Download Download lm317 calculator software LM337, Program to calculate the resistance to an LM317  LM117 lm337. Interesting for those who want to design circuits with donte horny LM317 regulators, is either easy to find the combination of resistors for a given output voltage.

The LM317 device is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5 A over an output-voltage range of 1.25 V to 37 V. It requires only two external resistors to set the output voltage. The device features a typical line regulation of 0.01% and typical load regulation of 0.1%. It includes current limiting, thermal overload protection, and safe operating area protection. Overload protection remains functional even if the ADJUST terminal is disconnected.

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• National Semiconductor Application Note 181
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