VRAH-05B1800 Bel Fuse Inc, VRAH-05B1800 Datasheet

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VRAH-05B1800

Manufacturer Part Number
VRAH-05B1800
Description
CONV DC/DC 5A 5V 1.8V OUT
Manufacturer
Bel Fuse Inc
Series
VRAH-05Br
Type
Point of Load (POL) Non-Isolated with Remote On/Off and UVLOr
Datasheet
1.SRAH-05B1800.pdf (15 pages)

Specifications of VRAH-05B1800

Output
1.8V
Number Of Outputs
1
Power (watts)
9W
Mounting Type
Through Hole
Voltage - Input
5V
Package / Case
5-SIP Module
1st Output
1.8 VDC @ 5A
Size / Dimension
0.70" L x 0.31" W x 0.65" H (17.8mm x 7.9mm x 16.5mm)
Power (watts) - Rated
9W
Operating Temperature
0°C ~ 70°C
Efficiency
86%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-
Other names
VRAH-05B180
Description
The Bel SRAH-05B and VRAH-05B modules are a series of non-isolated, step down DC/DC power converters that operate
from a nominal 5V source. These converters are available in a range of output voltages from 1.2V to 3.3V. They are packaged
in a compact, overmolded package rated at 5A. 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
5V 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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5V Input / 1.2V – 3.3V Output / 5A
SRAH-05B / VRAH-05B 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
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Specifications subject to change without notice. 02.06
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page 1

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VRAH-05B1800 Summary of contents

Page 1

... Over current and short circuit protection Description The Bel SRAH-05B and VRAH-05B modules are a series of non-isolated, step down DC/DC power converters that operate from a nominal 5V source. These converters are available in a range of output voltages from 1.2V to 3.3V. They are packaged in a compact, overmolded package rated at 5A. Optional lead forming provides a vertical mount product for minimal footprint or a surface mount option for a very low profile ...

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 5V Input / 1.2V – 3.3V Output / 5A ...

Page 3

... Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated. 1. Vin = 5V, 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 5V Input / 1.2V – 3.3V Output / 5A ...

Page 5

... Vin=5V, full load and Ta=25° See graphs on pages 10-12. Control Specifications With remote on/off pin 1 open, the module is on. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com POWER PRODUCTS BP06xRAH-05B ...

Page 6

... 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 5V Input / 1.2V – 3.3V Output / 5A 95% 94% 4 ...

Page 7

... Ripple and noise at full load and 5Vdc input, 1.8Vdc output 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 Ripple and noise at full load and 5Vdc input, 2.5Vdc output and Ta=25° C Ripple and noise at full load and 5Vdc input, 1.5Vdc output and Ta=25° ...

Page 8

... Ta=25° C ©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 5V Input / 1.2V – ...

Page 9

... Ta=25° C Vout=1.2V 50% to 100% load transients at 5V 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=1.5V 100% to 50% load transients at 5V input and Ta=25° C Vout=1.2V 100% to 50% load transients at 5V input and Ta=25° ...

Page 10

... 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 10 NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 5A SRAH-05B VRAH-05B ...

Page 11

... Rtrim down = – 8.27 Vo – Vo, adj 2.528 ( Rtrim up = – 5.11 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 270 240 210 180 ) Kohm 150 ...

Page 12

... Adjusted output voltage Vo,adj(V) ©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 5V Input / 1.2V – 3.3V Output / 5A ...

Page 13

... Adjusted output voltage Vo,adj(V) Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 270 240 210 180 150.01 120.01 90.01 ) 60.01 Kohm 30 ...

Page 14

... N o ©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 14 NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 5A Suggested PCB Pad Layout ...

Page 15

... NON-ISOLATED DC/DC CONVERTERS 5V Input / 1.2V – 3.3V Output / 5A Mechanical VRAH-05B 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 ...

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