LM9061: Bidirectional switch with reverse overcurrent protection

Oskar L.

Part Number: LM9061
Other Parts Discussed in Thread: LM5060EVAL, LM5060

Hi Experts,

I wanted to try LM9061 as a bidirectional switch with reverse overcurrent protection from the datasheet page 24 and the picture below:

I noticed undesirable behavior of the circuit in case the divers are turned off ON/OFF = 0, and there is nothing connected to the I/O 2 (no load).

When I supply the input I/O 1 (12V), the voltage appears at the output (about 3,4V) in spite of transistors are opened.

Is this the expected behavior of the circuit?

over 2 years ago

+1 Avishek Pal over 2 years ago

TI__Mastermind 41240 points

Hi Oskar,

This is an expected behavior because of MOSFET drain to source leakage current and the leakage through the threshold pin in LM9061.

0 Oskar L. over 2 years ago in reply to Avishek Pal

Prodigy 10 points

Thank you. I also tried two LM5060EVAL boards in the same configuration and there seems to be no leakage through the LM5060s. I'm just wondering if this mirror connection is recommended for LM5060 as there is no mention of it in the datasheet?

0 Avishek Pal over 2 years ago in reply to Oskar L.

TI__Mastermind 41240 points

I am not sure about LM5060. Please submit a separate post regarding LM5060.

Power management

Power management forum

LM9061: Bidirectional switch with reverse overcurrent protection