When an unsafe power condition is detected this negative high voltage LTC4261IUFD-2#PBF from Linear Technology will automatically begin monitoring overvoltage and undervoltage conditions and open and close switches very quickly to protect your sensitive circuit. This hot swap controller has a minimum operating temperature of -40 °C and a maximum of 85 °C. This device has a minimum operating supply voltage of -12 V and a maximum of -100 V.