I have built a circuit board with LT1716 and while testing I noticed that the output voltage through a resistor divider was a little lower than what I was expecting. Looking back in the datasheet I noticed that LT1716 has a typical sourcing current of 110uA (I am using the LT1716H) and minimum sourcing current of 60uA.
The input voltage (Vcc) is 32V. The output goes through a resistor divider to ground (100k is the top resistor and 40.2k is the bottom resistor).
Looking at the output circuitry internal to the LT1716, the datasheet schematic looks like the sourcing output is a current mirror. I do not have much experience with these when used with BJTs, but understand the basic operation. I noticed that there is no MAX value of the sourcing current in the datasheet, why is this?
When the output is high, the middle of the voltage divider reads 6.90V when the input is 32V. Given the 100k and 40.2k resistor divider I was expecting 9.175V, so the output drive circuitry is current limiting. The 9.175V is used to bias a gate of an N-Channel MOSFET with a Vgs MAX of ~3.5V. 6.90V is more than enough voltage to turn on the N-Channel MOSFET, is there a concern leaving this circuit in an over driven state given it is a current mirror? Why does the datasheet not have a Max value called out for this?