The LTC3406ES5-1.8 is a high-efficiency, monolithic synchronous buck regulator from Linear Technology designed to deliver a fixed output voltage of 1.8V. This compact and versatile power solution is specifically engineered for portable applications where space and power efficiency are of paramount importance. The device is capable of delivering up to 600mA of continuous output current at voltages as low as 1.8V from a 2.5V to 5.5V input range, making it an ideal choice for single-cell Li-Ion or multi-cell alkaline/NiMH applications.

Key Features

• High Efficiency: Up to 96%, ensuring prolonged battery life for portable devices.
• Low Quiescent Current: Only 20uA in operation and less than 1uA in shutdown, minimizing power drain when idle.
• High Frequency Operation: 1.5MHz switching frequency allows the use of small, low-cost capacitors and inductors.
• No Schottky Diode Required: Internal synchronous rectification increases efficiency and reduces external component count.
• Thermal Protection: Over-temperature protection ensures the device operates within safe temperature ranges.

Applications

• Portable Instruments
• Battery-Powered Equipment
• Handheld Devices
• Embedded Systems
• Wireless Modems

Product Advantages

The LTC3406ES5-1.8's small footprint and minimal external component requirements make it an excellent choice for space-constrained applications. Its high efficiency and low dropout operation extend battery life, crucial for portable electronics. The device's fixed output voltage simplifies design considerations, and its high-frequency operation enables a compact overall solution with small external components.

Package and Availability

The LTC3406ES5-1.8 is available in a small, thermally efficient ThinSOT-23 package, which is ideal for portable applications where space is at a premium. Contact Linear Technology or authorized distributors for pricing, availability, and additional technical specifications.