SRDB-08C250R Bel Fuse Inc, SRDB-08C250R Datasheet

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SRDB-08C250R

Manufacturer Part Number
SRDB-08C250R
Description
CONV DC/DC 8A 3.3V 2.5VOUT SMD
Manufacturer
Bel Fuse Inc
Series
SRDB-08Cr
Type
Point of Load (POL) Non-Isolated with Remote On/Off and UVLOr
Datasheet
1.SRDB-08C120G.pdf (13 pages)

Specifications of SRDB-08C250R

Output
2.5V
Number Of Outputs
1
Power (watts)
20W
Mounting Type
Surface Mount
Voltage - Input
3.3V
Package / Case
12-DIP SMD Module
1st Output
2.5 VDC @ 8A
Size / Dimension
1.22" L x 0.83" W x 0.35" H (30.99mm x 21mm x 8.76mm)
Power (watts) - Rated
20W
Operating Temperature
-40°C ~ 85°C
Efficiency
92%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-
Description
The Bel SRDB-08C 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 packaged in a compact,
low profile, surface mount DIP package for ease of layout and space savings. 8A maximum output is also provided. Standard
features include remote on/off, over current and short circuit protection, UVLO 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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Distributed power architectures
Data networking equipment
Telecommunications
Computers and peripherals
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NON-ISOLATED DC/DC CONVERTERS
3.3V Input / 1.2V – 2.5V Output / 8A
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SRDB-08C 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
Remote sense
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©2006 Bel Fuse Inc.
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Specifications subject to change without notice. 06.06
POWER PRODUCTS
BP06SRDB-08C
page 1

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Request R
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Part Number:
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Description:
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SRDB-08C250R Summary of contents

Page 1

... Remote sense Description The Bel SRDB-08C 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 packaged in a compact, low profile, surface mount DIP package for ease of layout and space savings. 8A maximum output is also provided. Standard features include remote on/off, over current and short circuit protection, UVLO and output voltage adjust ...

Page 2

... POWER PRODUCTS BP06SRDB-08C Absolute Maximum Ratings Note: Use beyond the maximum ratings may cause a reliability degradation of the DC/DC converter or may permanently damage the device. Input Specifications Note: Input capacitance two 270µF/10V, ESR = 0.018 1. With simulated source impedance of 500nH, 5Hz to 20MHz. ...

Page 3

... Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com POWER PRODUCTS BP06SRDB-08C µ F ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 page 3 ...

Page 4

... POWER PRODUCTS BP06SRDB-08C Output Specifications Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated. 3. di/dt = 0.5A/1µ 25° C with a 470µF Tantalum cap at output. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com ...

Page 5

... 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 POWER PRODUCTS BP06SRDB-08C ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 page 5 ...

Page 6

... POWER PRODUCTS BP06SRDB-08C Efficiency Data Module 2.5V 96% 95% 94% 93% 92% 91% 90% 89% 88% 87% 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 Output Current Module 1.5V 92% 91% 90% 89% 88% 87% 86% 85% 84% 83% 82% 81% 80% 1.0 2.0 3.0 4.0 5.0 6.0 O utput Current ©2006 Bel Fuse Inc. ...

Page 7

... Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com POWER PRODUCTS Ripple and noise at full load and 3.3Vdc input, 1.8Vdc output and Ta=25° C Ripple and noise at full load and 3.3Vdc input, 1.2Vdc output and Ta=25° C ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 BP06SRDB-08C page 7 ...

Page 8

... POWER PRODUCTS BP06SRDB-08C Transient Response Transient response: di/dt = 0.5A/µS, external load capacitance Co=470µF (Tantalum capacitor) Vout=2.5V 50% to 100% load transients at 3.3V input and Ta=25° C Vout=1.8V 50% to 100% load transients at 3.3V input and Ta=25° C ©2006 Bel Fuse Inc. ...

Page 9

... 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 3.3V input and Ta=25° C Vout=1.2V 100% to 50% load transients at 3.3V input and Ta=25° C ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 BP06SRDB-08C page 9 ...

Page 10

... POWER PRODUCTS BP06SRDB-08C Thermal Considerations Derating Curve Output Voltage Set-Point Adjustment Trim Down Test Circuit ©2006 Bel Fuse Inc. Specifications subject to change without notice. 06.06 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com ...

Page 11

... NON-ISOLATED DC/DC CONVERTERS 3.3V Input / 1.2V – 2.5V Output / 8A Output Voltage Set-Point Adjustment SRDB-08C250 Trim Resistor Calculation 9.590 ( Rtrim down = – 14.29 Vo – Vo, adj 4.504 ( Rtrim up = – 8.66 Vo, adj – Vo 300 270 240 210 180 150 120 1.5 1.53 1.56 1.59 1 ...

Page 12

... Kohm 1.25 300 270 240 210 180 ) Kohm 150 120 1.5 SRDB-08C120 Trim Resistor Calculation Rtrim down = 1.14 1.16 1.18 1.2 Rtrim up = 1.34 1.36 1.38 1.4 1.27 1.3 1.33 1.35 1.38 1.4 1.43 1.45 1.48 Adjust ed outp ut voltage Vo,adj (V) 1.54 1.58 1 ...

Page 13

... Bel Fuse Ltd Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com POWER PRODUCTS BP06SRDB-08C 0.669 [17.00] 0.079 [2.00] Specifications subject to change without notice. 06.06 EUROPE Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U ...

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