AP1609 Diodes, Inc., AP1609 Datasheet - Page 2

• Manufacturer Part Number: AP1609
• Description: Pwm/pfm Dual Mode Step-up Dc/dc Converter
• Manufacturer: Diodes, Inc.

Pin Assignments
Block Diagram
AP1609 Rev. 1
CE
FB
PGND
Vcc
CE
FB
1
2
3
4
Vref with
CE
AP1609
SOP-8L
+
-
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
8
7
6
5
Compensation
PWM/PFM
Controller
GND
GND
LX
LX
www.diodes.com
Phase
2 of 8
PGND
Name
Pin Descriptions
GND
Pin
V
+
CE
FB
LX
-
cc
Ramp Wave
Generator,
Comparator
OSC
Number
PWM
5, 6
7, 8
Pin
1
2
3
4
inductor/diode here. Minimize
Switch Pin. Connect external
IC signal power supply pin
trace area at this pin to
Buffer,
Power MOSFET GND
Driver
Feedback pin
GND
Description
reduce EMI.
GND Pin
Chip Enable:
L: Disable
H: Enable
Vcc
©
JANUARY 2007
AP1609
PGND
Diodes Incorporated
LX