Manual

AP1605
PWM/PFM DUAL-MODE STEP-DOWN SWITCHING
REGULATOR
AP1605 Rev. 2 2 of 8 FEBRUARY 2009
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Pin Assignments
1
2
3
4
8
7
6
5
FB
SW
Vcc
SW
CE
Vss
Vss
PVcc
( Top View )
SOP-8L
Pin Descriptions
Pin Name Pin No. Description
FB 1 Feedback pin
CE 2
Chip Enable:
H: Enable
L: Disable
Vcc 3
IC signal power supply pin, add a 10Ω resistor to PVcc and a 0.1µF
capacitor to GND.
PVcc 4 IC power supply pin
SW 5, 6
Switch Pin. Connect external inductor/diode here. Minimize trace
area at this pin to reduce EMI.
Vss 7, 8 GND Pin