ap3902p-g1 BCD Semiconductor Manufacturing Limited, ap3902p-g1 Datasheet - Page 2

• Manufacturer Part Number: ap3902p-g1
• Description: Low Power Pwm Switch For Off-line Smps
• Manufacturer: BCD Semiconductor Manufacturing Limited

Pin Configuration
Pin Description
Sep. 2008 Rev. 1.0
LOW POWER PWM SWITCH FOR OFF-LINE SMPS
Pin Number
5, 6
2,
3
4
7
8
1
Pin Name
GND
VCC
VA
VS
NC
B
C
Figure 2. Pin Configuration of AP3902 (Top View)
This pin is used for short circuit protection, and it will be pulled to low level when
short circuit happens at the load terminal
It is used for line voltage compensation, and PWM uses this pin to terminate the out-
put switch conduction
The power supply of the IC and it is also used for the feedback control
It is internally connected with the base terminal of internal NPN transistor
It is internally connected with the collector terminal of internal NPN transistor
No connection to IC
Supply ground
VCC
VA
VS
B
P Package
1
2
3
4
(
DIP-8)
2
8
7
6
5
BCD Semiconductor Manufacturing Limited
Function
GND
NC
C
C
Data Sheet
AP3902