LT3463AEDD#PBF

PMIC - Voltage Regulators - DC DC Switching Regulators

The LT3463AEDD#PBF is a high efficiency, high-performance, synchronous step-down DC-DC switching regulator. It is an ideal solution for applications that require fast transient response and low output noise, such as cellular phones, portable medical equipment, and portable navigation systems. It is also suitable for powering FPGAs and microcontrollers, as well as powering digital video cameras and camcorders.

Features

The LT3463AEDD#PBF offers several advanced features which make it ideal for a variety of applications. It features synchronous rectification for high efficiency and a wide operating frequency range for low noise operation. It also has a current-mode control topology for fast transient response and excellent line and load regulation. It offers a high current capability with an adjustable maximum current limit and an adjustable soft-start. It also features cycle-by-cycle current limit with programmable switching frequency and undervoltage lockout with hysteresis.

Application Field

The LT3463AEDD#PBF is ideal for a variety of applications, ranging from cellular phones and portable medical equipment to powering FPGAs and microcontrollers, digital video cameras, and camcorders. It is also well suited for automotive infotainment systems, solid state lighting, and power-over-Ethernet (PoE) applications. It is also compatible with a variety of power supplies, including low-dropout linear regulators (LDOs), battery packs, and AC adapters, allowing for maximum design flexibility.

Working Principle

The LT3463AEDD#PBF is based on a synchronous buck topology. The input voltage is regulated by a high-side N-channel MOSFET and a low-side synchronous rectifying N-channel MOSFET. An external compensation and soft-start capacitor are used to regulate the output voltage and provide a controlled start-up and adjustable maximum output current. The internal voltage loop operates in current-mode, providing fast transient response and excellent line and load regulation. The output voltage is set with an external resistor divider, and the output current is limited by an external sense resistor.

Conclusion

In conclusion, the LT3463AEDD#PBF is a high efficiency, high-performance, synchronous step-down DC-DC switching regulator. It is ideal for a wide range of applications, including portable medical equipment, FPGAs and microcontrollers, automotive infotainment systems, and digital video cameras and camcorders. It features synchronous rectification for high efficiency and a wide operating frequency range for low noise operation. It also has a current-mode control topology for fast transient response and excellent line and load regulation.