NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input, 0.69 Vdc - 5.5 Vdc /12 A Outputs
December 2, 2010
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
General Specifications
Parameter
Efficiency
Vo=0.69V
Vo=1.2V
Vo=1.8V
Vo=2.5V
Vo=3.3V
Vo=5.0V
Switching Frequency
Over Temperature Protection
Sequencing Delay time
Tracking Accuracy
Power-Up: 0.5V/ms
Power-Down: 0.5V/ms
PGOOD (Power Good)
Output Voltage Limit for PGOOD
Pulldown resistance of PGOOD pin
Weight
MTBF
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Frequency Synchronization
Synchronization Frequency Range
High-Level Input Voltage
Low-Level Input Voltage
Input Current, SYNC
Minimum Pulse Width, SYNC
Minimum Setup/Hold Time, SYNC
520
2.5
-
-
250
250
-
-
-
-
-
-
600
-
0.8
1
-
-
KHz
V
V
mA
nS
nS
0.80 x 0.45 x 0.334
20.32 x 11.43 x 8.5
-
-
-
-
-
-
-
-
-
10
-
-
89.1
-
-
76.0
83.0
87.6
90.2
92.2
94.3
500
133
-
-
-
-
7
3.68
16,250,892
-
-
-
-
-
-
-
-
-
100
150
110.8
50
-
%
%
%
%
%
%
kHz
°C
mS
mV
mV
%Vo,set
Ω
g
hours
Calculated Per Telcordia Issue 2
Method 1 Case 3 (Io=0.8Io, max,
Ta=40°C)
Delay from V
IN, min
to application of
voltage on SEQ pin
Vin, min to Vin, max; Io, min to Io,
max, Vseq < Vo
Signal Interface Open Drain,
Vsupply
≤
6Vdc
Vin= 12Vdc, Ta=25°C
Io=Io, max , Vo= Vo,set
(for Vo=0.69V, Vin=10Vdc)
Min
Typ
Max
Unit
Notes
Note:
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and
temperature conditions.
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
4
BEL [ BEL FUSE INC. ]
