AP1520(2007) データシートの表示（PDF） - Diodes Incorporated.
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AP1520 Datasheet PDF : 8 Pages
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AP1520
PWM CONTROL 2A STEP-DOWN CONVERTER
Pin Assignments
( Top View )
FB 1
EN 2
OCSET 3
VCC 4
AP1520
SOP-8L
8 Vss
7 Vss
6 Output
5 Output
Pin Descriptions
Pin Pin
Name No.
Description
FB 1 Feedback pin
Power-off pin
H: Normal operation
EN 2 (Step-down operation)
L: Step-down operation stopped
(All circuits deactivated)
OCSET
3
Add an external resistor to set max
output current
VCC 4 IC power supply pin
Switch Pin. Connect external
Output 5, 6 inductor/diode here. Minimize trace
area at this pin to reduce EMI
VSS 7, 8 GND Pin
Block Diagram
Vcc
Output
Oscillation
Circuit
Reference Voltage
Source with Soft Start
Thermal
Shutdown
PWM-Switched
+
Control Circuit
-
FB
VEN
100uA
Vss
EN
OCSET
AP1520 Rev. 1
2 of 8
www.diodes.com
JANUARY 2007
© Diodes Incorporated
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