LM338K Datasheet



The LM338K is an adjustable 3-terminal positive voltage regulator capable of supplying in excess of 5 A over a 1.2 V to 32 V output range. The LM338K is exceptionally easy to use and require only 2 resistors to set the output voltage. Careful circuit design has resulted in outstanding load and line regulation comparable to many commercial power supplies. The LM338K is supplied in a standard 3-lead transistor package. LM338K Features • Guaranteed 7A peak output current• Guaranteed 5A output current• Adjustable output down to 1.2V• Guaranteed thermal regulation• Current limit constant with temperature• P+ Product Enhancement tested• Output is short-circuit protected LM338K Applications • High Power Linear Regulator• Battery Chargers• Power Driver• Constant-Current Regulato


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Manufacturer information


Electrification, automation and digitalization are the long-term growth fields of Siemens. In order to take full advantage of the market potential in these fields, our businesses are bundled into eight divisions and Siemens Healthineers as well as Siemens Wind Power as a separately managed businesses.

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