鈥?/div>
Remote On/Off
Fixed Frequency
OCP/SCP
Rev.A
UL60950-1 Recognized (UL/cUL
Description
The Bel xRAH-03L1A0 modules are a series of non-isolated, step down dc/dc converters that operate from a
nominal 12 Vdc source. These converters are available in an output voltage range from 0.9 Vdc to 3.3 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 3.3 Vdc output is typically 88% at full load. Typical features include remote on/off, over current
protection and short circuit protection.
Part Selection
Output
Voltage
0.9 V - 3.3 V
Input
Voltage
5.0 V - 24 V
Max. Output
Current
3A
Max. Output
Power
10 W
Typical
Efficiency
88%
Part Number
Surface Mount
SRAH-03L1A0
Part Number
Vertical Mount
VRAH-03L1A0
Notes:
1. Add 鈥?鈥?suffix at the end of the model number to indicate 鈥淭ube Packaging鈥? and 鈥淩鈥?for 鈥淩eel
Packaging鈥? and 鈥淕鈥?for 鈥淭ray Packaging鈥?
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)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Min
-0.3 V
-0.3 V
-40
擄C
-40
擄C
Typ
-
-
-
-
Max
25 V
24 V
85
擄C
125
擄C
Notes
Input Specifications
Parameter
Input Voltage
V
O
=3.3 V
V
O
=2.5 V
V
O
=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.9 V
Input Current (no load)
Input Current (full load)
Remote Off Input Current
Input Reflected Ripple Current (pk-pk)
Input Reflected Ripple Current (rms)
I t Inrush Current Transient
Turn on Voltage Threshold
Turn off Voltage Threshold
2
Min
5V
5V
5V
5V
5V
5V
-
-
-
-
-
-
-
3.5 V
Typ
-
-
-
-
-
-
-
-
3 mA
200 mA
50 mA
0.05 A s
4.0 V
-
2
Max
24 V
24 V
18 V
15 V
12 V
9V
100 mA
3A
10 mA
-
-
0.1 A s
-
4.9 V
2
Notes
With simulated source impedance of 500 nH,
5 Hz to 20 MHz. Use one 100 uF/ 35 V
Tantalum capacitor and one 3.3 uF/ 50 V
ceramic capacitor at the input
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
鈥?/div>
Tel 201-432-0463
鈥?/div>
Fax 201-432-9542
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