FDN371N Discrete Semiconductor Products

Vgs(th) (Max) @ Id:	1.5V @ 250µA
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SuperSOT-3
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Power Dissipation (Max):	500mW (Ta)
FET Feature:	--
Input Capacitance (Ciss) (Max) @ Vds:	815pF @ 10V
Vgs (Max):	±12V
Gate Charge (Qg) (Max) @ Vgs:	10.7nC @ 4.5V
Series:	PowerTrench®
Rds On (Max) @ Id, Vgs:	50 mOhm @ 2.5A, 4.5V
Drive Voltage (Max Rds On, Min Rds On):	2.5V, 4.5V
Current - Continuous Drain (Id) @ 25°C:	2.5A (Ta)
Drain to Source Voltage (Vdss):	20V
Technology:	MOSFET (Metal Oxide)
FET Type:	N-Channel
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The FDN371N is a single N-Channel enhancement-mode MOSFET with low on-resistance and superior operating characteristics. This device is designed for use in applications such as general purpose power switching, switching power supplies, DC-DC converters, LED lighting and class D amplifier applications.This article will discuss the FDN371N application field and the working principle of the device. It will also outline the benefits of using this device in circuits and the main characteristics that make it stand out from other available MOSFETs.

FDN371N Application Field

The FDN371N is designed for a variety of general purpose power switching applications including the following:• DC-DC converters.• Class D amplifier circuits.• Switching power supplies.• Home appliances.• Battery operated electronic devices.• Laser diode controllers.In addition to its use in these types of applications, the FDN371N can also be used in other high performance applications such as high current switching and high temperature environments.

Working Principle of FDN371N

The FDN371N consists of an N-Channel MOSFET with low on-resistance and superior operating characteristics. The working principle of the device is similar to the functioning of other MOSFETs – i.e. when an electric field is applied to the gate, the N-Channel MOSFET exhibits an ON-resistance that is a fraction of the OFF-resistance.Unlike other available MOSFETs, the FDN371N also has a low gate threshold voltage—meaning that a relatively low voltage is required in order to switch the device to the ON-state. This makes the FDN371N particularly suitable for use in applications where low power consumption is desired and/or high switching speeds are required.The FDN371N has an ESD Protection rating of 8kV (Human Body Model). This makes it ideal for use in applications where electrostatic discharge protection is necessary such as consumer electronics, automotive and LED lighting applications.

Benefits of Using the FDN371N

The FDN371N is a highly performant and versatile MOSFET that is suitable for a variety of different applications. The following are some of the main benefits of using the FDN371N over other available MOSFETs:• Low on-resistance.• Low gate threshold voltage.• High switching efficiency.• Ability to operate in high temperature environments.• ESD Protection rating of 8kV (Human Body Model).• Low power consumption.These features make the FDN371N particularly well-suited for use in applications such as DC-DC converters, Class D amplifier circuits, switched power supplies, high current switching, laser diode controllers and high temperature applications.

Conclusion

The FDN371N is a single N-Channel enhancement-mode MOSFET with low on-resistance and excellent operating characteristics. This device is designed for use in a variety of general purpose power switching applications including DC-DC converters, Class D amplifier circuits, switching power supplies, and high temperature environments. It is also well-suited for use in applications such as consumer electronics, automotive and LED lighting applications due to its ESD protection rating of 8kV (Human Body Model).The FDN371N has a low gate threshold voltage as well as offers low power consumption and high switching efficiency—making it suitable for a range of small signal and power switching applications. This MOSFET also has the ability to operate in high temperature environments, ensuring reliable and stable performance even in extreme environmental conditions.

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