sam.moshiri Posted March 12, 2020 Report Share Posted March 12, 2020 LM317 is one of the most popular adjustable regulator chips. The output voltage of the regulator can be adjusted from 1.25V to 35V. However, the chip can deliver currents up to 1.5A which is not enough for some power applications. In this article/video, I will discuss two methods of LM317 current boosting, using power PNP and NPN pass transistors. References Article: https://www.pcbway.com/blog/technology/LM317_Current_Boosting_Secrets.html [1]: LM317 Datasheet: http://www.ti.com/lit/ds/slvs044x/slvs044x.pdf [2]: LM317 Library: https://componentsearchengine.com/part.php?partID=299235 [3]: MJ2955 Datashet: https://www.mouser.com/datasheet/2/308/2n3055-d-1190033.pdf [4]: MJ2955 Library: https://componentsearchengine.com/part.php?partID=697997 [5]: 2N3055 Datahseet: https://www.onsemi.com/pub/Collateral/2N3055-D.PDF [6]: 2N3055 Library: https://componentsearchengine.com/part.php?partID=788620 [7]: CAD Plugins: https://www.samacsys.com/library-loader-help Quote Link to comment Share on other sites More sharing options...
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