BQ24195L: Load capability of SYS pin without a battery

Yue TANG

Part Number: BQ24195L
Other Parts Discussed in Thread: BQ24190, BQ24195

Hi,

My customer is checking with me, if no battery load, How many current SYS pin can provide? I'm not sure if device will be in a HIZ without battery, or, just treat it as a buck converter：2.5A max, but depend on adapter capability.

over 4 years ago

0 Ning T over 4 years ago

TI__Guru 57341 points

Hi,

1.2.5A maximum SYS load without battery if the adaptor may support the power.

2. When valid VBUS is present, VBUS support VSYS even if charge is disabled.

Please visit https://e2e.ti.com/support/power-management/f/196/t/877725 for BQ2419X: Schematic Review and PCB Layout Design Tips and https://e2e.ti.com/support/power-management/f/196/t/875388 for BQ2419X/2429x FAQs. BQ24195/L is similar to BQ24190. FAQ#1 and FAQ#2 should be helpful to your questions.

Thanks,

Ning.

Power management

Power management forum

BQ24195L: Load capability of SYS pin without a battery