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LM317A as a step up voltage regulator

Other Parts Discussed in Thread: LM317A

Would the LM317A work in an application as a step up regulator from 5V to 7V?

  • Hello Eugene,

    Linear regulators and LDOs cannot be used in step-up converter type applications. The output voltage is always lower than the input voltage.
    In order to boost a 5V signal to a 7V signal, you would have to use a step-up switching converter.

    WEBENCH is a good tool to help you find what you are looking for: www.webench.ti.com
    You can put in your input voltage, output voltage, and current requirements and it will provide suggestions for solutions:
    I ran a quick filter for you and the results are here:
    webench.ti.com/.../webench5.cgi

    Best,
    Michael