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SI9122A Datasheet(PDF) 12 Page - Vishay Siliconix

Part # SI9122A
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

SI9122A Datasheet(HTML) 12 Page - Vishay Siliconix

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Document Number: 73492
S-80038-Rev. D, 14-Jan-08
Vishay Siliconix
Si9122A
TYPICAL CHARACTERISTICS
fOSC vs. ROSC at VCC = 12 V
VREG vs. Temperature, VIN = 48 V
ISS vs. Temperature
200
300
400
500
600
20
30
40
50
60
70
80
ROSC (kΩ)
Temperature ( C)
7.5
8.0
8.5
9.0
9.5
10.0
- 50
- 25
0
25
50
75
100
125
150
VINDET > VREF
TC = - 11 mV/C
15
17
19
21
23
25
- 50
- 25
0
25
50
75
100
125
Temperature (°C)
VCC = 13 V
VCC = 10 V
VCC = 12 V
VREF vs. Temperature, VCC = 12 V
SRL, SRH Duty Cycle vs. VEP
VSS vs. Temperature, VCC = 12 V
3.270
3.275
3.280
3.285
3.290
3.295
3.300
- 50
- 25
0
25
50
75
100
Temperature (°C)
0
10
20
30
40
50
60
70
80
90
100
0.0
0.5
1.0
1.5
2.0
VEP (V)
3.6 V = VINDET
VCC = 12 V
7.2 V
4.8 V
7.90
7.95
8.00
8.05
8.10
8.15
8.20
- 50
- 25
0
25
50
75
100
125
150
Temperature (°C)
TC = + 1.25 mV/C
VINDET > VREF


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