What we have not been told is the condition which this transistor has to detect.
my post #10 shows what's going on......the PNP(s) is there to give detection of an open LED load.....the collector of Q2 will go low, if either or both of the LED loads goes open.
The resistor is 100R, 0603, but we can maybe change this to say 2512 to give good derating for the 0.175^2*10 = 306mW that it would be dissipating