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SRBA-03A1A0G

P1-P3P4-P6P7-P9
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
8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/3 A Output
• Non-Isolated • Under-Voltage Lockout (UVLO)
• Fixed Frequency • OCP/SCP
• High Efficiency • Remote On/Off
• High Power Density • Wide Trim Range
• Active Low/High (Option) • 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
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical Efficiency
at 5.0V
Model Number
Active High
Model Number
Active Low
0.75 V - 5.0 V 8.3 V - 14 V 3 A 15 W 93% SRBA-03A1A0 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 Min Typ Max Notes
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.
Input Specifications
Parameter Min Typ Max Notes
Input Voltage 8.3 V 12 V 14 V
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
SRBA-03A1Ax RoHS Com
p
liant Rev.A
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
8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/3 A Output
Input Specifications (continued)
Parameter Min Typ Max Notes
Remote Off Input Current - 3 mA 6 mA
Input Reflected Ripple Current (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
-
-
-
75 mA
50 mA
20 mA
120 mA
90 mA
35 mA
Input Reflected Ripple Current (rms)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
-
-
-
20 mA
15 mA
5 mA
60 mA
30 mA
15 mA
Tested with two 100 uF/25 V tantalum
input capacitors & simulated source
impedance of 1 uH, 5 Hz to 20 MHz.
I
2
t Inrush Current Transient - 0.01 A
2
s0.02 A
2
s
Turn-on Voltage Threshold 7.6V 7.9 V 8.2 V
Turn-off Voltage Threshold 7.0V 7.8 V 8.1 V
Output Specifications
Parameter Min Typ Max Notes
Output Voltage Set Point -2% Vo,set - 2% Vo,set Vin=12 V, lo=lomax, full load
Output Voltage Set Point -2.5% Vo,set - 3.5% Vo,set
Over all operating input
voltages, resistive loads and
temperature conditions
Load Regulation 0.5% Vo,set 0.4% Vo,set 0.5% Vo,set Io=Iomin to Iomax
Line Regulation 0.4% Vo,set 0.3% Vo,set 0.4% Vo,set Vin=Vinmin to Vinmax
Regulation Over Temperature
(-40 °C to +85 °C)
- 0.5% Vo,set 0.8% Vo,set
Output Current 0 A - 3 A
Current Limit Threshold 5 A - 12 A
Short Circuit Surge Transient
- 0.15 A
2
s -
Ripple and Noise (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
-
-
-
65 mV
45 mV
20 mV
100 mV
80 mV
35 mV
Ripple and Noise (rms)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
-
-
-
20 mV
10 mV
5 mV
40 mV
25 mV
15 mV
Tested with 0-20 MHz, with
10 uF/10 V tantalum capacitor
and 1uF/10 V ceramic
capacitor at the output
Turn on Time - 5 mS 8 mS
Overshoot at Turn on - 0% 3%
Output Capacitance 0 uF - 1200 uF
Transient Response
50% ~ 100% Max Load - 200 mV 300 mV
Settling Time - 50 uS 80 uS
100% ~ 50% Max Load - 200 mV 300 mV
Settling Time
All
- 50 uS 80 uS
di/dt=2.5 A/uS; Vin=12 V; and
with 10 uF/10 V tantalum
capacitor and 1 uF/10 V
ceramic capacitor at the output
Note: All specifications are typical at nominal input (Vin=12 V), full load at 25 °C unless otherwise stated.
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
8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/3 A Output
General Specifications
Parameter Min Typ Max Notes
Efficiency
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
90%
88%
76%
93%
91%
80%
-
-
-
Measured at Vin=12 V, full load (Current
Source)
Switching Frequency - 300 kHz -
Over Temperature Shutdown -
135 °C
-
MTBF 6,740,000 hours
Calculated Per Bell Core SR-332 (I
O =
80% load; T
a = 25 °C)
Dimensions (Surface Mount)
Inches (L × W × H)
Millimeters (L × W × H)
0.8 x 0.45 x 0.251
20.32 x 11.42 x 6.38
Weight - 3 g -
Note: All specifications are typical at 25 °C unless otherwise stated.
Control Specifications
Parameter Min Typ Max Notes
Remote On/Off
Signal Low (Unit Off) -0.3 V - 0.4 V
Signal High (Unit On) 2.5 V - 14 V
SRBA-03A1A0; Remote On/Off pin
open, Unit on.
Signal Low (Unit On) -0.3 V - 0.4 V
Signal High (Unit Off) 2.5 V - 14 V
SRBA-03A1AL; Remote On/Off pin
open, Unit on.
Output Voltage Trim Range (Wide Trim) 0.7525 V - 5.0 V
P1-P3P4-P6P7-P9

SRBA-03A1A0G

Mfr. #:
Buy SRBA-03A1A0G
Manufacturer:
Bel
Description:
DC DC CONVERTER 0.75-5V 15W
Lifecycle:
New from this manufacturer.
Delivery:
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