NON-ISOLATED DC/DC CONVERTERS
3.3 Vdc Input
0.9 Vdc - 2.5 Vdc/3 A Output
xRAH-03C Series RoHS Compliant
Rev.A
•
•
•
•
•
Non-Isolated
•
•
•
•
•
OCP/SCP
High Efficiency
Wide Range Trim
Low Cost
Remote On/Off
Excellent Thermal Performance
Input Under Voltage Lockout
Industrial Temperature Range
UL60950-1 Recognized (UL/cUL)
Description
The Bel xRAH-03C1A0 modules are a series of non-isolated, step down dc/dc converters that operate from a
nominal 3.3 Vdc source. These converters are available in a range of output voltages from 0.9 Vdc to 2.5 Vdc. It
is packaged in a compact, overmolded package rated at 3 A. Optional lead forming provides a vertical mount
product for minimal footprint or a surface mount option for a very low profile. The output is closely regulated and
the efficiency for 2.5 Vdc output is typically 93% at full load. Typical features include remote on/off, input under
voltage lockout, over current protection and short circuit protection.
Part Selection
Output Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Part Number
Surface Mount
Part Number
Vertical Mount
0.9 Vdc - 2.5 Vdc
2.5 Vdc
3.3 Vdc
3.3 Vdc
3.3 Vdc
3.3 Vdc
3.3 Vdc
3.3 Vdc
3 A
3 A
3 A
3 A
3 A
3 A
7.5 W
7.5 W
5.4 W
4.5 W
3.6 W
2.7 W
93%
93%
89%
87%
84%
81%
SRAH-03C1A0
SRAH-03C250
SRAH-03C180
SRAH-03C150
SRAH-03C120
SRAH-03C090
VRAH-03C1A0
VRAH-03C250
VRAH-03C180
VRAH-03C150
VRAH-03C120
VRAH-03C090
1.8 Vdc
1.5 Vdc
1.2 Vdc
0.9 Vdc
Notes: 1. Add “0” suffix at the end of the model number to indicate “Tube Packaging”, and “R” for “Reel
Packaging”, and “G” for “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
-
6 V
Output Enable Terminal Voltage
Ambient Temperature
-0.3 V
-40 °C
-55 °C
-
-
-
6 V
85 °C
125 °C
Storage Temperature
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
3 V
-
-
3.6 V
Input Current (no load)
Input Current (full load)
-
110mA
VO=2.5 V
-
-
-
-
-
-
-
-
-
-
3.1 A
2.3 A
1.9 A
1.6 A
1.2 A
VO=1.8 V
VO=1.5 V
VO=1.2 V
VO=0.9 V
Remote Off Input Current
-
7 mA
14 mA
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com