure accuracy within 1.5% over

temperature the heart of the AQ1541 is a self-

correcting AcuRef™ bandgap reference.

On-chip current limit and thermal shutdown with

hysteresis protects against any combination of

overload and ambient temperature that might

cause the junction temperature to exceed safe

limits.

Features

• Enable pin implements sequencing in

SOT223-3 footprint

• Vout tolerance 1.5% over temperature

• Eliminates expensive components

• Stable with low cost 1uF capacitor

• Low dropout voltage (1V at 1 Amp)

• Thermal protection with hysteresis

• Short circuit protection

• Offered with 1.8V, 2.5V, and 3.3V fixed or

adjustable output

• RoHS compliant available

The AQ1541 is featured in the new

SOT223 4-lead TetraPack^TMpackage.

Typical Application

www.acutechnology.com

AQ1541

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