AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
Pin Assignments
( Top View )
CE 1
Vcc 2
FB 3
PGND 4
SOP-8L
8 GND
7 GND
6 LX
5 LX
Pin Descriptions
Pin Name
CE
Vcc
FB
PGND
LX
GND
Pin Number
1
2
3
4
5, 6
7, 8
Description
Chip Enable:
H: Enable
L: Disable
IC signal power supply pin
Feedback pin
Power MOSFET GND
Switch Pin. Connect external inductor/diode here. Minimize
trace area at this pin to reduce EMI.
GND Pin
AP1609 Rev. 2
2 of 9
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FEBRUARY 2009
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