![](http://datasheet.mmic.net.cn/200000/VRAH-03C090G_datasheet_15113707/VRAH-03C090G_1.png)
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
3.3 Vdc Input
0.9 Vdc - 2.5 Vdc/3 A Output
Non-Isolated
OCP/SCP
High Efficiency
Wide Range Trim
Low Cost
Remote On/Off
Excellent Thermal Performance
Industrial Temperature Range
Input Under Voltage Lockout
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
3.3 Vdc
3 A
7.5 W
93%
SRAH-03C1A0
VRAH-03C1A0
2.5 Vdc
3.3 Vdc
3 A
7.5 W
93%
SRAH-03C250
VRAH-03C250
1.8 Vdc
3.3 Vdc
3 A
5.4 W
89%
SRAH-03C180
VRAH-03C180
1.5 Vdc
3.3 Vdc
3 A
4.5 W
87%
SRAH-03C150
VRAH-03C150
1.2 Vdc
3.3 Vdc
3 A
3.6 W
84%
SRAH-03C120
VRAH-03C120
0.9 Vdc
3.3 Vdc
3 A
2.7 W
81%
SRAH-03C090
VRAH-03C090
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
-0.3 V
-
6 V
Ambient Temperature
-40
°C
-
85
°C
Storage Temperature
-55
°C
-
125
°C
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
3 V
-
3.6 V
Input Current (no load)
-
110mA
Input Current (full load)
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
VO=0.9 V
-
3.1 A
2.3 A
1.9 A
1.6 A
1.2 A
Remote Off Input Current
-
7 mA
14 mA
xRAH-03C Series
RoHS Compliant
Rev.A