BQ25173: Looking for similar ICs

Audrey M

Part Number: BQ25173

Tool/software:

Hello,

I am searching for chips to charge a super capacitor. We already have circuitry designed to provide input power. We do not need any power harvesting features. Ideally, the IC would be very simple (<16 pins).

So far I have looked in the Battery charger ICs category and found BQ25173 (and BQ25173-Q1). Is there anywhere else I should search to find similar components? Any recommendations for similar parts?

Thanks.

10 months ago

0 Bill Johns 10 months ago

TI__Guru* 75886 points

Hello

What are your requirements for super capacitor charger?

0 Audrey M 10 months ago in reply to Bill Johns

Prodigy 10 points

The supercapacitor is not yet chosen, we are very early in design. It will be at a voltage of either 5 or 12V. In our current revision, the max power we can draw to power the cap charger and the rest of our circuit is about 3.5W at 5V.

0 Bill Johns 10 months ago in reply to Audrey M

TI__Guru* 75886 points

Hello

The BQ25173 (173-Q1) will support 5V capacitor bank. But max output voltage is 10V and it will not support 12V output.

BQ25173 is a linear regulator that is small and easy to implement.

For higher power a switching converter may work better. Larger solution size and possible EMI.

Also would need to know charge time, does the backup capacitor need to be charged quickly.

0 Audrey M 10 months ago in reply to Bill Johns

Prodigy 10 points

It sounds like there are not other options for me to look at. Thanks for your help.

Power management

Power management forum

BQ25173: Looking for similar ICs