TPS40200-HT: SS pin resistor

Kuramochi Tadahiko

Guru 28715 points

Part Number: TPS40200-HT

Hi,

1M ohm register is connected on reference circuit as below.

Why is this register located?

What is a risk if there is not this resistor?

Best Regards,

Kuramochi

over 5 years ago

0 Daniel Hartung over 5 years ago

TI__Mastermind 22035 points

Hey Kuramochi,

The resistor is added to help discharge the capacitor in case the IC turns off.

If the resistor is not included the device may have an incorrect soft start time if repeatedly turned on and off.

Thanks,
Daniel

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TPS40200-HT: SS pin resistor