SRAH-05C1200 Bel Fuse Inc, SRAH-05C1200 Datasheet

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SRAH-05C1200

Manufacturer Part Number
SRAH-05C1200
Description
CONV DC/DC 5A 3.3V 1.2V SMD
Manufacturer
Bel Fuse Inc
Series
SRAH-05Cr
Type
Point of Load (POL) Non-Isolated with Remote On/Off and UVLOr
Datasheet
1.SRAH-05C1200.pdf (14 pages)

Specifications of SRAH-05C1200

Output
1.2V
Number Of Outputs
1
Power (watts)
6W
Mounting Type
Surface Mount
Voltage - Input
3.3V
Package / Case
7-DIP SMD Module
1st Output
1.2 VDC @ 5A
Size / Dimension
0.78" L x 0.70" W x 0.32" H (19.8mm x 17.8mm x 8.1mm)
Power (watts) - Rated
6W
Operating Temperature
-40°C ~ 85°C
Efficiency
83%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-
Other names
SRAH-05C120
Description
The Bel SRAH-05C and VRAH-05C 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 1.2V to 2.5V. They are pack-
aged 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
3.3V source is available. Typical applications include file servers, routers, line cards and other computing and communications
equipment.
Applications
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Part Number Selection
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Data networking equipment
Telecommunications
Computers and peripherals
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NON-ISOLATED DC/DC CONVERTERS
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SRAH-05C / VRAH-05C 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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page 1

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SRAH-05C1200 Summary of contents

Page 1

... Over current and short circuit protection Description The Bel SRAH-05C and VRAH-05C 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 1.2V to 2.5V. They are pack- aged in a compact, overmolded package rated at 5A ...

Page 2

... With simulated source impedance of 500nH, 5Hz to 20MHz. ©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05 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 / 1.2V – 2.5V Output / 5A ...

Page 3

... Vin = 3.3V, Iout = full load 25° 20MHz, 1µF ceramic cap and 10µF aluminum cap on output. 3. di/dt = 0.5A/1µ 25° C without external load capacitance. 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

... With remote on/off pin 1 open, the module is on. ©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05 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 / 1.2V – 2.5V Output / 5A ...

Page 5

... Output Current Module 1.5V 92% 90% 88% 86% 84% 82% 80 Output Current 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 94% 92% 90% 3.0V 88% 3.3V 86% 3.6V 84% 82 89% ...

Page 6

... Ta=25° C ©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05 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 / 1.2V – 2.5V Output / 5A Ripple and noise at full load and 3.3Vdc input, 1.8Vdc output and Ta=25° ...

Page 7

... Ta=25° C 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=2.5V 100% to 50% load transients at 3.3V input and Ta=25° C Vout=1.8V 100% to 50% load transients at 3.3V input and Ta=25° ...

Page 8

... Ta=25° C ©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05 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 / 1.2V – ...

Page 9

... Input / 1.2V – 2.5V Output / 5A Thermal Considerations Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com POWER PRODUCTS SRAH-05C VRAH-05C ©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05 BP05xRAH-05C ...

Page 10

... Vo, adj – Vo ©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05 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 / 1.2V – 2.5V Output / 5A ...

Page 11

... Rtrim down = – 18.54 Vo – Vo, adj 3.064 ( Rtrim up = – 14.7 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 x7AH-05C150 Trim Resistor Calculation Rtrim down = Rtrim up = ©2005 Bel Fuse Inc. ...

Page 12

... Vo, adj – Vo ©2005 Bel Fuse Inc. Specifications subject to change without notice. 03.05 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 / 1.2V – 2.5V Output / 5A ...

Page 13

... NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 1.2V – 2.5V Output / 5A Mechanical SRAH-05C 0.400 [10.16] 0.60 0.050 [15.24] [1.27] 0.70 [17.78] 0.012 [0.30] 0.050 [1.27] 0.100 [2.54] 0.400 4x [10.16] Dimensions are in inches [millimeters]. 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 ...

Page 14

... ©2005 Bel Fuse Inc. FAR EAST Bel Fuse Ltd Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com 0.020 [0.51 Specifications subject to change without notice. 03.05 EUROPE Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U ...

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