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Buck-Boost regulator, active current < 200uA

Bill Keith
Intellectual 300 points

I am in need of a Buck-Boost Regulator.

I need the regulator to use no more than 200uA while running/switching. 

  • 2.5V to 5.5V input, 3.8V output, 2A Max output
  • 2.5V to 5.5V input, 3.8V output, 1A Max output

 If that is hard to find maybe I can try just a boost with a 2.0 to 3.5V input and 3.8V output at 2A or at 1A

 Thanks.

  • 0
    TI__Expert 8420 points
    Hi Bill,

    We don't have a buck boost that consumes 200uA while swithching
    Could you be more precise "I need the regulator to use no more than 200uA while running/switching. "? For which operating conditions (Vin Vout and load)
    What drives the requirements of 200uA in a 2A application?

    Maybe a ultra low Iq boost plus bypass converter could be good for you current requirements.
  • 0 in reply to Sabrina
    Intellectual 300 points

    The regulator needs to be capable of sourcing 2A as it is for a CAT M1 cell module with GSM fall back.  In GSM mode pulses of up to 1.8A occur in bursts.  Most of the time the regulator load will be less than 1mA as this is a battery operated device and the cell module will be in low power mode.  I need the regulator to consume less than 200uA with a 3.3V input, 3.8V output and a load of less then 1mA.

    The regulator can just be a boost regulator as well with a Vin range of 2.5 to 3.6 and a Vout of 3.8V.

  • 0 in reply to Bill Keith
    TI__Mastermind 40080 points
    Boost converter TPS61021 can support 2.5-3.6Vin, 3.8V output at Io=1.8A. Still not clear what yout mean by 'the regulator to consume less than 200uA ', chould you use Iin/or eff. instead of the current consumed by the converter? because there's an inductor which also consume enery, so you can use a efficiency to specify your requirement.