VRAH-07C2500 Bel Fuse Inc, VRAH-07C2500 Datasheet

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VRAH-07C2500

Manufacturer Part Number
VRAH-07C2500
Description
CONV DC/DC 7A 3.3V 2.5V OUT
Manufacturer
Bel Fuse Inc
Series
VRAH-07Cr
Type
Point of Load (POL) Non-Isolated with Remote On/Off and UVLOr
Datasheet
1.SRAH-07C1A00.pdf (14 pages)

Specifications of VRAH-07C2500

Output
2.5V
Number Of Outputs
1
Power (watts)
18W
Mounting Type
Through Hole
Voltage - Input
3.3V
Package / Case
5-SIP Module
1st Output
2.5 VDC @ 7A
Size / Dimension
0.70" L x 0.31" W x 0.65" H (17.8mm x 7.9mm x 16.5mm)
Power (watts) - Rated
17.5W
Operating Temperature
-40°C ~ 85°C
Efficiency
92%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-
Other names
VRAH-07C250
Description
The Bel SRAH-07C and VRAH-07C modules are a series of non-isolated, step down DC/DC power converters that operate
from a nominal 3.3V source. These converters are available in a range of output voltages from 0.9V to 2.5V. They are pack-
aged in a compact, overmolded package rated at 7A. Optional lead forming provides a vertical mount product for minimal
footprint or a surface mount option for a very low profile. Standard features include remote on/off, over current and short circuit
protection, and output voltage adjust. These products may be used almost anywhere low voltage silicon is employed and a
3.3V source is available. Typical applications include file servers, routers, line cards and other computing and communications
equipment.
Applications
•
•
•
•
Part Number Selection
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Distributed power architectures
Data networking equipment
Telecommunications
Computers and peripherals
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NON-ISOLATED DC/DC CONVERTERS
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3.3V Input / 0.9V – 2.5V Output / 7A
SRAH-07C / VRAH-07C Series
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Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
Nonisolated
Compact, low profile surface mount package
Fixed frequency
High efficiency means less power dissipation
Excellent thermal performance
Optimized for cost
Remote on/off
Undervoltage lockout (UVLO)
Over current and short circuit protection
Industrial temperature range -40° to +85° C
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Wide range adjustable output
©2006 Bel Fuse Inc.
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Specifications subject to change without notice. 02.06
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POWER PRODUCTS
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page 1

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VRAH-07C2500 Summary of contents

Page 1

... Industrial temperature range -40° to +85° C Description The Bel SRAH-07C and VRAH-07C modules are a series of non-isolated, step down DC/DC power converters that operate from a nominal 3.3V source. These converters are available in a range of output voltages from 0.9V to 2.5V. They are pack- aged in a compact, overmolded package rated at 7A ...

Page 2

... With simulated source impedance of 500nH, 5Hz to 20MHz. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 2 NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A ...

Page 3

... Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated. 1. Vin = 3.3V, Iout = full load 25° 20MHz, 1µF ceramic cap and 10µF aluminum cap on output. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com d u ...

Page 4

... Ta = 25° C without external load capacitance. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 4 NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A ...

Page 5

... Vin=3.3V, full load and Ta=25° See graphs on page 9. Control Specifications With remote on/off pin 1 open, the module is on. Note: On/off pin designed to work with an open collector/drain switch. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com ...

Page 6

... OUTPUT CURRENT ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 6 NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A ...

Page 7

... Transient response: di/dt = 0.5A/µS, no external load capacitance Vout=1.8V 50% to 100% load transients at 3.3V input and Ta=25° C Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com POWER PRODUCTS Vout=1.8V 100% to 50% load transients at 3.3V input and Ta=25° C © ...

Page 8

... Thermal Considerations ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 8 NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A SRAH-07C VRAH-07C ...

Page 9

... Rtrim down = – 13.83 Vo – Vo, adj 3.064 ( Rtrim up = – 10 Vo, adj – Vo Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com Trim Up Test Circuit Vo Trim Gnd ) Kohm ) Kohm ©2006 Bel Fuse Inc. ...

Page 10

... Vo, adj – Vo ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 10 NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A ...

Page 11

... Rtrim up = Vo, adj – Vo xRAH-07C090 Trim Resistor Calculation 0.3064 ( – 0.178 Rtrim up = Vo, adj – Vo Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com ) Kohm ) Kohm ) Kohm ©2006 Bel Fuse Inc. POWER PRODUCTS BP06xRAH-07C Specifications subject to change without notice ...

Page 12

... Note: Default output voltage of SRAH-07C1A0 is 1.8V ©2006 Bel Fuse Inc. Specifications subject to change without notice. 02.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com page 12 NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 0.9V – 2.5V Output / 7A ...

Page 13

... Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com Suggested PCB Pad Layout 0.065 [1.65] 0.855 0.050 [21.72] [1.27] 0.100 [2.54] 0.012 [0.30] 0.320 0.020 [8.13] [0.51] 0.780 4x [19.81] u ...

Page 14

... POWER PRODUCTS BP06xRAH-07C Mechanical VRAH-07C 0.600 [15.24] 0.050 [1.27] 0.100 [2.54] 0.400 [10.16] Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. These parts are not however compatible with the higher temperatures associated with lead free solder processes and must be soldered using a reflow profile with a peak temperature of no more than 240º ...

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