Owner manual

AP1501
150KHz, 3A PWM BUCK DC/DC CONVERTER
AP1501 Rev. 11 3 of 12 JANUARY 2009
www.diodes.com © Diodes Incorporated
Current
Source
bias
1.235V
Reference
2.5V
Regulator
150kHz
OSC.
Start
up
+
+
_
+
_
Thermal
Shutdown
Pre-driver
Comp
Comp
Gnd
Output
V
IN
SD
FB
220mV200mV
3A
Switch
+
_
_
Amp
Comp
Frequency
compen-
sation
Absolute Maximum Ratings
Symbol Parameter Rating Unit
ESD MM Machine Model ESD Protection 400 V
V
CC
Supply Voltage +45 V
V
SD
ON/OFF Pin input Voltage -0.3 to +40 V
V
FB
Feedback Pin Voltage -0.3 to +40 V
V
OUT
Output Voltage to Ground -1 V
P
D
Power Dissipation Internally limited W
T
ST
Storage Temperature -65 to +150
o
C
T
J
Operating Junction Temperature -20 to +125
o
C
T
MJ
Maximum Junction Temperature 150
o
C
Block Diagram