Our design uses the Reg102-5 to bias a RF amplifier and an InGaAs photodiode. The input to the Reg102-5 is 5.5V supplied by a LTM4612 DC/DC converter and bypassed by a 10uF tantalum capacitor. The output is also bypassed by a 10uF capacitor (See attached Schematic). We have sporadically had failures of this circuit after a power cycle. When the circuit fails the output voltage of the reg102-5 is negative with respect to ground (appoximately -400mV)
the correct and expected value of 5V. Can somebody please help explain this phenomenon? Basically, under what conditions will the reg102-5 fail to regulate and supply
a negative voltage at the output with respect to ground? If additional details or information is needed please do not hesitate to ask.