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
4.5 Vdc - 5.5 Vdc Input
3.3 Vdc / 6 A Output
Non-Isolated
High Efficiency
High Power Density
Fixed Frequency (300 kHz)
Power Good Output Signal
Converter Can Sink & Source
Current
Description
The Bel VRPB-06F33H modules are a series of non-isolated high density open frame dc/dc converters that can
deliver up to 6 A of output current with full load efficiency of 94% at 3.3 Vdc output. Their open-frame
construction and small footprint enable designers to develop cost and space-efficient solutions. Standard features
include remote On/Off, power good output signal, over current protection and short circuit protection.
Part Selection
Max. Output
Current
3.3 Vdc
4.5 Vdc - 5.5 Vdc
6 A
Notes
:
1. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
2. Add “G” suffix at the end of the model numbers listed above to indicate “Tray Packaging”.
Absolute Maximum Ratings
Parameter
Min
Typ
Input Voltage (continuous)
-0.3 V
-
Output Enable Terminal Voltage
-0.3 V
-
Ambient Temperature
-40
°
C
-
Storage Temperature
-55
°
C
-
Note
: All specifications are typical at 25
°
C unless otherwise stated.
Input Specifications
Parameter
Min
Typ
Input Voltage
4.5 V
-
Input Current (full load)
-
4.21 A
Input Current (no load)
-
100 mA
Remote Off Input Current
-
5 mA
Under Voltage Lockout (UVLO)
OCP/SCP
Remote On/Off
Remote Sense
Trim Function
Output Voltage
Input Voltage
Max. Output
Power
20 W
Typical
Efficiency
94%
Model Number
VRPB-06F33H
Max
5.8 V
5.5 V
85
°
C
125
°
C
Notes
Max
5.5 V
-
-
-
Notes
Tested with simulated source
impedance of 1uH, 5 Hz to 20 MHz,
a 1000 uF/16 V electrolytic capacitor,
a 220 uF/10 V Tantalum capacitor
and 2.2 uF/10 V ceramic capacitor at
the input.
Input Reflected Ripple Current
(pk-pk)
-
60 mA
-
Input Reflected Ripple Current
(rms)
-
20 mA
-
I
2
t Inrush Current Transient
Turn-on Voltage Threshold
Turn-off Voltage Threshold
Note
: All specifications are typical at 25
°
C unless otherwise stated.
-
-
-
0.04 A
2
s
4.0 V
-
3.6 V
3.5 V
3.4 V
VRPB-06F33H RoHS Compliant PRELIMINARY Rev.A