Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
2.5V Input / 1.0 1.5V Output / 10A
Compact surface mount package
Excellent thermal performance
High efficiency means less power dissipation
Remote
on/off
Low
cost
Description
The S/V7AH-10J Series are non-isolated step down DC/DC converters that operate from a nominal 2.5V
source. These converters are available in a range of output voltages from 1.0V to 2.5V. They are offered in a
compact ovemolded package rated at 10A. Optional lead-forming provides a vertical mount product for minimal
footprint or a surface mount option for very low profile. Standard features include remote on/off, over current
protection and output voltage adjust. These products maybe used almost anywhere low-voltage silicon is being
employed and a 2.5V source is available. Typical applications include file servers, routers, line cards, and other
computing and communications equipment.
Part Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Part Number
Surface Mount
Part Number
Vertical Mount
1.5V 2.5V 10A 15W 85%
S7AH-10J150
V7AH-10J150
1.2V 2.5V 10A 12W 83%
S7AH-10J120
V7AH-10J120
1.0V 2.5V 10A 10W 81%
S7AH-10J100
V7AH-10J100
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage Range
2.25 VDC
2.75 VDC
Input Current (no load)
30mA
Input Current (full load)
8.0A
(worst case)
Reflected Ripple Current
(pk-pk)
200mA
pk-pk
60mA rms
With a simulated source
impedance of 500nH, 5Hz to
20 MHz
Output Specifications
Parameter
Min
Typ
Max
Notes
Voltage Adjustability
90%
110%
Output Current
0A
10A
Setpoint Accuracy
-2.0%
+2.0%
Total Regulation
1.5V
1.2V
1.0V
60mV
48mV
40mV
Includes line, load and
temperature.
Ripple and Noise
100mV pk-pk
25mV rms
0 to 20MHz Bandwidth
Use 0.1uF ceramic on output
S7AH-10J / V7AH-10J Series PRELIMINARY
2003 Bel Fuse Inc. Specifications subject to change without notice. 032403
CORPORATE FAR
EAST
EUROPE
Bel Fuse Inc.
Bel Fuse Ltd.
Bel Fuse Europe Ltd.
206 Van Vorst Street
8F/ 8 Luk Hop Street
Preston Technology Management Centre
Jersey City, NJ 07302
San Po Kong
Marsh Lane, Suite G7, Preston
Tel 201-432-0463
Kowloon, Hong Kong
Lancashire, PR1 8UD, U.K.
Fax 201-432-9542
Tel 852-2328-5515
Tel 44-1772-556601
www.belfuse.com
Fax 852-2352-3706
Fax 44-1772-888366
www.belfuse.com
www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
2.5V Input / 1.0 1.5V Output / 10A
Output Specifications (continued)
Parameter
Min
Typ
Max
Notes
Transient Response
Max deviation
Recovery to within 1%
160mV
60uS
di/dt = 0.5A/uS, Vin =3.3VDC
Ta = 25
C, 50-100% load
change with 220uF tantalum
external capacitance.
General Specifications
Parameter
Specification
Switching Frequency
300kHz typical (fixed)
Dimensions
inches
mm
0.7 x 0.65 x 0.32
17.78 x 16.51 x 8.13
Weight 5
g
Operating Temperature
-40
C to 85C
(see derating curve)
Non-Operating Temperature
-40
C to 125C
Protection Features
Short circuit
Over current
Continuous
130% to 250% max Io
Remote On/Off
Active High
Pin Connections
Pin
Function
1 On/Off
2 Vin
3 Ground
4 Vout
5 Trim
6
(S7AH only) NC
7
(S7AH only) NC
S7AH-10Jxxx
V7AH-10Jxxx
b e l
b e l
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