TL431: Capacitance

GEO FRANCIS

Prodigy 220 points

Part Number: TL431

What will be the capacitance across the cathode and anode in the nonconducting state?

over 6 years ago

0 Marcoo Z over 6 years ago

TI__Mastermind 19580 points

Hi Geo,

Can you elaborate on nonconducting state? do you mean the TL431 is off?

-Marcoo

0 GEO FRANCIS over 6 years ago in reply to Marcoo Z

Prodigy 220 points

yes, .we are planning to connect this device to protect some overvoltage from the 100khz i2c line. in the off state, the capacitance will be impacted by rising and fall time. that is our concern. so please let me know the capacitance?

0 GEO FRANCIS over 6 years ago in reply to Marcoo Z

Prodigy 220 points

0 Trailokya Rai over 6 years ago in reply to GEO FRANCIS

TI__Genius 11401 points

Hi Geo

We simulated it for off case. (When Ref is connected to GND) for TL431LI. It is coming around 31pf. Hence You can assume around 50pF for TL431 for your rise/fall time calculation.

Regards

Trailokya

Power management

Power management forum

TL431: Capacitance