BQ27532-G1: Is there any available battery gauge chip that can measure uA level load current

shiping wang1

Part Number: BQ27532-G1

Hi,

We are currently using BQ27532-G1 which can only measure load current at mA level, but our whole embedded system application's power consumption is around 40 - 400 uAh, wondering is there any chip you recommend to use?

Thanks,

Shiping

over 5 years ago

0 Onyx Ahiakwo over 5 years ago

TI__Guru* 76230 points

Hi Shiping

We do not have any chip that can measure current at such low levels except you scale the current following the app note in the link below

http://www.ti.com/lit/an/slua792/slua792.pdf

I would however not recommend this as the current consumption of the battery gauge will compete and even trump the current draw of your system.

thanks

Onyx

Power management

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BQ27532-G1: Is there any available battery gauge chip that can measure uA level load current