UC3874DW-1

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

UC3874DW-1 is widely employed in various kinds of PMIC - Voltage Regulators - DC / DC Switching Controllers applications. UC3874DW-1\'s cost and power efficiency benefit from its advanced topology and features. In this article, we will discuss the working principle and application field of UC3874DW-1.

Working Principle

UC3874DW-1 is an advanced current-mode PWM switching controller with high-accurate current limit protection and reliable over current protection. A single cycle of operation is driven by the internal oscillator with a frequency of up to 2MHz controlled by an external resistor (RT). Its internal driver with 650V/us switching speed makes it well suited for high-frequency applications. This switching controller can provide a low-ripple output voltage by controlling the PWM duty cycle by means of its voltage sense input (HVV). The sense voltage can be varied from 0V to the peak voltage of the power supply for fine tuning of the output voltage. It also provides fast switching with its 0.5A/us typical switch current. The UC3874DW-1 also provides a wide operating temperature range, making it well suited for automotive applications.

Application Field

UC3874DW-1 is applied to many different application fields. It is widely used in computing power supply applications due to its high efficiency and stable output. It is also used in DC/DC converters, LED lighting, automotive power supply, audio power amplifiers, etc. It is especially useful in LED lighting applications where its fast response time and accurate current limit protection are very critical to protect costly LEDs from excessive current. Additionally, its low dropout operation and wide operating temperature range make it suitable for automotive applications.

UC3874DW-1 is an excellent choice for PMIC - Voltage Regulators - DC / DC Switching Controllers applications. With its high precision, fast switching, and low cost, it can provide stable, reliable, and cost-effective solutions for various kinds of projects.

The specific data is subject to PDF, and the above content is for reference