Diodes AP1507 - Manual (Page 3)

AP1507
150KHz, 3A PWM BUCK DC/DC CONVERTER
AP1507
Document number: DS31067 Rev. 3 - 2
3 of 12
www.diodes.com
May 2012
© Diodes Incorporated
Pin Descriptions
Pin Number Pin Name Description
1 V
IN
Operating Voltage Input
2 Output Switching Output
3 GND Ground
4 FB Output Voltage Feedback Control
5 SD ON / OFF Shutdown
Functional Block Diagram
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
220mV 200mV
3A
Switch
+
_
_ Amp
Comp
Frequency
Compen-
sation