LTC3405AES6-1.375#TRPBF - High Efficiency, Small Footprint DC/DC Converter

The LTC3405AES6-1.375#TRPBF is a high-performance, step-down DC/DC converter designed by Linear Technology, now part of Analog Devices, to meet the power management needs of modern portable devices. This efficient converter is capable of delivering up to 300mA of continuous output current from a 2.5V to 5.5V input range, making it ideal for single-cell Li-Ion/Polymer, or multi-cell alkaline/NiMH applications.

With its fixed output voltage of 1.375V, the LTC3405AES6-1.375#TRPBF ensures a stable supply for low-voltage logic and ICs. The device utilizes a high frequency switching architecture at 1.5MHz, allowing the use of tiny, low-cost capacitors and inductors, which minimizes the overall footprint and design complexity on the circuit board. This feature is particularly valuable in space-constrained applications such as handheld devices.

Efficiency is a key aspect of the LTC3405AES6-1.375#TRPBF, with its low R<sub>DS(ON) internal switches contributing to efficiencies as high as 96%. Moreover, the 'Burst Mode' operation significantly reduces quiescent current during light loads, thus prolonging battery life in portable systems. For noise-sensitive applications, the device can be synchronized to an external clock, eliminating potential interference.

The LTC3405AES6-1.375#TRPBF is designed with protection features to ensure the reliability and longevity of the end application. These include thermal shutdown, current limiting, and the ability to withstand overvoltage conditions. The device is offered in a compact, low-profile (1mm) ThinSOT package, which is highly suited for handheld and portable applications where space is at a premium.

Key features of the LTC3405AES6-1.375#TRPBF include:

• Fixed Output Voltage: 1.375V
• Up to 300mA Output Current
• High Efficiency: Up to 96%
• High Switching Frequency: 1.5MHz
• Burst Mode Operation for Low Quiescent Current
• Stable with Ceramic Capacitors
• Low Profile (1mm) ThinSOT Package
• Overtemperature and Overcurrent Protection

Whether for power supply designs in the latest smartphones, Bluetooth headsets, or portable medical devices, the LTC3405AES6-1.375#TRPBF provides a compact, efficient, and reliable solution that engineers can trust for their power conversion needs.