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R-78xx-0.5 series switching regulator available from Soanar

R-78xx-0.5 series switching regulator

This kind of a situation is possible: a regulated voltage supply is required. Not much board space is available. The input voltage supply is unstabilised and can vary over a wide range. The load is also not exactly steady.

But what if everything must be accommodated in a small case without ventilation and no heat-sinking can be used? Or if the regulator losses must be kept low because the unit is battery powered and one cannot afford to waste precious battery life as heat? Then it already looks more difficult using the standard off-the-shelf linear regulator solutions.

The remedy is a new switch-mode converter range that unites both the specifications and the simple application of the ubiquitous 78xx linear regulators with a high efficiency of up to 97% to give a minuscule heat generation that avoids all of the physical and mechanical problems associated with heat sinks and waste heat transportation.

Just like standard linear regulators, the R-78 series has a drop-out voltage of 1.5V and an input voltage range that extends up to 34V: an input range of up to 7:1.

All of the R-78xx-0.5 series deliver an output current of up to 500mA and R-78xx-1.0 types with up to 1A output current are in preparation. The output voltages are available off the shelf in all of the usual values of 1,8V, 2,5V, 3,3V, 5V, 9V and 12V as standard. Non-standard values can simply be set in the production by special request.

However, these are not the only advantages of this new converter.

Another attention-grabber is the design: the R-78xx-0.5 is accommodated in a SIP3-plastic housing with the measurements of only 11.5 x 7.5 x 10.2mm, therefore, approximating the footprint of a 78 series linear-regulator in TO220 casing without a heat-sink but with a clearance gap to the other components on the board. The pin-out is identical: Pin 1 is the input voltage, Pin 2 the common and Pin 3 the output.

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New Bus coupler for modular, decentralised LioN-Link System with PROFINET Interface available from Soanar (7-Nov-2008)
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HARTING’s new range of telecom solutions for outdoor environments available from Soanar (6-Nov-2008)
HARTING, whose products are distributed in ANZ by Soanar, have extended the Han Connector product range that includes the integration of the standard LC fibre optic connectors both in single mode and multi mode. These products meet the demands set by harsh outdoor environments.

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