ICL8001G Datasheet, PDF (12/16 Pages) Infineon Technologies AG – Single-Stage Flyback And PFC Controller For LED Lighting Applications

Single-Stage Flyback and PFC Controller
ICL8001G
Electrical Characteristics
4.3.3
PWM Section
Parameter
Feedback Pull-Up Resistor
PWM-OP Gain
Offset for Voltage Ramp
Maximum on time in normal
operation
Symbol
R_FB
G_PWM
V_PWM
t_OnMax
Limit Values
Unit
min. typ.
max.
14
23
33
kΩ
3.25 3.3
3.35 -
0.63 0.7
0.77 V
22
30
41
µs
Test Condition
4.3.4
Current Sense
Parameter
Symbol
Peak current limitation in normal V_CSth
operation
Leading Edge Blanking time
t_LEB
Limit Values
Unit
min. typ.
max.
0.97 1.03 1.09 V
200
330
460
ns
Test Condition
4.3.5
Soft Start
Parameter
Symbol
Limit Values
Unit Test Condition
min. typ.
max.
Soft-Start time
t_SS
8.5
12
-
ms
soft-start time step
t_{SS_S1)}
-
3
-
ms
Internal regulation voltage at
V_SS11)
-
1.76 -
V
first step
Internal regulation voltage step V_{SS_S1)}
-
0.56 -
V
at soft start
1) _{The parameter is not subjected to production test - verified by design/characterization}
4.3.6
Foldback Point Correction
Parameter
Symbol
ZCV current first step threshold
ZCV current last step threshold
CS threshold minimum
I_{ZC_FS}
I_{ZC_LS}
V_CSMF
Limit Values
Unit
min. typ.
max.
0.35 0.5
0.621 mA
1.3
1.7
2.2
mA
-
0.66 -
V
Test Condition
I_zc=2.2mA, V_FB=3.8V
Version 1.0
12
May 6, 2010