AP5002_09 Datasheet, PDF (2/10 Pages) Diodes Incorporated – PWM CONTROL 2A STEP-DOWN CONVERTER

AP5002
PWM CONTROL 2A STEP-DOWN CONVERTER
Pin Assignments
( Top View )
FB 1
8 ^Vss
EN ²
Comp 3
AP5002
7 Vss
6 Output
VCC 4
5 _Output
SOP-8L
Pin Descriptions
Name
FB
EN
Comp
VCC
Output
VSS
Pin
1
2
3
4
5、6
7、8
Description
Feedback pin
Power-off pin
H: Normal operation
(Step-down operation)
L: Step-down operation stopped
(All circuits deactivated)
Compensation pin
IC power supply pin
Switch Pin. Connect external
inductor/diode here. Minimize trace
area at this pin to reduce EMI.
GND Pin
Block Diagram
Output
Oscillation
Circuit
Reference Voltage Source
Vcc
Thermal
Shutdown
PWM-Switched
Control Circuit
100uA
V_EN
+
FB
-
Vss
EN
Comp
AP5002 Rev. 8
2 of 10
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FEBRUARY 2009
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