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AQ533

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	634K
描述
Ultra-Low Dropout 500mA Voltage Regulator

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AQ533

Ultra-Low Dropout

500mA Voltage Regulator

September 13, 2006

Product Specification

Revision 1.7

General Description

Applications

• Graphic cards

• PC motherboards

• Cell Phones

The AQ533 is an ultra-low dropout voltage

regulator capable of delivering 500 mA to the

load. It is adjustable and can set a precise

voltage from 1.22V to 12V with two external

resistors. The AQ533 meets all specifications

down to 1.22V output, unlike CMOS LDO’s which

loose performance with outputs below 2.25V.

• DVD video player

The enable pin provides a remote turn-off for low

power consumption. It draws virtually zero current

in shutdown mode and implements Sequential,

Features

• Low dropout voltage (350mV at 500 mA)

• Enable pin implements sequencing

• Reverse current protection

Ratiometric,

or

Simultaneous

sequencing

schemes. This also allows for a separate bias

connection from the pass transistor in order to

achieve ultra low dropout from VIN to VOUT.

Reverse current protection blocks current

flowing from VOUT to VIN when the AQ533 is

disabled. No current flows.

• Vout tolerance less than 1.5% over

temperature

• Featured in the very small SOT-23

package

To assure accuracy within 1.5% over

temperature, the heart of the AQ533 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.

• Stable with low cost 1µF capacitor

• Low ground current <100 µA

• Thermal protection with hysteresis

• Short circuit protection

• RoHS compliant available

Typical Application

www.acutechnology.com

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