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TPS61322: Disable TPS61322 when Vin is low

Part Number: TPS61322

Hello,

I'd like to use a TPS61322 on my circuit to boost the voltage from an AAA battery to 2.2V.

I read the datasheet and the min input voltage is 0.9V, my question is how can I disable the output when the input goes below 0.9V ?

I designed many voltage regulator, and I used SVS to disable the chip when the input was too low, but in this case the TPS61322 don't have the EN pin.

Can you suggest a solution o a different regulator ?

Thank you

Riccardo