LTC1628IUH#PBF - Dual Phase Synchronous Step-Down Switching Regulator

The LTC1628IUH#PBF is a high-performance, dual phase synchronous step-down switching regulator designed by Linear Technology, a leader in analog integrated circuits. This regulator is part of a family of monolithic regulators that utilize a constant frequency, current mode architecture, which is ideal for power supply applications requiring a low voltage, high current output with excellent load and line regulation.

Encased in a compact 5mm x 7mm QFN package, the LTC1628IUH#PBF offers a wide input voltage range from 4.5V to 36V, making it versatile for a variety of applications from simple single battery-powered devices to high voltage systems. The dual phase operation significantly reduces the required input and output capacitance and also eases the thermal design by spreading the heat dissipation over a larger area.

The device features a powerful 1.5 Ohm onboard N-channel MOSFETs that enable the LTC1628IUH#PBF to deliver continuous output currents up to 20A per phase with excellent efficiency. With its ability to run with a selectable fixed frequency between 150kHz and 300kHz or to be synchronized to an external clock, the LTC1628IUH#PBF provides design flexibility and can be optimized for a variety of inductor sizes and efficiency requirements.

Additional features of the LTC1628IUH#PBF include selectable Burst Mode® operation for high efficiency at low output currents, a phase-lockable frequency (75kHz to 850kHz), overvoltage protection, and power good output voltage monitoring. The device also includes a tracking input for smooth supply sequencing. Its internal cycle-by-cycle current limit provides protection against shorted outputs, and the enhanced short-circuit protection reduces power dissipation during overcurrent conditions.

The LTC1628IUH#PBF is an excellent choice for designers looking for a robust power solution for high-performance applications such as telecommunications, networking equipment, and dense data processing systems. With its advanced features and comprehensive protection circuitry, the LTC1628IUH#PBF offers a reliable and efficient power management solution that meets the rigorous demands of modern electronic devices.