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What is AP1501A?

This electronic component, produced by the manufacturer "Diodes", performs the same function as "5A PWM BUCK DC/DC CONVERTER".


AP1501A Datasheet PDF - Diodes

Part Number AP1501A
Description 5A PWM BUCK DC/DC CONVERTER
Manufacturers Diodes 
Logo Diodes Logo 


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AP1501A
150KHz, 5A PWM BUCK DC/DC CONVERTER
Features
General Description
Output voltage: 3.3V, 5V, 12V and adjustable output
version
Adjustable version output voltage range, 1.23V to
37V+4%
150Khz +15% fixed switching frequency
Voltage mode non-synchronous PWM control
Thermal-shutdown and current-limit protection
ON/OFF shutdown control input
Operating voltage can be up to 40V
Output load current: 5A
Low power standby mode
Built-in switching transistor on chip
Lead Free packages: TO263-5L and TO220-5L(R)
TO263-5L and TO220-5L(R): Available in “Green”
Molding Compound (No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
The AP1501A series are monolithic ICs that are designed for a
step-down DC/DC converter, and possess the ability to drive a
5A load without additional transistor component. Due to reducing
the number of external component, the board space can be
saved easily. The external shutdown function can be controlled
by logic level and then come into standby mode. The internal
compensation makes feedback control have good line and load
regulation without external design. Regarding protected function,
thermal shutdown is to prevent over temperature operating from
damage, and current limit is against over current operating of the
output switch. The AP1501A series operates at a switching
frequency of 150Khz thus allowing smaller sized filter
components than what would be needed with lower frequency
switching regulators. Other features include a guaranteed
+4% tolerance on output voltage under specified input voltage
and output load conditions, and +15% on the oscillator frequency.
The output version includes fixed 3.3V, 5V, 12V, and an
adjustable type. The packages are available in a standard 5-lead
TO263 and TO220 packages.
Applications
Simple High-efficiency step-down regulator
On-card switching regulators
Positive to negative converter
Typical Application Circuit
(1) Fixed Type Circuit
12V
DC Input
Cin
Capacitor
FB
4
1
Vin
AP1501A
-33
2
Output
53
SD Gnd
L1
18uH
Inductor
D1
Schottky
Diode
3.3V/5A
Output Load
Co
Capacitor
AP1501A Rev. 10
DS31191
1 of 14
www.diodes.com
SEPTEMBER 2009
© Diodes Incorporated

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AP1501A equivalent
AP1501A
150KHz, 5A PWM BUCK DC/DC CONVERTER
Absolute Maximum Ratings
Symbol
ESD MM
VCC
VSD
VFB
VOUT
PD
TST
TJ
Parameter
Machine Model ESD Protection
Supply Voltage
ON/OFF Pin input voltage
Feedback Pin voltage
Output voltage to Ground
Power dissipation
Storage temperature
Operating Junction Temperature
Recommended Operating Conditions
Rating
400
+45
-0.3 to +40
-0.3 to +40
-1
Internally limited
-65 to +150
-20 to +125
Unit
V
V
V
V
V
W
oC
oC
Symbol
VOP
TA
Parameter
Operating voltage
Operating Ambient Temperature
Rating
4.5 to 40
-20 to 85
Units
V
oC
AP1501A Rev. 10
DS31191
5 of 14
www.diodes.com
SEPTEMBER 2009
© Diodes Incorporated


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AP1501A datasheet


1. 5A, PWM Buck DC/DC Converter

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