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General Description

The APL5525/6 is a dual-channel regulator with reset function (specific voltage monitoring), and internal delay circuit, set to detect 3.9V or 4.2V. Maximum input voltage is 6V, output1 and output2 deliver up to 500mA. VOUT1 typical dropout voltage is 550mV at 500mA loading and VOUT2 typical dropout voltage is 630mV at 500mA loading. Design with an internal P-channel MOSFET pass transistor, the APL5525/6 maintains a low supply current. Other features include, thermal-shutdown protection, current limit protection to ensure specified output current. The APL5525/6 come in miniature SOP-8 and SOP-8-P packages.

Features

? Low Quiescent Current : 130μA (No load)

? Low Dropout Voltage :

VDROP1=550mV@500mA

VDROP2=630mV@500mA

? Fixed Output Voltage :

VOUT1=3.3V/500mA

VOUT2=2.5V/500mA

? Stable with 4.7μF Output Capacitor

? Stable with Aluminum, Tantalum or Ceramic

Capacitors

? Reverse Current Protection

? No Protection Diodes Needed

? Built in Thermal Protection

? Fast Transient Response

? Short Setting Time

? SOP-8, SOP-8-P with Thermal Pad Packages

? Adjustment-free Reset Detection Voltage :

3.9V or 4.2V typ

? Easy to Set Delay Time from Voltage

Detection to Reset Release

Applications

? CD-ROM drive.