Infineon BSS84PH6327XTSA2 P-Channel MOSFET: Datasheet, Pinout, and Application Circuit Guide

The Infineon BSS84PH6327XTSA2 is a popular P-Channel enhancement mode MOSFET designed using Infineon’s advanced proprietary planar stripe technology. This device is well-suited for a wide range of low-voltage, low-current switching applications, offering a compact form factor and high efficiency.

Datasheet Overview and Key Specifications

The BSS84PH6327XTSA2 is characterized by its low threshold voltage and low on-resistance, which make it highly efficient for power management tasks. Key absolute maximum ratings and electrical characteristics from its datasheet include:

- Drain-Source Voltage (VDS): -60 V

- Continuous Drain Current (ID): -130 mA

- On-Resistance (RDS(on)): Typically 6.5 Ω at VGS = -10 V, ID = -50 mA

- Gate Threshold Voltage (VGS(th)): Typically -1.5 V

- Power Dissipation (PD): 360 mW

These specifications highlight its suitability for load switching, power gating, and interface circuits in portable and battery-operated devices.

Pinout Configuration

The BSS84PH6327XTSA2 is available in the industry-standard SOT-23 (TO-236) surface-mount package. The pinout is as follows:

- Pin 1 (Gate): Controls the conductivity between the source and drain.

- Pin 2 (Source): Typically connected to the higher voltage potential.

- Pin 3 (Drain): The output terminal connected to the load.

Correct connection is critical, as reversing the source and drain will prevent the MOSFET from operating as intended.

Typical Application Circuit Guide

A common use for this P-MOSFET is as a high-side switch. The circuit below shows a basic configuration for controlling a load (e.g., an LED or a small motor) with a microcontroller (MCU).

Components Required:

- Microcontroller (e.g., Arduino, ESP32)

- Infineon BSS84PH6327XTSA2 MOSFET

- Load (e.g., LED with current-limiting resistor)

- Pull-up resistor (e.g., 10kΩ)

Circuit Operation:

1. The microcontroller's GPIO pin is connected to the MOSFET's Gate pin.

2. The Source pin is connected to the positive supply voltage (VDD, e.g., 5V or 3.3V).

3. The Drain pin is connected to one end of the load. The other end of the load is connected to ground.

4. A pull-up resistor is connected between the source and gate to ensure the MOSFET remains off when the MCU pin is in a high-impedance state (e.g., during startup).

How It Works:

- When the MCU output is LOW (0V), the voltage difference between the Gate and Source (V_GS) is sufficient (e.g., -5V or -3.3V) to turn the MOSFET ON. Current flows from the source through the drain to the load, powering it.

- When the MCU output is HIGH (e.g., 3.3V), V_GS is approximately 0V, which is greater than the threshold voltage (V_GS(th)), turning the MOSFET OFF. This stops the current flow and switches the load off.

This circuit is invaluable for allowing a low-voltage MCU to control a higher voltage load with minimal power loss.

ICGOOODFIND:

The Infineon BSS84PH6327XTSA2 is an excellent choice for designers seeking a reliable and efficient P-Channel switch for space-constrained, low-power applications. Its combination of a low threshold voltage, compact SOT-23 package, and robust performance makes it ideal for use in battery-powered devices, portable electronics, and as a solid-state replacement for mechanical switches.

Keywords:

P-Channel MOSFET

Load Switch

Datasheet

Application Circuit

SOT-23