BQ25125: output current ability of integrated LDO

Cindy Chang

Part Number: BQ25125

Hi expert,

May we have your help to check that the current ability could be 40mA of internal LDO at Vin=2.3V, Vout=1.8V?

We only know that current only 10mA @ Vin 2.2V, Vout 0.8V, so they're afraid that at Vin 2.3V, Vout 1.8V could support 40mA or not.

Thank you.

Best Regards,

Cindy

0 Juan Ospina over 1 year ago

Hi Cindy,

Allow me to make some measurements and I can provide you expected current limits for VINLS = 2.3V and VLDO = 1.8V.

Best Regards,

Juan Ospina

0 Cindy Chang over 1 year ago in reply to Juan Ospina

Hi Juan,

Thank you and looking forward to your feedback.

Best Regards,

Cindy

0 Juan Ospina over 1 year ago in reply to Cindy Chang

Hi Cindy,

Based on my testing:

- with a 2.3V VINLS the LDO can source 40 mA with a voltage output of 1.78V (~99% of 1.8V).

- It can source up to 65 mA and remain within 90% of 1.8V (1.62 V).

I hope that helps!

Best Regards,

Juan Ospina

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