User guide

Preliminary Datasheet
Off-line Primary Side Regulation Controller for Dimmable LED Driver AP1681
Jul. 2011 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
6
Electrical Characteristics
V
CC
=15V, T
A
=25°C, unless otherwise specified.
Parameter Symbol Conditions Min Typ Max Unit
UVLO Section
Start-up Threshold V
TH
(ST) 16.5 19 21.5
Minimal Operating Voltage V
OPR
(Min) After turn on 7.2 9 10.8
V
Standby Current Section
Start-up Current I
ST
V
CC
=V
TH
(ST)-0.5V,
Before start up
1.7 10
Operating Current I
CC
Static 700 900 1100
µA
Drive Output Section
Output High Level Voltage V
OH
I
GD-SOURCE
=20mA
V
CC
=12V
8 V
Output Low Level Voltage V
OL
I
GD-SINK
=20mA
V
CC
=12V
1 V
Output Voltage Rise Time t
R
C
L
=1nF 120 220 320 ns
Output Voltage Fall Time t
F
C
L
=1nF 30 50 90 ns
Output Clamp Voltage V
O-CLAMP
I
GD-SOURCE
=5mA
V
CC
=20V
11 13 15 V
UVLO Saturation Voltage V
UVLO
V
CC
=0 to V
CC–ON
I
SINK
=10mA
1 V
Maximum Switch On-time t
ONP_MAX
16.5
µs
DIM Input Section
Voltage Gain to RI
∆V
RI
/∆V
DIM
-1.2 -1.1 -1.0
Internal Source Current 11 20 35
µA
Reload Threshold 0.8 1 1.25 V
RD and RI Section
RD Pin Voltage V
RD
1.3 1.5 1.75 V
Maximum RD Current 150
µA
Maximum RI Current 250
µA
Current Sense Section
Current Sense Voltage V
CS
450 500 560 mV
Maximum CS Current V
DIM
=0 120
µA
Leading Edge Blanking 600 ns