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TPS62730 with Li-ion Battery

Cedric Saab
Prodigy 230 points
Other Parts Discussed in Thread: TPS62730, CC2540, TPS62230

Hello all,

For my application I would like to use the TPS62730 with the CC2540 as it is advised in the datasheet in order to reduce the power consumption. However, the battery used in my product is a Li-ion battery with a maximum voltage of 4,2V-4,25V. The TPS62730 allows input voltage from 1,9V to 3,9V and an absolute maximum voltage of 4,2V. Do you have any solution for optimizing the consumption? Is there an other chip working with such batteries?

Thank you for your help.

 Best regards

 CS

  • 0
    TI__Guru**** 150950 points

    The TPS62730 is not designed for use with a 4.2V lithium battery source.  As you pointed out, this voltage is too high for the IC and could damage it.  It is optimized for operation with coin cells.  Can the CC2540 even tolerate a 4.2V power supply?

    Other devices to look at would be the TPS62230 or an LDO, such as the TPS78001.  You might also post in the low power RF forum to see what they recommend.

  • 0 in reply to Chris Glaser
    Prodigy 230 points

    Thank you for your answer. The TPS62230 seems to be interesting, I asked on the RF forum if they can recommend me an other device as you said.

    CS