NON-ISOLATED DC/DC CONVERTERS
3.0 Vdc - 5.5 Vdc Input, -5 Vdc/1 A, -5.2 Vdc/1 A, -12 Vdc/0.5 A Outputs
xRAH-01FxxN Series
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Non-Isolated
Fixed Frequency
High Efficiency
High Power Density
RoHS Compliant
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Low Cost
Rev.A
Excellent Thermal Performance
OCP/SCP
Industrial Temperature Range
UL60950-1 Recognized (UL/cUL)
Description
The Bel xRAH-01FxxN modules are non-isolated; step down dc/dc converters that operate from a 3 V - 5.5 V
source. Output voltages are -5.0 V, -5.2 V, and -12 V. They are packaged in a compact, overmolded package
rated at 1 A, 1 A, 0.5 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 is typically 88% at 1 A, -5 V
output at full load.
Part Selection
Output
Voltage
-5.0 V
-5.2 V
-12 V
Input
Voltage
3.0 V - 5.5 V
3.0 V - 5.5 V
3.0 V - 5.5 V
Max. Output
Current
1A
1A
0.5 A
Max. Output
Power
5W
5.2 W
6W
Typical
Efficiency
88%
88%
88%
Part Number
Surface Mount
SRAH-01F50N
SRAH-01F52N
SRAH-01FX2N
Part Number
Vertical Mount
VRAH-01F50N
VRAH-01F52N
VRAH-01FX2N
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
Input Voltage (continuous)
Ambient Temperature
Storage Temperature
Min
-0.3 V
-40
°C
-40
°C
Typ
-
-
-
Max
7V
85
°C
125
°C
Notes
Input Specifications
Parameter
Input Voltage
Input Current (full load)
V
O
= -5.0 V, -5.2 V
V
O
= -12 V
Input Current (no load)
V
O
= -5.0 V, -5.2 V
V
O
= -12 V
Input Reflected Ripple Current
(pk-pk)
Input Reflected Ripple Current
(rms)
I t Inrush Current Transient
Turn-on Voltage Threshold
Turn-off Voltage Threshold
V
O
= -5.0 V, -5.2 V
V
O
= -12 V
2
Min
3V
-
-
-
-
-
-
-
-
0.4 V
1.0 V
Typ
-
-
-
-
-
80 mA
20 mA
-
2.63 V
-
-
Max
5.5 V
2.1 A
2.5 A
150 mA
200 mA
160 mA
50 mA
0.01 A s
-
2.0 V
2.3 V
2
Notes
For -5 V & -5.2 V output, use a 680uF/6.3
V Os-con capacitor; For -12 V output, use
1000 uF electrolytic capacitor & 22 uF/10
V ceramic capacitor at the input.
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
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Tel 201-432-0463
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Fax 201-432-9542
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www.belfuse.com
BEL [ BEL FUSE INC. ]
