500mA Regulator + Reset IC
Copyright ANPEC Electronics Corp.
Rev. A.4 - Sep., 2002 www.anpec.com.tw1
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.
APL5505/6/7
Features General Description
The APL5505/6/7 is micropower, low noise , low drop-
out regulators with a reset function (regulator input
(APL5505) or specific voltage(APL5506/7) monitoring),
and internal delay circuit, set to detect 3.9V or 4.2V.
Operate from 3V to 6V input voltage and deliver up to
500mA. Typical output noise is just 180uVRMS with an
external 0.01uF bypass capacitor connected in BP
pin and the typical dropout voltage is only 300mV at
500mA loading. Design with an internal P-channel
MOSFET pass transistor, the APL5505/6/7 maintains
a low supply current, independent of the load current
and dropout voltage. Other features include reverse
current protection, thermal-shutdown protection, cur-
rent limit protection to ensure specified output current
and controlled short-circuit current. The APL5505/6/
7 regulators come in miniature SOP-8, TSSOP-8 and
MSOP-8 packages.
Applications
• CD-ROM drive.
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••
• Low Quiescent Current : 120uA (No load)
••
••
• Low Dropout Voltage : 300mV (VOUT=3.3V@
500mA)
••
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• Fixed Output Voltage : 1.3V,1.4V,1.5V,1.6V,
1.7V,1.8V,1.9V, 2.0V,2.1V,2.2V,2.3V,2.4V,
2.5V,2.6V,2.7V, 2.8V,2.9V,3.0V,3.1V,3.2V,
3.3V,3.4V.
••
••
• Stable with 4.7uF Output Capacitor
••
••
• Stable with Aluminum , Tantalum or Ceramic
Capacitors .
••
••
• Reverse Current Protection
••
••
• No Protection Diodes Needed
••
••
• Built in Thermal Protection
••
••
• Built in Current Limit Protection
••
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• Controlled Short Circuit Current : 50mA
••
••
• Fast transient Response
••
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• Short Setting Time
••
••
• SOP-8,TSSOP-8 and MSOP-8 Packages.
••
••
• Adjustment-free Reset Detection Voltage :
3.9V or 4.2V typ.
• •
• •
• Easy to Set Delay Time from Voltage
Detection to Reset Release.
• •
• •
• Reset and Reset output
Pin Configuration
RESET
RESET GND
1
2
3
8
6
4
7
5
CONT
VIN
Bypass
VOUT
Cd
SOP-8 Top View
APL5505
SOP-8 Top View
APL5506
VDET
RESET GND
1
2
3
8
6
4
7
5
CONT
VIN
Bypass
VOUT
Cd
VDET
RESET GND
1
2
3
8
6
4
7
5
CONT
VIN
Bypass
VOUT
Cd
SOP-8 Top View
APL5507