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SI9122 Datasheet(PDF) 3 Page - Vishay Siliconix

Part # SI9122
Description  500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification Drivers
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Manufacturer  VISHAY [Vishay Siliconix]
Direct Link  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SI9122 Datasheet(HTML) 3 Page - Vishay Siliconix

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Document Number: 71815
S-80038-Rev. J, 14-Jan-08
www.vishay.com
3
Vishay Siliconix
Si9122
Notes:
a. Device Mounted on JEDEC compliant 1S2P test board.
b. Derate - 14 mW/°C above 25 °C.
c. Derate - 26 mW/°C above 25 °C.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
ABSOLUTE MAXIMUM RATINGS All voltages referenced to GND = 0 V
Parameter
Limit
Unit
VIN (Continuous)
75
V
VIN (100 ms)
100
VCC
14.5
VBST
Continuous
90
100 ms
115
VLX
75
VBST - VLX
15
VREF, ROSC
- 0.3 to VCC + 0.3
Logic Inputs
- 0.3 to VCC + 0.3
Analog Inputs
- 0.3 to VCC + 0.3
HV Pre-Regulator Input Current (Continuous)
5
mA
Storage Temperature
- 65 to 150
°C
Operating Junction Temperature
150
Power Dissipationa
TSSOP-20
MLP65-20
850
2500
mW
Thermal Impedance (
Θ
JA)
TSSOP-20b
MLP65-20c
75
38
°C/W
RECOMMENDED OPERATING RANGE All voltages referenced to GND = 0 V
Parameter
Limit
Unit
VIN
12 to 72
V
CVIN1 || CVIN2
100 µF/ESR
≤ 100 mΩ, 0.1 µF
VCC Operating
10 to 13.2
V
CVCC
4.7
µF
fOSC
200 to 600
kHz
ROSC
24 to 72
k
Ω
RBBM
22 to 50
CBBM
h
> 680
pF
CSS
4.7
nF
CREF
0.1
µF
CBOOST
0.1
CLOAD
150
Analog Inputs
0 V to VCC - 2 V
V
Digital Inputs
0 V to VCC
Reference Voltage Output Current
0 to 2.5
mA


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