AO7408

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An AO7408 is a single enhancement-mode MOSFET (metal-oxide semiconductor field effect transistor) designed for use in a variety of power management and signal switching applications. This device can serve as a voltage-controlled single-pole, single-throw (SPST) switch, providing simple, low cost on/off control for signal and power circuits. Applications vary from digital logic switching and amplification to DC, AC and pulse power control.

The AO7408 has a maximum drain current of 85 mA and a maximum drain-source voltage of 30 V. This device has an output resistance, or RDS(ON), of 0.05 ohms at VGS=10V, meaning that it can be used in several high power switching applications such as low-voltage DC motor and illumination control.

Working principle of the AO7408 switch is simple: an external voltage is applied to the gate input, which generates an electric field in the semiconductor channel. Thus, the voltage at the drain terminal controls the channel current. This current-carrying channel has a much lower impedance than the gate-source junction. At sufficient gate-source voltage, the channel current increases and a drain-source voltage drop results.

The AO7408 is well suited for small-signal analog, RF and mixed-signal applications, and is used in such areas as switching power supply, LCD backlight and DC motor control. It can be used in high-fidelity audio equipment, liquid crystal display panels and industrial remote controls. Additionally, the AO7408 can be used in power amplifier circuits, and in instrumentation, where it can be used to provide switching of multiple inputs. The AO7408 features an excellent balance of RDS(ON), drain-source breakdown voltage and gate-source threshold voltage.

This device features a fast switching speed and low threshold voltage, allowing for higher power output at lower cost. It is also designed to provide improved thermal stability and reliability. In addition, it provides an improved on-state resistance and stability, offering greater versatility and accuracy.

The AO7408 is widely used in many high power applications such as low voltage DC motor and illumination control. This device can be used in a variety of applications requiring low voltage switching, including lighting control, audio applications, and industrial remote controls. This device is also used in power amplifier circuits and instrumentation. The AO7408 offers an improved thermal stability, reliability and on-state resistance, making it ideal for a variety of industrial and off-line applications.

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