LTC7820IUFD#PBF

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

The LTC7820IUFD#PBF is a synchronous buck DC/DC controller built to enable portable equipment designs that are smaller, lighter and more efficient than ever before. This high-switching frequency controller offers a maximum input voltage of 28V and can generate output voltages as low as 0.8V. Its high switching frequencies enable low-profile inductors and capacitors, which simplifies the design of the power stage and results in a much smaller bill of materials.

Features

• Up to 95% Efficiency
• Shutdown- and Power-Good Outputs
• Programmable Maximum Input Voltage (VINMAX)
• Voltage Tracking/Sequencing and Power-On Reset
• Input Undervoltage Lockout with Hysteresis
• 60V Maximum Fault Tolerant Gate Drivers

Application Field

The LTC7820IUFD#PBF synchronous buck controller is ideal for powering portable electronic devices such as cell phones, tablets, and medical instruments. Its high-switching frequency of up to 4.2MHz eliminates the need for large, expensive inductors while at the same time, its maximum input voltage of 28V enables small-footprint designs. The LTC7820IUFD#PBF employs an externally controlled current-mode control architecture to precisely regulate the output voltage.

Working Principle

The LTC7820IUFD#PBF is a synchronous buck DC/DC controller that employs an externally controlled current-mode control architecture. Its high-switching frequency of up to 4.2MHz enables the use of very small and low-cost inductors and capacitors, thus reducing the size, weight, and cost of the system. The LTC7820IUFD#PBF enables maximum flexibility by employing externally controlled current-mode control, and its maximum input voltage of 28V allows designers to build smaller, lighter, and more efficient systems. Its fast transient response, internal compensation, and voltage tracking/sequencing make it ideally suited for powering high-performance portable electronic devices.

The controller includes an internal oscillator, which can accommodate switching frequencies up to 4.2MHz. The device also includes a programmable maximum input voltage (VINMAX) of 28V, allowing the device to remain within the desired set of operating constraints. Timing, feedback, and loop compensation components are all internally configured and automatically adjust their settings based on the selected switching frequency, providing optimal performance.

The LTC7820IUFD#PBF also includes several features such as shutdown and power-good outputs, input undervoltage lockout (UVLO) with hysteresis, and fault-tolerant gate drivers. These features provide designers with greater design implementation flexibility, which is essential when designing for portable applications.

Conclusion

The LTC7820IUFD#PBF synchronous buck controller is a great choice for powering portable electronic devices. Its high switching frequency and VINMAX voltage enable the use of very small, lightweight components, resulting in smaller bill of materials and improved overall system efficiency. Furthermore, its flexible current-mode control architecture, internal components, and safety features provide designers with unprecedented levels of flexibility and reliability when designing for portable applications.

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