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| High Efficiency, Sub-miniature Step Down Regulators Are Pin- and Size-Compatible With LM78xx Linears
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Full-load, +70°C operation from 7.5 to 36V supplies without heat sinks or fans outputs
- 3-pin sub-miniature SIP package fits LM7805 and LM7812 footprints
- Up to 95% efficiency-no heat sinks, fans, or derating for +70°C operation
- 3.3V@0.5A, 5V@0.5A or 12V@0.4A low-noise outputs (<10mVp-pk)
- +7.5-36Vdc input range; Ultra-low 3mA quiescent current
- No external I/O capacitors required; Occupies <0.1 square inch pc-board space
- Excellent load (±0.2% max.) and line (±0.3% max.) regulation
- Ideal for powering portable instrumentation from 9V/12V/24V/28V batteries
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June 2006, Mansfield, Massachusetts
Murata Power Solutions
series of Datel 78SR switching regulators are perfect for cost-sensitive applications where the maximum load current is ½ an amp or less. 7805SR (+5V/0.5A), 7812SR (+12V/0.4A) and 7803SR (+3.3V/0.5A) are high efficiency, easy-to-use, drop-in replacements for power-hungry LM78xx linear regulators. They're 100% pin- and size-compatible with industry-standard, 3-pin TO-220 plastic packages.
Two package styles are available: a standard vertical-mount SIP that occupies less than 0.1 square inch of pc-board real estate, and a horizontal-mount version that allows for an installed height of less than 0.350 inches.
78SR Series' 260KHz switching frequency produces efficiencies as high as 95% for 12V models, and 85% for 3.3V and 5V models. Full-load operation from 9V, 12V, 24V, 28V or 36V supplies-at ambient temperatures as high as +70°C-requires no heat sinks, no forced-air cooling, and no temperature derating, making the 78SR a cost-effective alternative in new and existing LM7805/LM7812 designs. And the high efficiency can dramatically increase battery life in portable instrumentation and standby-power applications and other applications that require full-load operation at elevated supply voltages and/or elevated temperatures.
78SR Series switching regulators offer additional improvements over their linear counterparts, including lower quiescent current (3mA vs. 5 mA), higher operating input voltage (+36V vs. +32V), and significantly tighter output accuracy (±1.5% vs. ±5%). Their excellent line and load regulation of ±0.3% and ±0.2%, respectively, allows operation from poorly-regulated dc supplies. And, unlike their linear counterparts, these switchers don't need any external input or output capacitors to provide stable, low-noise outputs.
View Product Datasheet >>
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Further editorial information from:
John Sutherby, Marketing Communications Director
Murata Power Solutions
Tel: 1+ 508.339.3000 x117 Fax: 1+ 508.339.6356
E-mail: jsutherby@murata-ps.com
Contact details for publication:
Murata Power Solutions, Inc.,
11 Cabot Boulevard
Mansfield, MA 02048-1151, USA
Power Electronics Division
11 Cabot Boulevard
Mansfield, MA 02048-1151, USA
Tel: 1+ 508.339.3000 Fax: 1+ 508.339.6356
Product URL: www.murata-ps.com
e-mail: usmedia@murata-ps.com |
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About Murata Power Solutions
Murata Power Solutions, (www.murata-ps.com) is headquartered in Mansfield, Massachusetts, with over 1,300 employees, and locations in the USA, Canada, Mexico, England, France, Germany, Tokyo and China. Murata Power Solutions designs, manufactures and distributes DC/DC Converters, AC/DC Power Supplies, Magnetics, Data Acquisition devices and Panel Meters, and offers these products in custom, standard and modified-standard variations. These products, which are built to exacting requirements in ISO9000:2000-approved facilities, are typically used worldwide within telecommunications, computing, industrial and other high-tech applications
About Murata
Based in Kyoto Japan, Murata Manufacturing Company Ltd is one of the world's leading
providers of ceramic based components, sensors, and integrated electronic modules including
power supplies. Founded in 1950, the company has over 26,000 employees worldwide, and over
$4.9 billion US in consolidated annual sales (as of March 31, 2007). Murata's Power supply
division is one of the world's leading providers of AC/DC and DC/DC power solutions, focusing
primarily on the consumer, communications, computing and industrial markets worldwide.
Everywhere in the world, wherever you can reach, Murata's electronic components are always at
work. For more information about Murata, visit http://www.murata.com
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| June 2006 Ref. CD210A LM78SR Regulators |
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