TPS61030: recommendation resistor value for pull up or pull down LBI pin

Polly Chung1

Part Number: TPS61030

Dear team,

If I do not need use LBI function, what resistor value (R1 or R2) should I use for pull up or pull down LBI pin? Or I should just connect LBI pin to Gnd or Vcc directly without resistor?

Thank you.

Regards,

Polly Chung

over 5 years ago

0 Polly Chung1 over 5 years ago

TI__Intellectual 2110 points

Dear team,

Besides, what is going to happen if we keep LBI floating? Thanks you.

Best Regards,
Polly Chung

0 Zack Liu over 5 years ago in reply to Polly Chung1

TI__Mastermind 34201 points

Hi Polly,

If the low-battery detection circuit is not used, the LBI pin should be connected to GND (or to VBAT) and the LBO pin can be left unconnected. Do not let the LBI pin float.
If letting LBI float, this pin voltage may fluctuate up and down and cause higher quiescent current.

0 Polly Chung1 over 5 years ago in reply to Zack Liu

TI__Intellectual 2110 points

Hi Zack,

Thanks for your reply. How about the recommendation resistor value to pull down or up LBI pin? Or I should just connect LBI pin to Gnd or Vcc directly without resistor?

Thanks again.

Regards,

Polly

0 Zack Liu over 5 years ago in reply to Polly Chung1

TI__Mastermind 34201 points

Hi Polly,
Pull down LBI pin to GND without resistor.

Power management

Power management forum

TPS61030: recommendation resistor value for pull up or pull down LBI pin