AP3703 View Datasheet(PDF) - BCD Semiconductor
Part Name
Description
MFG CO.
'AP3703' PDF : 11 Pages View PDF
Preliminary Datasheet
LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER
Functional Block Diagram
AP3703
5
FB
0.1V
COMP
UVLO
pfm
OVP
pro
&
OCkP
Tonsec
Detector
Tons
VCC
3
Regulator
&
Bias
UVLO
4
CS
4.0V
EA
Tons
S&H
V+
Vea
COMP
V+
pfm_d
Vea
COMP
0.5V
pfm
LEB Delay
430ns
t
pfm_d
COMP
0.46V
Tons
VDD
I
3.75V COMP
0.75*I
CV_ctrl
RQ
S
RQ
CC_ctrl
S
pfm
1
Driver
OUT
2
GND
Figure 3. Functional Block Diagram of AP3703
Feb. 2009 Rev. 1.0
BCD Semiconductor Manufacturing Limited
3
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