
2003 Bel Fuse Inc. Specifications subject to change without notice 022103
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
Bel Fuse Ltd.
Bel Fuse Europe Ltd.
206 Van Vorst Street
8F/ 8 Luk Hop Street
Preston Technology Management Centre
Jersey City, NJ 07302
San Po Kong
Marsh Lane, Suite G7, Preston
Tel 201-432-0463
Kowloon, Hong Kong
Lancashire, PR1 8UD, U.K.
Fax 201-432-9542
Tel 852-2328-5515
Tel 44-1772-556601
www.belfuse.com
Fax 852-2352-3706
Fax 44-1772-888366
www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
12V Input / Programmable Output / 30A VRM 9.0 Compatible
General Specifications
Parameter
Specification
Switching Frequency
1.2 MHz typical (fixed)
Dimensions
inches
mm
3.8 x 1.0 x .35
96.5 x 25.4 x 8.9
Operating Temperature
0
°C to 70°C
Non-Operating Temperature
-40
°C to 100°C
Protection Features
Over current
Undervoltage
110% to 170% max Io
UVLO Vin < 9.5V
Remote On/Off
Active High
Efficiency (full load)
1.85V output
86%
Pin Connections
Row A
Row B
Pin
Function
Pin
Function
1
VIN+
62
VIN-
2
VIN+
61
VIN-
3
VIN+
60
VIN-
4
VIN+
59
VIN-
5
Reserved
58
VRM-pres
6
No pin
57
VID4
7
VID3
56
VID2
8
VID1
55
VID0
9
TRIM
54
NC
10
PWRGD
53
OUTEN
11
VO-sen-
52
VO-sen+
12
UVLO_SET
51
Reserved
13
VO-
50
VO+
14
VO+
49
VO+
15
VO-
48
VO-
16
VO+
47
VO+
17
VO-
46
VO-
18
VO+
45
VO+
19
VO-
44
VO-
20
VO+
43
VO+
21
VO-
42
VO-
22
VO+
41
VO+
23
VO-
40
VO-
24
VO+
39
VO+
25
VO-
38
VO-
26
VO+
37
VO+
27
VO-
36
VO-
28
VO+
35
VO+
29
VO-
34
VO-
30
VO+
33
VO+
31
VO-
32
VO-
Voltage Identification (VID) Code
VID4
VID3
VID2
VID1
VID0
Vo (VDC)
1
Output Off
1
0
1.1
1
0
1
1.125
1
0
1.15
1
0
1
1.175
1
0
1
0
1.2
1
0
1
1.225
1
0
1.25
1
0
1
1.275
1
0
1
0
1.3
1
0
1
0
1
1.325
1
0
1
0
1.35
1
0
1
1.375
1
0
1
0
1.4
1
0
1
1.425
1
0
1.45
0
1
1.475
0
1
0
1.5
0
1
0
1
1.525
0
1
0
1.55
0
1
0
1
1.575
0
1
0
1
0
1.6
0
1
0
1
1.625
0
1
0
1.65
0
1
1.675
0
1
0
1.7
0
1
0
1
1.725
0
1
0
1.75
0
1
1.775
0
1
0
1.8
0
1
1.825
0
1.85
Part Numbers
There are two different models in this series based
on different loop compensation for various types of
capacitor banks. These models are as follows:
V7NB-30A180: Compensated for all ceramic
capacitor banks consisting of 30-40 22uF ceramic
capacitors
V7NB-30A18B: Compensated for capacitor bank
utilizing 4-6 820uF Oscon capacitors.
V7NB-30A18M: Compensated for Oscon caps but
all output voltages are divided by 1.1 yielding an
effective range of 1.0 to 1.68V compatible with the
requirements for new Motorola microprocessors.