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Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
2.4 V - 5.5 V Input
0.75 V - 3.63 V/10 A Output
Non-Isolated
High Efficiency
High Power Density
Fixed Frequency (300kHz)
OCP/SCP
Flexible Output Voltage
Sequencing
Over Temperature Protection
Under-Voltage Lockout (UVLO)
Wide Input Range
Wide Trim Range
Remote On/Off
Remote Sense
Converter Can Sink and Source
Current
Active Low/High (option)
Description
The Bel VRBC-10F2Ax modules are a series of non-isolated dc/dc converters that deliver up to 10 A of output
current with full load efficiency of 94% at 3.3 V output. These modules provide precisely regulated voltage
programmable via external resistor from 0.75 V to 3.63 V over a wide range of input voltage (2.4 V-5.5 V).
These modules have a sequencing feature that enables designers to implement various types of output voltage
sequencing when powering multiple voltages on a board. The open-frame construction and small footprint
enable designers to develop cost and space-efficient solutions. Standard features include remote On/Off,
remote sense, over current protection, short current protection, wide input, and programmable output voltage.
Part Selection
Output
Voltage
Voltage
Current
Power
Input
Max. Output
Max. Output
Typical
Efficiency
Model Number
Active Low
Model Number
Active High
0.75 V - 3.63 V
1
2.4 V - 5.5 V
10 A
36.3 W
94%
VRBC-10F2AL
VRBC-10F2A0
Notes
:
1. These modules use a buck topology, so the output voltages must be 0.5 V less than the input voltage.
2. Add “G” to the end of the Model Number to indicate Tray Packaging.
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
Min
-0.3 V
Typ
-
Max
5.8 V
Notes
Output Enable Terminal Voltage
-0.3 V
-
5.8 V
Sequencing Voltage
1
-0.3 V
-
Vin
Ambient Temperature
-40
°
C
-
85
°
C
Storage Temperature
-55
°
C
-
125
°
C
Notes
: All specifications are typical at 25
°
C
unless otherwise stated.
1. VRBC-10F2Ax series of modules include a sequencing feature that enables users to implement
various types of output voltage sequencing in their applications. This is accomplished via an additional
sequencing pin. When the sequencing feature is not used, tie the SEQ pin to Vin.
VRBC-10F2Ax Series RoHS Compliant