ZHCSO90A november 2022 – april 2023 TPS36-Q1
PRODUCTION DATA
The negative-going threshold voltage, VIT-, is set by the device variant. Equation 4 shows how to calculate the "Threshold Voltage" section of the orderable part number.
In this example, the nominal supply voltage for the microcontroller is 1.8 V. The minimum supply voltage is 10% lower than the nominal supply voltage, or 1.62 V. Setting a 1.65 V threshold ensures that the device is reset just before the supply voltage reaches the minimum allowed. Thus a 1.65 V threshold is chosen and, using Equation 4, the part number is reduced to TPS36xx13xxxxxxxQ1. The hysteresis is 5% typical, resulting in a positive-going threshold voltage, VIT+, of 1.73 V.