LM74502-Q1: MOSEFET review

PYTsai

Part Number: LM74502-Q1

Can this MOSFET SiA108DJ https://www.vishay.com/docs/77827/sia108dj.pdf be used for this 24V protection circuit? or any other MOSFET suggestion with smaller size?

also can this circuit pass ISO7637-2 3a and 3b test pulse up to +200V and -600V with this MODFET SiA108DJ (80V rating) ?

over 1 year ago

0 PYTsai over 1 year ago

TI__Genius 11125 points

Forget to mention that the peak current is 6A, and continuous current is 2A

0 Praveen GD over 1 year ago in reply to PYTsai

TI__Guru 57737 points

Hi PYTsai,

SiA108DJ FET looks okay to be used along with LM74502-Q1 for 24V battery application. We cannot suggest MOSFET but can help confirm if the chosen FETs are suitable or not.

Yes, the circuit pass ISO7637-2 3a and 3b test pulse up to +200V and -600V. These pulses are very low energy pulses and can be easily suppressed by the input/output capacitor and TVS diodes.

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LM74502-Q1: MOSEFET review