BQ34110: Can we use BQ34110 for Ultra Low Current consumption Product: device current consumption is 10 - 20 uA

Himansu Donga

Prodigy 10 points

Part Number: BQ34110

Hi,

BQ34110 can use for 10-20 uA Sensor device battery life and Power consumption calculation?

Please suggest any other IC for above application.

I want to calculate power consumption and battery life of my device.

Current Consumption Average = 10 - 20 uA

Input Voltage: 6V (4 cell battery pack)

Regards,

Himansu

over 7 years ago

0 David Hien over 7 years ago

TI__Genius 10830 points

Hi Himansu,
Your post has been assigned to one of our BMS experts.

Regards,
David

0 David Hien over 7 years ago in reply to David Hien

TI__Genius 10830 points

hi Himansu,
Do you have the chemistry of the battery?
Do you want to find a gauge that consumes 10-20uA or do you want to measure 10-20uA?

Regards,
David

0 Bryan Kahler over 7 years ago in reply to David Hien

TI__Mastermind 25955 points

Hi Himansu,

Could you please clarify the chemistry - is this for a NiMH or a NiCd device?

The measurement will also include the power consumption of the battery gauge due to the location of the current sense resistor, which may be variable.

The maximum allowable drop across the current sense resistor is 125 mV, so the current sense resistor will need to be sized to not exceed 125 mV at your maximum current. What size is the current sense resistor planned for your design?

Sincerely,
Bryan Kahler

Power management

Power management forum

BQ34110: Can we use BQ34110 for Ultra Low Current consumption Product: device current consumption is 10 - 20 uA