XRAH-03HXX0 Datasheet, PDF (1/9 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 32 Vdc Input
1.2 Vdc - 5.0 Vdc/3 A Output
xRAH-03Hxx0 Series RoHS Compliant Rev.B
• Non-Isolated
• High Efficiency
• High Power Density
• Excellent Thermal Performance
• UL60950-1 Recognized (UL/cUL)
• Remote On/Off
• Input Under Voltage Lockout
• OCP/SCP
• Low Cost
Description
The Bel xRAH-03Hxx0 is part of the low cost non-isolated dc/dc power converter series. 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 of 3.3
Vdc output is typically 90% at full load. Typical features include remote on/off, input under voltage lockout, over
current protection and short circuit protection.
Part Selection
Output
Voltage
5.0 V
Input Voltage
8.0 V - 32 V
Max. Output
Current
3A
Max. Output
Power
15 W
Typical
Efficiency
92%
Part Number
Surface Mount
SRAH-03H500
Part Number
Vertical Mount
VRAH-03H500
3.3 V
4.9 V - 32 V
3A
10 W
90%
SRAH-03H330
VRAH-03H330
2.5 V
4.5 V - 32 V
3A
7.5 W
88%
SRAH-03H250
VRAH-03H250
1.8 V
4.5 V - 32 V
3A
5.4 W
85%
SRAH-03H180
VRAH-03H180
1.5 V
4.5 V - 32 V
3A
4.5 W
83%
SRAH-03H150
VRAH-03H150
1.2 V
4.5 V - 32 V
3A
3.6 W
81%
SRAH-03H120
VRAH-03H120
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
Input Voltage (continuous)
-0.3 V
-
34 V
Output Enable Terminal Voltage
-0.3 V
-
12 V
Ambient Temperature
-40 °C
-
85 °C
Storage Temperature
-40 °C
-
125 °C
Notes
Input Specifications
Parameter
Input Voltage
Input Current (no load)
Input Current (full load)
Remote Off Input Current
Input Reflected Ripple Current
(pk-pk)
Input Reflected Ripple Current
(rms)
I²t Inrush Current Transient
Turn on Voltage Threshold ¹
Turn off Voltage Threshold ²
Min
4.5 V
-
-
-
-
-
-
-
-
Typ
-
30 mA
-
4 mA
200 mA
100 mA
0.02 A²s
4.1 V
3.3 V
Max
32 V
-
3A
-
400 mA
150 mA
0.1 A²s
4.5 V
4.0 V
Notes
See “Part Selection” for more details.
Tested with simulated source impedance of
500 nH, 5 Hz to 20 MHz and two
100 uF/50 V electrolytic capacitors and a 3.3
uF/50 V ceramic capacitor at the input.
Notes: 1. The max Turn on Voltage threshold of the 3.3 V & 5.0 V output module will be relaxed to 4.9 V & 8.0 V
respectively.
2. The max Turn off Voltage threshold of the 3.3 V output module will be relaxed to 4.5 V. The 5.0 V output
module does not have such function.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com