XRAH-12F1A0 Datasheet, PDF (1/10 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
3.0 Vdc - 5.5 Vdc Input
0.8 Vdc - 3.63 Vdc/12 A Output
xRAH-12F1A0
RoHS Compliant
Rev.A
• Non-Isolated
• Wide Trim
• Fixed Frequency (300 kHz)
• Remote Sense (SMD Module)
• OCP/SCP
• Remote On/Off
• Under Voltage Lockout (UVLO)
• UL60950-1 Recognized (UL/cUL)
Description
The Bel xRAH-12F1A0 modules are a series of non-isolated, step down dc/dc power converters that operate from
3.0 Vdc to 5.5 Vdc source. These converters are available in a range of output voltages from 0.8 Vdc to 3.63 Vdc.
It is packaged in a compact, overmolded package rated at 12 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 94% at 3.3 Vdc output full load.
Part Selection
Output Voltage Input Voltage
0.9 Vdc - 3.3 Vdc 3.0 Vdc - 5.5 Vdc
Max. Output
Current
12 A
Max. Output
Power
39.6 W
Typical
Efficiency
94%
Part Number
Surface Mount
SRAH-12F1A0
Part Number
Vertical Mount
VRAH-12F1A0
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
-
6V
Output Enable Terminal Voltage
-0.3 V
-
6V
Ambient Temperature
-40 °C
-
85 °C
Storage Temperature
-55 °C
-
125 °C
Notes
Input Specifications
Parameter
Min
Typ
Max
Input Voltage
3V
-
5.5 V
Input Current (no load)
-
100 mA 150 mA
Input Current (full load)
VO=3.3 V
-
-
11 A
VO=2.5 V
-
-
10.5 A
VO=1.8 V
-
-
9.0 A
VO=1.5 V
-
-
8.1 A
VO=1.2 V
-
-
6.5 A
VO=0.9 V
-
-
5.2 A
Remote Off Input Current
-
4 mA
8 mA
Notes
Input Reflected Ripple Current (pk-pk)
Input Reflected Ripple Current (rms)
-
250 mA 400 mA ^{With simulated source impedance of 500 nH,}
5 Hz to 20 MHz; use a 270 uF/16 V cap with
-
80 mA 120 mA ESR=0.0018 ohm max at 100 kHz
I²t Inrush Current Transient
-
0.09 A²s 0.2 A²s
Turn on Voltage Threshold
Turn off Voltage Threshold
2.1 V
-
-
2V
-
Note: All specifications are typical at 5 V input, full load at 25 °C unless otherwise stated.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com