APL5538 Datasheet, PDF (1/17 Pages) Anpec Electronics Coropration – Dual Channel 300mA Regulator + Reset IC

APL5538
Dual Channel 300mA Regulator + Reset IC
Features
General Description
• Low Quiescent Current : 110µA (No load)
• Low Dropout Voltage :
VDROP1=350mV@300mA
VDROP2=350mV@300mA
• Fixed Output Voltage :
VOUT1=3.3V/300mA
VOUT2=3.3V/300mA
• Stable with 2.2µF Output Capacitor
• Stable with Aluminum, Tantalum or Ceramic
Capacitors
• 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
The APL5538 is a dual-channel regulator with reset
function (specific voltage monitoring), and internal de-
lay circuit, set to detect 3.9V or 4.2V. Maximum in-
put voltage is 6V, output1 and output2 deliver up to
300mA. VOUT1 typical dropout voltage is 350mV at
300mA loading and VOUT2 typical dropout voltage is
350mV at 300mA loading. Design with an internal P-
channel MOSFET pass transistor, the APL5538 main-
tains a low supply current. Other features include,
thermal-shutdown protection, current limit protection
to ensure specified output current. The APL5538 come
in miniature SOP-8 and SOP-8-P packages.
Pinouts
SOP-8 Top View
Cd
1
8
RESET
V DET
V IN
2
7
3
6
4
5
CONT
GND
V OUT2
V OUT1
Applications
• CD-ROM drive.
SOP-8-P Top View
Cd
1
RESET
2
V DET
3
V IN
4
8
CONT
7
GND
6
V OUT2
5
V OUT1
APL5538
= Thermal Pad
(connected to GND plane for better heat
dissipation)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
1
Rev. A.6 - Jul., 2006
www.anpec.com.tw