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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 Vdc - 5.5 Vdc Input
0.75 Vdc - 3.63 Vdc/16 A Output
Non-Isolated
Under-voltage Lockout (UVLO)
High Efficiency
Over Temperature Protection
High Power Density
Remote Sense
OCP/SCP
Wide Input
Fixed Frequency (300 kHz)
Wide Trim
Flexible Output Voltage
Sequencing
Current
Remote On/Off
Active Low/High (Option)
Converter can sink and source
Description
The Bel VRBC-16F2Ax modules are a series of non-isolated dc/dc converters that can deliver up to 16 A of output
current with full load efficiency of 94% at 3.3 Vdc output. These modules provide precisely regulated voltage
programmable via external resistor from 0.75 Vdc to 3.63 Vdc over a wide range of input voltage (2.4 Vdc - 5.5
Vdc). These modules have a sequencing feature that enables designers to implement various types of output
voltage sequencing when powering multiple voltages on a board. Their open-frame construction and small
footprint enable designers to develop cost and space-efficient solutions. Standard features include remote
ON/OFF, programmable output voltage and over current protection.
Part Selection
Output
Voltage
Voltage
Current
Power
0.75 V -3.63 V
1
2.4 V -5.5 V
16 A
58.1 W
Input
Max. Output
Max. Output
Typical
Efficiency
94%
Model Number
Active Low
VRBC-16F2AL
Model Number
Active High
VRBC-16F2A0
Notes
:
1. These modules use a buck topology, so the output voltages must be 0.8 V less than the input voltage.
2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
3. 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-16F2Ax 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 or leave the SEQ pin
floating.
VRBC-16F2Ax RoHS Compliant Rev.A