VE-JWR-EZ-F4

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DC DC Converters

A DC-DC converter, also known as a DC regulator, is an electronic circuit used for converting a DC power supply from one voltage level to another. It is used extensively in applications such as cell phones, DVD players, medical instruments, industrial controllers and consumer electronics. In addition, they are also used for the power supply of light emitting diode (LED) products, and are available in many sizes and configurations.

VE-JWR-EZ-F4 Application Field and Working Principle

The VE-JWR-EZ-F4 DC-DC converter is a high efficiency DC to DC converter that provides a full range of voltage regulation and load protection functions. It is designed for applications such as cellular phones, LED lighting, communication systems and home appliances. This converter is capable of providing a regulated output voltage over an input voltage range of 3.5V to 5V. The maximum output current of this converter is 1.5A.

The working principle of the VE-JWR-EZ-F4 converter is based on the standard pulse width modulation (PWM) DC-DC converter topology, where an internal high frequency switching current is used to control the output voltage of the converter. The PWM switching frequency is adjustable and is typically in the range of 400kHz to 600 kHz, providing an efficient and reliable means of voltage regulation. The converter also includes a variety of protection features to ensure stable operation even in the most demanding applications.

The output voltage of the VE-JWR-EZ-F4 can be adjusted using the external FB pin, which is driven by a voltage divider or other control elements. The input voltage of the device is regulated by a built-in PWM modulator and a current limiter circuit. Furthermore, the converter includes built-in overvoltage protection, undervoltage protection and overcurrent protection.

The VE-JWR-EZ-F4 also features an additional low-dropout regulator (LDO) to further improve the quality of the output voltage. This LDO output is adjustable from 1.0V to 2.8V and the current is limited to 100mA, providing protection in case of over temperature, over voltage and over current conditions. Finally, the VE-JWR-EZ-F4 is equipped with a reverse polarity protection circuit that prevents the output from being damaged in the event of a reversed polarity input.

The VE-JWR-EZ-F4 DC-DC converter is a high efficiency and cost effective power solution for modern electronic applications. It provides a wide input voltage range, adjustable output voltage and a wide variety of protection features, making it an ideal choice for many applications.

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