Preliminary Datasheet
Off-line Primary Side Regulation Controller for Dimmable LED Driver
AP1681
Electrical Characteristics (Continued)
V
CC
=15V, T
A
=25°C, unless otherwise specified.
Parameter
Feedback Input Section
CV Feedback Threshold
FB Pin Input Leakage
Current
Acceleration Start
Threshold
Over Voltage Protection
Symbol
V
FB-CV
I
FB
Conditions
Min
3.0
Typ
4.0
2
1.75
8
Max
5.0
3.0
2.15
9.5
Unit
V
µA
V
V
V
FB
=4V
1.0
1.35
V
FB-OVP
6.5
Over Temperature Protection Section
Shutdown Temperature
Temperature Hysteresis
140
20
o
o
C
C
Typical Performance Characteristics
19.0
10.0
18.8
Minimal Operating Voltage (V)
Start-up Voltage (V)
9.5
18.6
18.4
9.0
18.2
18.0
-40
-20
0
20
40
60
o
80
100
120
8.5
-40
-20
0
20
40
60
o
80
100
120
Ambient Temperature ( C)
Ambient Temperature ( C)
Figure 4. Start-up Voltage vs. Ambient Temperature
Figure 5. Minimal Operating Voltage vs.
Ambient Temperature
Jul. 2011
Rev. 1. 2
7
BCD Semiconductor Manufacturing Limited
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
