VIPER25 STMicroelectronics, VIPER25 Datasheet - Page 9

• Manufacturer Part Number: VIPER25
• Description: VIPerPlus family: quasi-resonant high performance off line high voltage converter
• Manufacturer: STMicroelectronics

VIPER25
Table 8.
Oscillator section
Brown-out protection
Thermal shutdown
F
V
Symbol
F
F
STARTER
V
I
T
BRclamp
OSCmin
V
BRhyst
OSClim
V
T
BRhyst
HYST
BRth
DIS
SD
Controller section (continued)
Internal frequency limit
Internal frequency limit
Starter frequency
Brown-out threshold
Voltage hysteresis above
V
Current hysteresis
Clamp voltage
Brown-out disable voltage
Thermal shutdown
temperature
Thermal shutdown hysteresis
BRth
Parameter
Doc ID 15585 Rev 4
VIPER25L
VIPER25H
V
V
t<t
V
V
t>t
VFB = 1 V,
V
Voltage falling
Violate rising
I
BR
FB
ZCD
FB
ZCD
ZCD
SU
SU
Test condition
=1 V,
=1 V,
= 250 µA
<V
<V
> V
ZCDT th
ZCDT th
ZCDA_th
Min.
0.41
122
200
150
50
7
F
F
F
OSClim
OSClim
OSClim
Typ.
1/64
0.45
136
225
160
1/4
1/8
50
30
3
Electrical data
Max. Unit
0.49
150
250
150
12
kHz
kHz
kHz
kHz
kHz
mV
mV
μA
°C
9/40
°C
V
V