Juction Temp L6235Q

[ross_atkinson]

Hi the datasheet does not contain the thermal junction temperatures for the VFQFPN48, hence hard to work out the max thermal temps for the device. please can you supply

regards

Ross

[Peter BENSCH]

The data sheet, table 2 mentiones for the operating junction temperature Tj a range of -25...125°C.

Does it answer your question?

Regards
/Peter

[ross_atkinson]

Hi Peter , no as the standard L6235 has a table that you can work out the IC temp for a given PCB layout. see below. without this you can not work out the IC temp. I have worked out the IC power but need this to make sure I can apply the brake without blowing the IC 

cheers

Ross

 

[Peter BENSCH]

I see... the thermal resistance is missing.

I don't have any data available like for the L6235, but you can probably assume an Rth(ja) of 25...50K/W, depending on whether you connect the NC pins to the cooling GND surface, use thermal vias and what type of board you use. Much more important, however, is probably Rth(j-case), which will probably be around 1.5K/W.

However, you are welcome to create a ticket with the personal Online Support OLS and request exact thermal resistance values.

Hope that helps?

Regards
/Peter