TMC5031-LA

Recommendation from external power supply to VCC, When the chip is cooled, it is very critical, For example, at high ambient temperature at a high supply voltage (16 V) combination, As a linear regulator, it is a major source of power consumption for a chip. We must be sure that the external VCC supply comes before or synchronously with 5VOUT, because otherwise the electrical reset event can be missed by the TMC5031. This is ensured by a diode from 5VOUT to VCC, and the external voltage regulator in the housing is not a low-loss linear regulator. To prevent the internal 5V overload regulator from using this diode, an additional series resistor has been added to the VSA