Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com

©2002 Bel Fuse Inc.

Specifications subject to change without notice. 08.02

POWER PRODUCTS

NON-ISOLATED DC/DC CONVERTERS

BP02S7DB-08C

3.3V Input / 1.2V – 2.5V Output / 8A

page 11

S7DB-08C250 Trim Resistor Calculation

Rtrim down =

9.590

Vo – Vo, adj

– 14.29

(

Rtrim up =

4.504

Vo, adj – Vo

– 8.66

(

Output Voltage Set-Point Adjustment

S7DB-08C180 Trim Resistor Calculation

Rtrim down =

3.869

Vo – Vo, adj

– 12.5

(

Rtrim up =

3.072

Vo, adj – Vo

– 8.66

(

1.9

1.96

2.02

2.08

2.14

2.2

2.26

2.32

2.38

2.44

2.5

0

30

60

90

120

150

180

210

240

270

300

A djusted outp ut voltage Vo,adj (V)

2.5

2.52

2.53

2.54

2.56

2.58

2.59

2.61

2.62

2.63

2.65

0

30

60

90

120

150

180

210

240

270

300

Adjusted output voltage Vo,adj(V)

1.5

1.53

1.56

1.59

1.62

1.65

1.68

1.71

1.74

1.77

1.8

0

30

60

90

120

150

180

210

240

270

300

A djust ed outp ut voltage Vo,adj (V)

1.8

1.83

1.86

1.89

1.92

1.95

1.98

2.01

2.04

2.07

2.1

0

30

60

90

120

150

180

210

240

270

300

Adjusted output voltage Vo,adj(V)