LTC3411 - High Efficiency, 2.25MHz Synchronous Step-Down Regulator

The LTC3411 from Linear Technology is a high-performance, synchronous step-down regulator that integrates top and bottom MOSFETs to provide efficient power conversion with minimal external components. Designed for a wide range of applications, the LTC3411 is capable of delivering up to 1.25A of continuous output current with a very compact footprint.

Key Features:

• High Efficiency: Up to 95% efficiency reduces heat generation and improves battery life in portable applications.
• Wide Input Voltage Range: Operates from an input voltage range of 2.25V to 5.5V, making it suitable for single-cell Li-Ion, multi-cell alkaline, or NiMH applications, as well as standard 3.3V and 5V power rails.
• High Switching Frequency: A 2.25MHz switching frequency enables the use of tiny, low-cost capacitors and inductors, reducing the overall solution size.
• No Schottky Diode Required: The internal synchronous rectification increases efficiency and eliminates the need for an external Schottky diode.
• Adjustable Output Voltage: The output voltage is adjustable from 0.8V to VIN, accommodating a broad range of power needs.
• Stable with Ceramic Capacitors: Stable operation with ceramic output capacitors ensures reliability and a smaller solution size.
• Low Dropout Operation: 100% duty cycle capability provides low dropout operation, extending battery life in portable systems.
• Protection Features: Includes overtemperature protection and current limiting for safe operation under abnormal conditions.

Applications:

The LTC3411 is ideal for portable and battery-powered electronics, including handheld instruments, GPS devices, and wireless modems. It is also well-suited for distributed power systems and point-of-load conversions in networking and telecommunications equipment.

Package Availability:

The device is available in a compact 10-lead DFN (3mm x 3mm) package, providing a space-saving solution for densely packed circuit boards.

For detailed specifications, application circuits, and additional information, please refer to the official LTC3411 datasheet from Linear Technology.