CoolSET™-F3
ICE3B0365JG/ICE3B0565JG
Version 2.0 17 14 Nov 2006
4.3.3 PWM Section
4.3.4 Control Unit
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Fixed Oscillator Frequency f
OSC3
58 67 76 kHz
f
OSC4
62 67 74.5 kHz T
j
= 25°C
Frequency Jittering Range f
delta
-±2.7-kHzT
j
= 25°C
Max. Duty Cycle D
max
0.70 0.75 0.80
Min. Duty Cycle D
min
0- - V
FB
< 0.3V
PWM-OP Gain A
V
3.0 3.2 3.4
Max. Level of Voltage Ramp V
Max-Ramp
-0.6-V
V
FB
Operating Range Min Level V
FBmin
-0.5-V
V
FB
Operating Range Max level V
FBmax
- - 4.3 V CS=1V limited by
Comparator C4
1)
1)
The parameter is not subjected to production test - verified by design/characterization
Feedback Pull-Up Resistor R
FB
91422kΩ
Soft-Start Pull-Up Resistor R
SoftS
30 45 62 kΩ
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Deactivation Level for SoftS
Comparator C7 by C2
V
SoftSC2
2.98 3.10 3.22 V V
FB
= 5V
Clamped V
SoftS
Voltage during
Burst Mode
V
SoftSclmp_bm
2.88 3.00 3.12 V
Activation Limit of
Comparator C3
V
SoftSC3
3.85 4.00 4.15 V V
FB
= 5V
SoftS Startup Current I
SoftSstart
-0.9-mAV
SoftS
= 0V
Over Load & Open Loop
Detection Limit for
Comparator C4
V
FBC4
4.33 4.50 4.67 V V
SoftS
= 4.5V
Active Burst Mode Level for
Comparator C5
V
FBC5
1.23 1.35 1.43 V V
SoftS
= 4.5V
Active Burst Mode Level for
Comparator C6a
V
FBC6a
3.48 3.61 3.76 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
19.5 20.5 21.5 V V
FB
= 5V, V
SoftS
= 3V
Thermal Shutdown
1)
1)
The parameter is not subjected to production test - verified by design/characterization
T
jSD
130 140 150 °C
Spike Blanking t
Spike
-8.0-µs
