Is the PB137 *really* reverse protected?

Discussion in 'The Projects Forum' started by jsmith24, May 18, 2015.

  1. jsmith24

    Thread Starter New Member

    Jul 10, 2013
    16
    0
    Hi all,

    In building my little makeshift solar charge controller (panel is 1.5 Watts, maxes out around 250-290 mA), someone suggested I use a PB137 voltage regulator to regulate the voltage coming in for charging the SLA battery.

    My questions are these: Does the PB137 stop supplying output voltage if the input falls below its dropout limit? The datasheet specifies about 10 uA of reverse leakage current: has anyone used these that can verify that? Lastly, the supplied circuit in the datasheet has a cap on the input and output: are these just to filter the ripple, or are they absolutely necessary?

    Thanks,

    Jack
     
  2. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
    1,438
    368
    This may be useful:

    forum.allaboutcircuits.com/threads/pb137-problems.98646/
     
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