LTC3411EDD/IDD High Efficiency, 2.25MHz Synchronous Step-Down Regulator

The LTC3411EDD/IDD from Linear Technology is a high-performance, synchronous step-down regulator that combines compact packaging with high efficiency to deliver a versatile power management solution. Designed for portable and space-constrained applications, the LTC3411EDD/IDD operates over a wide input voltage range from 2.25V to 5.5V, making it suitable for single-cell Li-Ion, multi-cell alkaline, or NiMH applications, as well as 3.3V or 5V intermediate bus systems.

This regulator offers a high switching frequency of 2.25MHz, which allows the use of small, low-cost capacitors and inductors less than 2mm in height. Its high frequency operation also enables a fast transient response, a critical feature for powering modern digital loads.

The LTC3411EDD/IDD integrates main and synchronous power MOSFET switches, which enhances efficiency by reducing the need for external Schottky diodes. It provides up to 1.25A of continuous output current with efficiencies as high as 95%. The device also features a Burst Mode® operation, which significantly improves efficiency at light loads, making it ideal for battery-powered applications where extending run time is crucial.

Protection features include over-temperature protection, over-current protection, and a low-battery indicator. The LTC3411EDD/IDD also has an adjustable soft-start function to control the inrush current during startup, which further enhances the safety and reliability of the system it powers.

Available in a small 10-pin (3mm x 3mm) DFN package, the LTC3411EDD/IDD provides a compact solution for space-constrained applications while maintaining performance. Its thermal performance is optimized for high efficiency and reliability, ensuring stable operation across a wide range of environmental conditions.

With its combination of features, the LTC3411EDD/IDD is an excellent choice for designers looking for a high-efficiency, synchronous step-down regulator that can deliver performance and versatility in a compact footprint.