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BQ24031: BQ24031

Joel Karminsky
Prodigy 40 points
Part Number: BQ24031
Other Parts Discussed in Thread: BQ25180, BQ25155

Hello, 

We use BQ24031 battery charger. Can I get a low battery indication using the charger itself or do I need additional voltage monitoring IC?

Thanks in advance and BR 

Joel 

  • 0
    TI__Mastermind 23170 points

    Hi Joel,

    As the BQ24031 is standalone, it's more restricted in what it can show and so there's no low battery indication. You're correct in that you'll need a voltage monitoring IC.

    If you're able to, the BQ25155 has a built-in ADC that can provide the battery voltage measurement. It is only max 500 mA so if that might be a problem, you can look into the BQ25180 which can provide a battery undervoltage lockout (BUVLO) threshold that can act as a low battery indicator.