Texas Instruments

UC3847DW  

DC DC Switching Controllers

UC3847DW Description

The UC3847DW is a highly versatile and advanced transistor driver designed by Texas Instruments, specifically tailored for applications requiring precise control and high efficiency in DC-DC switching controllers. This device is part of the DC-DC Switching Controllers category and is known for its robust performance and extensive feature set. The UC3847DW is housed in a surface-mount package, making it suitable for compact and space-constrained designs. It operates within a wide supply voltage range of 6.95V to 40V, ensuring compatibility with a variety of power supply systems.

UC3847DW Features

The UC3847DW offers a comprehensive suite of control features, including current limit, enable, frequency control, and soft start, which enhance its flexibility and adaptability to different operating conditions. With a switching frequency of up to 500kHz, it ensures high efficiency and fast response times, making it ideal for high-speed applications. The device supports a maximum duty cycle of 50%, which helps in maintaining optimal power delivery and minimizing power loss.

One of the standout features of the UC3847DW is its synchronous rectifier capability, which significantly improves power conversion efficiency by reducing power dissipation. Additionally, the device supports clock synchronization, ensuring precise timing and coordination in multi-phase or multi-channel applications. The UC3847DW is also equipped with two outputs, providing dual-channel control for enhanced performance and reliability.

The UC3847DW is designed with environmental compliance in mind, being both REACH unaffected and ROHS3 compliant. It has a moisture sensitivity level (MSL) of 2, which ensures a 1-year shelf life, making it suitable for long-term storage and use in various environments. The operating temperature range of 0°C to 70°C (TA) makes it suitable for a wide range of industrial and consumer applications.

UC3847DW Applications

The UC3847DW is ideal for a variety of applications where high efficiency, precise control, and robust performance are critical. Its wide operating voltage range and high switching frequency make it suitable for power supplies, motor controls, and other applications requiring efficient power conversion. The synchronous rectifier feature is particularly beneficial in applications where power efficiency is paramount, such as in renewable energy systems and high-performance computing.

The dual outputs and clock synchronization capabilities make the UC3847DW an excellent choice for multi-phase power supplies and complex power management systems. Its compact surface-mount package allows for integration into space-constrained designs, such as portable electronics and embedded systems. The UC3847DW's comprehensive control features and high efficiency also make it suitable for applications in the automotive industry, where reliability and performance are crucial.

Conclusion of UC3847DW

In summary, the UC3847DW by Texas Instruments a is highly capable transistor driver that offers a wide range of features and benefits for DC-DC switching controllers. Its high switching frequency, synchronous rectifier capability, and extensive control features make it a top choice for applications requiring high efficiency and precise control. The UC3847DW's compliance with environmental standards and its robust performance characteristics ensure its suitability for a variety of industrial and consumer applications. Whether used in power supplies, motor controls, or complex power management systems, the UC3847DW stands out as a reliable and efficient solution.

UC3847DW Documents

Download datasheets and manufacturer documentation for UC3847DW

EOL :

Product Discontinuance Notification (PDF)      

Images :

Mechanical Outline Drawing       Function Diagram      

Models :

UC3847DW Symbol & Footprint by SnapMagic      

Application Notes :

U-93 A New Integrated Circuit for Current Mode Control      

SPICE Models :

UCx847 Unencrypted PSpice Transient Model       UCx847 Family Unencrypted PSpice Transient Model Package (Rev. A)