BQ27750: without button WakeUp

Andrew Buckin

Part Number: BQ27750

Hello. I make battery power for my RPi and use the BQ27750 FW (bq27750_v0_05_build_13.srec). Help with the settings of the FW.

I want the b27750 to turn itself on without pressing the WakeUp button.

Now I need to either press a button or connect a charger.

thanks

Andrew.

over 5 years ago

0 Kang Kang over 5 years ago

TI__Mastermind 24870 points

Hello Andrew,

Unfortunately there is no setting to wake up the device without a button press or charger connect. You will need to toggle a GPIO to control external circuit to put a positive voltage on Pack pin. This is the only way to wake up the chip from shutdown or cell attach.

0 Andrew Buckin over 5 years ago in reply to Kang Kang

Expert 2130 points

Thanks. please tell me which of Gas Gauge for 1 Series may wake up from cell attach?

Andrew.

0 Kang Kang over 5 years ago in reply to Andrew Buckin

TI__Mastermind 24870 points

Hello Andrew,

The bq275xx series such as the bq27542 or bq27546.

The bq27520-G4, bq27z561 are all good options.

Power management

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BQ27750: without button WakeUp