Preliminary Datasheet
Off-line Primary Side Regulation Controller for Dimmable LED Driver
AP1681
Typical Application
EE16
L=1.43mH
VREC
115T
11T
VBUS
~
~
+
120Vac
60Hz
47k
47nF
22nF
Dimmer
470k
560k
1A/600V
EE16
GND
ZCD
3N60
L=4.5mH
+
100pF
630V
6.8
F
GD
350V
47
MULT
CS
3.3k
1nF
2R
VCC COMP
INV
AP1661
560k
680k 680k 680k
16k
330nF
0.47
F
BAV20
SR
220
F
3A/150V
35V
VOUT
AP1681 LED Application:
330k 330k
BAV20
47k
95T
0.16×3
14T
=0.3
19T
+
2.2nF
630V
Dimmable LED Driver
220k
68k
27k
=0.4
φ
φ
TIW
Input: 120Vac/60Hz
18W Power
10k
FR105
270k
EF20
0.47
F
L=2.54mH
Output: 8 LEDs, 26VLOAD
5.0mA to 550mA
32 VOPEN
VCC
DIM
RD
FB
100
4N60
OUT
100k
Y2
1.5nF 3kV
0.47
F
CS
1
F
16k
3.0k
GND
RI
1.3R
AP1681
51k 100k
Figure 17. Typical Application of AP1681
Jul. 2011 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
11
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
