We are using the OTP PMIC O917A171TRGZRQ1 in HKMC ECU project. When we tested the ECU from room temperature to -40°C, we found the LDO2 output voltage 3.3V of PMIC was out of range. It will be 5V at about -30°C. This can cause ECU to failure. Please check the device mark code as below.
For the schematic and test waveform, please check the attached files in detail.