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NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.0 Vdc/3 A Output
SRBA-03A1Ax
RoHS Compliant
Rev.A
?
?
?
?
?
Non-Isolated
Fixed Frequency
High Efficiency
High Power Density
Active Low/High (Option)
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?
?
?
?
Under-Voltage Lockout (UVLO)
OCP/SCP
Remote On/Off
Wide Trim Range
Wide Input Range
Description
The Bel SRBA-03A1Ax 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 5.5 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, over-temperature protection, over current
protection, short circuit protection, and under-voltage lockout.
Part Selection
Output
Voltage
0.75 V - 5.0 V
Input
Voltage
8.3 V - 14 V
Max. Output
Current
3A
Max. Output
Power
15 W
Typical Efficiency
at 5.0V
93%
Model Number
Active High
SRBA-03A1A0
Model Number
Active Low
SRBA-03A1AL
Notes : 1.Add “G” suffix at the end of the model number to indicate Tray Packaging.
2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Min
-0.3 V
-0.3 V
-40 ° C
-55 ° C
Typ
-
-
-
-
Max
15 V
15 V
85 ° C
125 ° C
Notes
Note : All specifications are typical at 25 ° C unless otherwise stated.
Input Specifications
Input Voltage
Parameter
Min
8.3 V
Typ
12 V
Max
14 V
Notes
Input Current (full load)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
-
-
-
1.35 A
0.90 A
0.24 A
2.00 A
1.30 A
0.35 A
Input Current (no load)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
-
-
-
55 mA
40 mA
15 mA
65 mA
50 mA
20 mA
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 ? Tel 201-432-0463 ? Fax 201-432-9542 ? www.belfuse.com
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