FDS9431A is a Fairchild P-channel MOSFET with -3.5A, -20V maximum voltage and current, low RDS(ON) and high power handling capability.
The document describes the Fairchild FDS9431A, a P-Channel 2.5V specified MOSFET produced using proprietary DMOS technology designed to minimize on-state resistance while maintaining superior switching performance. Key applications include DC/DC converters, power management circuits, load switches, and battery protection systems.
The datasheet details absolute maximum ratings such as a drain-source voltage of -20 V and continuous drain current of -3.5 A. It also lists electrical characteristics including on-resistance values at various gate-source voltages, switching times, capacitance parameters, and thermal resistance figures for junction-to-ambient and junction-to-case configurations.
| Drain-Source Voltage (Vdss) | -20 V |
|---|---|
| Gate-Source Voltage (Vgss) | +8 V |
| Continuous Drain Current (Id) | -3.5 A |
| Operating Junction Temperature Range | -55 to +150 °C |
The device is suitable for DC/DC converters, power management, load switches, and battery protection.
The maximum continuous drain current is -3.5 A at 25°C.