ap1509-s Diodes, Inc., ap1509-s Datasheet - Page 2

• Manufacturer Part Number: ap1509-s
• Description: 150khz, 2a Pwm Buck Dc/dc Converter
• Manufacturer: Diodes, Inc.

Pin Assignments
Block Diagram
AP1509 Rev. 2
FB
Output
SD
FB
Current
Source
V
bias
IN
(Top View)
1
2
3
4
SOP-8L
Reference
1.235V
+
_
Amp
8
7
6
5
Frequecy
compen-
Regulator
sation
GND
GND
GND
GND
2.5V
www.diodes.com
2 of 12
Comp
_
+
150KHz, 2A PWM BUCK DC/DC CONVERTER
150kHz
Start
OSC.
up
SD
Pin Descriptions
Output
Pre-driver
Name
GND
SD
V
FB
Comp
Comp
IN
Shutdown
200mV
Thermal
_
+
+
_
Operating voltage input
ON/OFF Shutdown
Switching output
Ground
Output voltage feedback control
220mV
Description
Switch
2A
©
FEBRUARY 2008
AP1509
Diodes Incorporated
Output
Gnd
V
IN