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ICE3BR4765JZ Datasheet(PDF) 21 Page - Infineon Technologies AG

Part No. ICE3BR4765JZ
Description  Off-Line SMPS Current Mode Controller
Download  32 Pages
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Maker  INFINEON [Infineon Technologies AG]
Homepage  http://www.infineon.com
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 21 page
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Version 2.1
21
30 Aug 2011
ICE3BR4765JZ
Electrical Characteristics
4.3.2
Internal Voltage Reference
4.3.3
PWM Section
4.3.4
Soft Start time
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
Trimmed Reference Voltage
VREF
4.90
5.00
5.10
V
measured at pin FB
IFB = 0
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
Fixed Oscillator Frequency
fOSC1
56.5
65.0
73.5
kHz
fOSC2
59.8
65.0
70.2
kHz
Tj = 25°C
Frequency Jittering Range
fjitter
-
±
2.6
-
kHz
Tj = 25°C
Frequency Jittering period
Tjitter
-
4.0
-
ms
Tj = 25°C
Max. Duty Cycle
Dmax
0.70
0.75
0.80
Min. Duty Cycle
Dmin
0
-
-
VFB < 0.3V
PWM-OP Gain
A
V
3.1
3.3
3.5
Voltage Ramp Offset
V
Offset-Ramp
-
0.67
-
V
VFB Operating Range Min Level VFBmin
-
0.5
-
V
VFB Operating Range Max level VFBmax
-
-
4.3
V
CS=1V, limited by
Comparator C41)
1)
The parameter is not subjected to production test - verified by design/characterization
FB Pull-Up Resistor
RFB
9
15.4
22
kW
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
Soft Start time
tSS
-
20.0
-
ms




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