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ICE2AS01 Datasheet(PDF) 17 Page - Infineon Technologies AG

Part No. ICE2AS01
Description  PWM-FF IC
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Maker  INFINEON [Infineon Technologies AG]
Homepage  http://www.infineon.com
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ICE2AS01/G
ICE2BS01/G
Electrical Characteristics
Version 2.0
17
1 Feb 2002
4.3.4
Protection Unit
4.3.5
Current Limiting
Frequency Ratio f
osc1/fosc2
ICE2AS01/G
4.5
4.65
4.9
Frequency Ratio f
osc3/fosc4
ICE2BS01/G
3.18
3.35
3.53
Max Duty Cycle
Dmax
0.67
0.72
0.77
Min Duty Cycle
D
min
0-
-
V
FB < 0V
PWM-OP Gain
A
V
3.45
3.65
3.85
Max. Level of Voltage Ramp
V
Max-Ramp
-0.85
-
V
V
FB Operating Range Min Level
V
FBmin
0.3
--V
V
FB Operating Range Max level
V
FBmax
--
4.6
V
Feedback Resistance
R
FB
3.0
3.7
4.9
k
Soft-Start Resistance
R
Soft-Start
42
50
62
k
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
Over Load & Open Loop
Detection Limit
V
FB2
4.65
4.8
4.95
V
V
SoftS > 5.5V
Activation Limit of Overload &
Open Loop Detection
V
SoftS1
5.15
5.3
5.46
V
V
FB > 5V
Deactivation Limit of
Overvoltage Detection
V
SoftS2
3.88
4.0
4.12
V
V
FB > 5V
V
CC > 17.5V
Overvoltage Detection Limit
V
VCC1
16
16.5
17.2
V
V
SoftS < 3.8V
V
FB > 5V
Latched Thermal Shutdown
T
jSD
130
140
150
°C
guaranteed by design
Spike Blanking
t
Spike
-5
-
µs
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
Peak Current Limitation (incl.
Propagation Delay Time)
(see Figure 7)
V
csth
0.95
1.00
1.05
V
dV
sense / dt = 0.6V/µs
Leading Edge Blanking
t
LEB
-220
-
ns




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