Diodes AP1681 - Manual (Page 7)

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