F3 PWM controller
ICE3BS03LJG
Electrical Characteristics
Version 2.0 21 6 Dec 2007
4.3.5 Control Unit
Note: The trend of all the voltage levels in the Control Unit is the same regarding the deviation except V
VCCOVP
and V
VCCPD
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Clamped V
BL
voltage during
Normal Operating Mode
V
BLclmp
0.85 0.90 0.95 V V
FB
= 4V
Blanking time voltage limit for
Comparator C3
V
BKC3
3.85 4.00 4.15 V
Over Load & Open Loop Detection
Limit for Comparator C4
V
FBC4
3.85 4.00 4.15 V
Active Burst Mode Level for
Comparator C5
V
FBC5
1.12 1.23 1.34 V
Active Burst Mode Level for
Comparator C6a
V
FBC6a
3.35 3.50 3.65 V After Active Burst
Mode is entered
Active Burst Mode Level for
Comparator C6b
V
FBC6b
2.88 3.00 3.12 V After Active Burst
Mode is entered
Overvoltage Detection Limit V
VCCOVP
24.5 25.5 26.5 V
Latch Enable level at BL pin V
LE
0.17 0.25 0.33 V > 30µs
Charging current at BL pin I
BK
9.1 13.0 16.9 µA Charge starts after the
built-in 20ms blanking
time elapsed
Latched Thermal Shutdown
1)
1)
The parameter is not subjected to production test - verified by design/characterization. The thermal shut down
temperature refers to the junction temperature of the controller.
T
jSD
130 140 150 °C
Built-in Blanking Time for
Overload Protection or enter
Active Burst Mode
t
BK
- 20 - ms without external
capacitor at BL pin
Inhibit Time for Latch Enable
function
during Start up
t
IHLE
- 1.0 - ms After IC turns on
Spike Blanking
Time before Latch off
or Auto Restart Protection
t
Spike
-30-µs
Power Down Reset for
Latched Mode
V
VCCPD
5.2 6.23 7.8 V After Latched Off Mode
is entered
