NON-ISOLATED DC/DC CONVERTERS
3.0V-5.5V Input
0.8V-3.3V/12A Output
X7AH-12F1A0
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Non-Isolated
High Efficiency
Fixed Frequency
PRELIMINARY
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OCP/SCP
Input Under Voltage Lockout
Remote On/Off
Remote Sense (SMD module)
Trim Function
Excellent Thermal Performance
Low Cost
Description
The Bel X7AH-12F1A0 is part of the low cost non-isolated dc to dc converter series. This converter is available
in a range of output voltages from 0.9V to 3.3V. It is packaged in a compact, overmolded package rated at 12A.
The output is closely regulated and the efficiency of 3.3V output module is typically 93% at full load. Typical
features include remote on/off, input under voltage lockout, over current protection and short circuit protection.
Part Selection
Output
Voltage
0.8V-3.3V
Input
Voltage
3.0V – 5.5V
Max. Output
Current
12A
Max. Output
Power
39.6W
Typical
Efficiency
93%
Part Number
Surface Mount
S7AH-12F1A0
Part Number
Vertical Mount
V7AH-12F1A0
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Min
-0.3V
-0.3V
-40°C
-55°C
Typ
-
-
-
-
Max
6V
7V
85°C
125°C
Notes
Input Specifications
Parameter
Input Voltage
Input Current (no load)
Input Current (full load)
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
V
O
=1.0V
V
O
=0.9V
Remote Off Input Current
Input Reflected Ripple Current (pk-pk)
Input Reflected Ripple Current (RMS)
I
2
t Inrush Current Transient
Turn on Voltage Threshold
Turn off Voltage Threshold
1
Min
3V
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-
-
-
-
-
-
-
-
-
-
-
-
Typ
-
120mA
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-
-
-
-
-
-
2mA
100mA
35mA
0.09A
2
s
2.1V
2V
Max
5.5V
200mA
11A
10.5A
9.0A
8.1A
6.5A
5.2A
3.2A
5mA
150mA
60mA
0.2A
2
s
-
2.4V
Notes
With simulated source impedance of
500nH, 5Hz to 20MHz; use a
270uF/16V cap with ESR=0.0018 ohm
max at 100KHz
Note:
1. The input voltage range of 3.3V output module is 4.5V-5.5V and that of 2.5V module is 3.6V-5.5V.
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. ]
