Hello
On PCM1808-Q1 datasheet, there is no Thermal information table.
we can find Thermal information table on PCM1808 datasheet.
are θjc and ψjt same as PCM1808?
we can find θjA of PCM1808-Q1. but it is too high.
regards,
suzuki
The listed Qj-a for PCM808-Q1 is 170 degC/w
If you look at the above table Pdis=Vcc*icc+Vdd*Idd
Pdis=5v*8.6ma +3.3v*5.9ma
Pdis=62.47mw.
This gives a junction temperature higher then ambient of 170*0062 or 10.5 deg celcius rise above ambient.
The Qja of 170 to me seems reasonble
Hello, Sanjay,
We understand θjA = 170 degC / W is reasonable considering Pdis in milliwatt order.
Why is it θjc and ψjt not given in the datasheet of PCM1808-Q1 unlike PCM1808?
Can we use these values in the PCM1808 for PCM1808-Q1 as well since it has a same package?
*from PCM1808
Best Regards,
Masaru Oinaga
