Ap1507, 150khz, 3a pwm buck dc/dc converter, Pin descriptions – Diodes AP1507 User Manual
Page 3: Functional block diagram
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AP1507
150KHz, 3A PWM BUCK DC/DC CONVERTER
AP1507
Document number: DS31067 Rev. 3 - 2
3 of 12
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
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