BQ24640: Output Current Regulation

Shotaro Sakai

Intellectual 2970 points

Part Number: BQ24640

Hello team,

When we want to set 10mA as charging current, how value is right as RSR?

Best regards,

Shotaro

over 1 year ago

0 Christian Moyer over 1 year ago

TI__Mastermind 19750 points

Hello Shotaro,

Here is the equation for setting the charge current. The charge current is dependent on the V_ISETvalue. Without the knowing the V_ISETvalue I can't determine the RSR value, but you will be ableto dermine the value using this equation.

Best Regards,

Christian.

0 Shotaro Sakai over 1 year ago in reply to Christian Moyer

TI__Intellectual 2970 points

Hello Christian-san,

Thank you for the comment.

Is VISET value corresponding to VREF value and it should be set under 2V, right?

Best regards,

Shotaro

0 Christian Moyer over 1 year ago in reply to Shotaro Sakai

TI__Mastermind 19750 points

Hello Shotaro,

Shotaro Sakai said:
Is VISET value corresponding to VREF value and it should be set under 2V, right?

It refers to the voltage set through a voltage divider from VREF to ISET and to GND. Yes, it should be set to 2V or lower.

Best Regards,

Christian

Power management

Power management forum

BQ24640: Output Current Regulation