Diodes AP3003 - Manual (Page 2)

150kHz 3A BUCK DC-DC CONVERTER AP3003
Data Sheet
2
Aug. 2008 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
Figure 2. Pin Configuration of AP3003 (Top View)
Pin Description
Pin Number Pin Name Function
1 V
IN
Unregulated input voltage
2 OUTPUT Switch driver output
3 GND Ground
4 FEEDBACK Feedback Pin. For fixed version, connect it to system output. For adjustable version,
connect it with an external resistor and capacitor feedback network to program the sys-
tem output voltage
5 ON/OFF The TTL logic compatible input to control the regulator on or off
Pin Configuration
T Package
(TO-220-5)
ON/OFF
FEEDBACK
GND
OUTPUT
V
IN
S Package
(TO-263-5)
ON/OFF
FEEDBACK
GND
OUTPUT
V
IN
5
4
3
2
1
5
4
3
2
1
Metal Tab GND Metal Tab GND