I am using the following circuit in my design:
The desired behavior is the following: After
#ON is turned low, the
GATE output from
U5 goes high (VIN voltage + around 6 V) and
Q1 goes ON. After the
#ON goes high, the
GATE goes low (0 V) and
Q1 transistor is off.
For some PCB pieces I have noticed the following behavior: De-asserting
#ON (high state) doesn't make the
Q1 go off (even though
GATE voltage is 0 V).
Q1 will go off only after sufficient amount of load is applied to
VOUT (ie. I short
VOUT to ground with a 10R resistor).
What could be the case in here?