AP1509-12V DIODES [Diodes Incorporated], AP1509-12V Datasheet - Page 3

• Manufacturer Part Number: AP1509-12V
• Description: 150KHz, 2A PWM BUCK DC/DC CONVERTER
• Manufacturer: DIODES [Diodes Incorporated]

Pin Descriptions
Functional Block Diagram
AP1509
Document number: DS31016 Rev. 4 - 2
Pin Name
FB
Output
GND
SD
V
FB
IN
Current
Source
bias
Operating voltage input
Switching output
Ground
Output voltage feedback control
ON/OFF Shutdown
Reference
1.235V
+
_
Amp
Description
Frequecy
compen-
Regulator
sation
2.5V
www.diodes.com
Comp
+
_
3 of 13
Start
150kH
150KHz, 2A PWM BUCK DC/DC CONVERTER
OSC.
up
SD
z
driver
Pre-
Comp
Comp
200mV
Shutdown
Thermal
_
+
+
_
220mV
Switch
2A
AP1509
© Diodes Incorporated
GND
Output
V
IN
June 2010