Hi Team,
Good day! I am posting this to help our customer and find solution for their concern. Kindly help.
I am not sure whether IO denotes just the output current iof one channel or it is the total sum of all channels output?
I made a test connecting all 5 outputs with a 2k2 resitors and observe a Sullpy current of ~14 mA in total.
After approx 30 sec something happens with the chip and supply current. It raises and my current limited voltage supply did reduce the supply voltage and the supply current of the device was reduce by this measure.
If I disconnect one resistor, the time to "abortion" is getting longer.
In chapter 6.8 of your data sheet (Safety limiting values your are giving value much as a multiply of 20 of the value I had adjusted. I assume that values result by a thermal balance of the chip.
a) what happens to chip for a load current of 5 channels each ~2 mA (2k2 @ 5V) ?
b) is IO = 15 mA (max rating) the total current into the chip which is in respect to the power dissipation, the heat sink and hence the heat transfer to the ambient?
If you like I could send you a picture captured by the oscilloscope of the supply voltage drop when loading the chip with the output current mentioned above.
Best regards,
Jonathan