There are many kinds of MOS transistors, among which N-channel MOS transistor is a common one. NMOS is to make two N+ regions with high doping concentration on a P-type silicon substrate with low doping concentration, and lead out two electrodes with metal aluminum as drain D and source S respectively. Then, a thin silicon dioxide (SiO2 _ 2) insulating layer is covered on the surface of the semiconductor, and an aluminum electrode is installed on the insulating layer between the drain and the source as the gate G.. An electrode B is also led out on the substrate, which constitutes an N-channel enhanced MOS tube. MOS transistor usually has good switching characteristics and is widely used in switching power supply, motor drive, LED lighting and other applications. In this issue, Hottech will explain the characteristics and application of an N-channel MOS transistor AO3416.

Characteristics of AO3416

AO3416 is an N-channel enhanced field effect transistor, which is composed of source, drain and gate, and has the characteristics of low on-resistance and static power consumption and high switching speed. AO3416 produced by Hottech has excellent product characteristics, its drain-source voltage is 20V, its gate-source voltage is 8V, its continuous drain current is 6.5A, its drain-source on-resistance is 0.022Ω, its minimum gate threshold voltage is 0.4V, its maximum gate threshold voltage is 1.1V, its dissipation power is 1400 mW, and its weight is about 0.008 g..

AO3416 adopts SOT-23 package, which is one of the most common package types in SMD MOS tubes. It is a small package with the characteristics of small size, light weight and high temperature resistance. Because of its small size, it is suitable for circuit applications with limited space.

AO3416 can work at low voltage, and is especially suitable for module circuit design in low voltage and medium current applications, including power management, lighting modules and various portable devices.

Gate charge test circuit and waveform

R resistive switch test circuit and waveform

Diode recovery test circuit and waveform

Application of AO3416

It is precisely because AO3416 products have the above product characteristics that AO3416 can be used in power supply, BMS, wireless communication system, automotive electronics, LED lighting and other fields. Customers can choose suitable discrete devices according to their specific application scenarios and circuit characteristics, taking into account the characteristics and matching degree of MOS, and meet the actual needs.

The picture above shows the practical application case of AO3416 NMOS tube in one-button on-off circuit. This tube plays the role of switch control circuit in the circuit. The characteristics of high switching speed and low on-resistance of the tube are successfully utilized. It is a very typical case of small signal MOS transistor control circuit.

The AO3416 produced by Hottech has the characteristics of stability and high efficiency. If you are interested in Hottech's AO3416, you can apply to the company for sample testing and proofing, and look forward to cooperating with you.