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VIPER35 Datasheet(PDF) 12 Page - STMicroelectronics

Part # VIPER35
Description  Quasi-resonant high performance off line high voltage converter
PDF  44 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VIPER35 Datasheet(HTML) 12 Page - STMicroelectronics

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Electrical ratings
VIPer35
12/44
DocID026980 Rev 4
Overvoltage protection
VOVP
Overvoltage
threshold
3.8
4.2
4.6
V
tSTROBE
Strobe time
2.2
µs
Oscillator section
FOSClim
Internal frequency
limit
VIPER35L
122
136
150
kHz
VIPER35H
200
225
250
kHz
FSTARTER
Starter frequency
VFB = 1 V
VZCD < VZCDTth
t < tSU
1/4
FOSClim
kHz
VFB =1 V
VZCD < VZCDTth
t > tSU
1/8
FOSClim
kHz
Brown-out protection
VBRth
Brown-out threshold
Voltage falling
0.41
0.45
0.49
A
VBRHyst
Voltage hysteresis
above VBRth
40
50
60
mV
IBRHyst
Current hysteresis
7
12
µA
VBRclamp
Clamp voltage
IBR = 250 µA
3
V
VDIS
Brown-out disable
voltage
50
150
mV
Thermal shutdown
TSD
Thermal shutdown
temperature
(1)
150
160
°C
THYST
Thermal shutdown
hysteresis
(1)
30
°C
1.
Specification assured by design, characterization and statistical correlation.
Table 7. Controller section (continued)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit



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