Diodes AP1680 - Manual (Page 3)

LOW-POWER OFF-LINE PRIMARY SIDE REGULATION CONTROLLER AP1680
Preliminary Datasheet
3
BCD Semiconductor Manufacturing Limited Apr. 2011 Rev. 1. 0
Regulator
&
Bias
Tonsec
Detector
0.1V
4.0V
pfm
Tons
COMP
EA
UVLO
CV_ctrl pfm
Driver
R Q
S
R Q
S
CC_ctrl
3
1
2, 5
4
6
OCkP
Peak Current Control & LEB
Constant Current Control
Tons
Constant Voltage Control
Functional Block Diagram
Figure 3. Functional Block Diagram of AP1680
OUT
GND
FB
CS
VCC