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BQ2973: Short circuit protection - BQ2973

Rodrigo Mendonca
Prodigy 10 points
Part Number: BQ2973

i’m designing a circuit to protect 3-6 Volts AA batteries when a short-circuit occurs. When the short-circuit happens, another circuit(LED blinking) must be triggered and the batteries must be protected. The goal is that the LED circuit won’t stop blinking until the short-circuit is undone. Could someone give me hand at selecting the best suitable devices to this application? Which one is a good choice -  to use BQ2973 or ideal diodes or eFuse or p-channel mosfets?

  • 0
    TI__Expert 7315 points

    Hi Rodrigo,

    The most important factor in determining which battery protector IC to use is the number of cells in series. The BQ2973 is only for 1S battery packs. 

    Once you determine how many cells are in series, you should determine what features you need. It sounds like short circuit protection is important to your application. This page on ti.com makes part selection really easy. Simply check which cell count and features you need in the "Features" section on the left.