VRBA-03E1A_07 Datasheet, PDF (1/8 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input
0.75 Vdc - 5.0 Vdc/3 A Output
VRBA-03E1Ax
RoHS Compliant
Rev.A
• Non-Isolated
• Fixed Frequency
• High Efficiency
• High Power Density
• Under-voltage Lockout (UVLO)
• OCP/SCP
• Remote On/Off
• Wide Trim Range
• Wide Input Range
• Active Low/High (Option)
Description
The Bel VRBA-03E1Ax modules are a series of non-isolated dc/dc converters that deliver up to 3 A of output
current with full load efficiency of 93% at 5.0 Vdc output. These modules provide precisely regulated voltage
programmable via external resistor from 0.75 Vdc to 5.0 Vdc over a wide range of input voltage. 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
Input
Voltage
Voltage
0.75 V - 5 V¹ 4.5 V - 14 V
Max. Output
Current
3A
Max. Output
Power
15 W
Typical
Efficiency at 5.0V
93%
Model Number
Active High
VRBA-03E1A0
Model Number
Active Low
VRBA-03E1AL
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.
3. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Input Voltage (continuous)
-0.3 V
-
15 V
Output Enable Terminal Voltage
-0.3 V
-
15 V
Ambient Temperature
-40 °C
-
85 °C
Storage Temperature
-55 °C
-
125 °C
Note: All specifications are typical at 25 °C unless otherwise stated.
Notes
Input Specifications
Parameter
Input Voltage
Vo set=5 V
Vo set≤3.3 V
Input Current (full load)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
Input Current (no load)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
Remote Off Input Current
Input Reflected Ripple Current (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
Min
7.0 V
4.5 V
-
-
-
-
-
-
-
-
-
-
Typ
12 V
12 V
1.35 A
1.00 A
0.25 A
65 mA
50 mA
15 mA
3 mA
150 mA
100 mA
35 mA
Max
14 V
14 V
3.70 A
2.50 A
0.65 A
80 mA
60 mA
20 mA
6 mA
200 mA
150 mA
60 mA
Notes
Tested with simulated source
impedance of 1 uH, 5 Hz to 20 MHz and
two 100 uF/25 V external input
Tantalum capacitors.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com