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ST Microelectronics L5970A question

Discussion in 'Electronic Components' started by b60s, Nov 9, 2005.

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  1. b60s

    b60s Guest

    Hi all

    I'm using the L5970AD to provide a 3.3V supply, however the undervoltage
    lockout (UVLO) does not appear to operate when the input voltage drops
    too low for normal regulation to occur; that is, the output voltage does
    not shut down cleanly but droops at about 0.5V below the input voltage.
    This is proving a major problem as the equipment is battery operated
    some of the time. Does anyone have any info on what this device actually
    does or how the UVLO actually operates.

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