SI9121 Vishay, SI9121 Datasheet - Page 5

• Manufacturer Part Number: SI9121
• Description: High-voltage, Non-isolated Buck-boost Converter For Isdn Digital Phones
• Manufacturer: Vishay

Document Number: 71112
S-40708—Rev. C, 19-Apr-04
TYPICAL CHARACTERISTICS (INTERNALLY REGULATED, 25_C UNLESS NOTED)
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
10
10
V
Output Load vs. Efficiency (Si9121DY-3)
Output Load vs. Efficiency (Si9121DY-3)
V
IN
V
IN
NEG
= 48 V
= 10 V
= −10 V
V
NEG
With V
No V
= −60 V
V
V
NEG
I
I
OUT
OUT
IN
CC
CC
100
100
= 60 V
= −48 V
Winding
(mA)
(mA)
Winding
1000
1000
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
10
10
10 V
48 V
10 V
Output Load vs. Efficiency (Si9121DY-5)
Output Load vs. Efficiency (Si9121DY-5)
IN
IN
IN
With V
No V
I
I
OUT
OUT
Vishay Siliconix
CC
60 V
CC
100
100
(mA)
(mA)
Winding
Winding
IN
48 V
60 V
IN
IN
Si9121
www.vishay.com
1000
1000
5