NON-ISOLATED DC/DC CONVERTERS
9.0 Vdc - 18 Vdc Input
5 Vdc - 12 Vdc/1A Output
xRAH-01K Series
RoHS Compliant
Rev.A
• Non-Isolated
• Low Profile Package
• High Efficiency
• Remote On/Off
• Active Low/High
• Fixed Frequency (450kHz)
• UL60950-1 Recognized (UL/cUL)
Description
The Bel xRAH-01Kxxx is a part of the low cost non-isolated dc/dc converter Power Module series. The modules
use a SMD or SIP package for ease of layout and space savings. The output is closely regulated and the
efficiency of 9 Vdc output module is typically 86% at full load.
Part Selection
Output
Voltage
5 V
Input Voltage
Max. Output
Current
1 A
Max. Output
Power
5 W
Typical
Efficiency
81%
Part Number
Surface Mount
SRAH-01K50x
SRAH-01K90x
SRAH-01KX2x
Part Number
Vertical Mount
VRAH-01K50x
VRAH-01K90x
VRAH-01KX2x
9 V - 18 V
9 V - 18 V
9 V - 18 V
9 V
12 V
1 A
1 A
9 W
12 W
86%
87%
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. Use "0" to replace "x" in the above part number to indicate Active High, and "L" to indicate Active Low.
3. 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)
Remote On/Off
Min
Typ
Max
24 V
24 V
85 °C
125 °C
Notes
-0.3 V
-0.3 V
-40 °C
-40 °C
-
-
-
-
Ambient Temperature
Storage Temperature
Input Specifications
Parameter
Input Voltage
Min
9 V
Typ
-
Max
18 V
Notes
Remote Off Input Current
Input Current (no load)
Input Current (full load)
-
-
18 mA
30 mA
25 mA
45 mA
Vo=5 V
Vo=9 V
Vo=12 V
-
-
-
-
-
-
0.8 A
1.3 A
1.8 A
Input Reflected Ripple Current (pk-pk)
Vo=5 V
Vo=9 V
Vo=12 V
-
-
-
55 mA
75 mA
95 mA
80 mA
110 mA
130 mA
With simulated source impedance of
500 nH, 5 Hz to 20 MHz; Use one 100
uF/25 V tantalum capacitor at the input.
Input Reflected Ripple Current (rms)
Vo=5 V
Vo=9 V
Vo=12 V
-
-
-
15 mA
20 mA
30 mA
25 mA
30 mA
40 mA
I2t Inrush Current Transient
Turn-on Voltage Threshold
-
0.003 A2s
0.01 A2s
8.0 V
8.5 V
7.6 V
8.8 V
8.2 V
NOT FOR NEW DESIGNS
Turn-off Voltage Threshold
7.2 V
Note: All specifications are typical 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