SNVSBY7 March 2021 TPS92390
The TPS92390 is designed to operate from a car battery. The VIN input must be protected from reverse voltage and voltage dump condition over 48 V. The impedance of the input supply rail must be low enough that the input current transient does not cause drop below VIN UVLO level. If the input supply is connected with long wires, additional bulk capacitance may be required in addition to normal input capacitor.
The voltage range for VDD is 3 V to 5.5 V. A ceramic capacitor must be placed as close as possible to the VDD pin. The boost gate driver is powered from the CPUMP pins. A ceramic capacitor must be placed as close to the CPUMP pins as possible.