LTC3547EDDB#TRMPBF Dual Channel, 800mA Synchronous Step-Down Regulator

The LTC3547EDDB#TRMPBF is a high-performance, dual-channel, synchronous buck regulator from Linear Technology, designed to provide efficient power management for portable and space-constrained applications. This compact and versatile power solution integrates two independent step-down regulators into a single package, offering a streamlined approach to voltage regulation in multi-rail systems.

Key Features

• High Efficiency: With up to 95% efficiency, the LTC3547EDDB#TRMPBF minimizes power loss, thereby extending battery life in portable devices.
• Dual Independent Outputs: Each channel can deliver up to 800mA of continuous output current, providing flexibility for powering different components within a system.
• Wide Input Voltage Range: The device operates from an input voltage range of 2.5V to 5.5V, making it suitable for single-cell Li-Ion/Polymer or multi-cell alkaline/NiMH applications.
• Adjustable Output Voltages: The output voltage for each channel can be independently set from 0.6V to the input voltage, allowing for customized voltage levels as per the requirements of the load.
• High Switching Frequency: A 2.25MHz constant frequency operation reduces the size of external components, contributing to a compact overall footprint.
• No Schottky Diode Required: The internal synchronous rectification enhances efficiency and eliminates the need for an external Schottky diode.
• Low Dropout Operation: The LTC3547's low dropout performance ensures continued regulation even when the input voltage is close to the output voltage.

Applications

The LTC3547EDDB#TRMPBF is an ideal choice for a wide range of applications, including:

• Portable Instruments
• Medical Devices
• Wireless Modems
• PDAs and Smartphones
• Digital Cameras
• GPS Receivers

Package and Reliability

This regulator is housed in a low-profile (0.75mm) 10-lead DFN (3mm × 3mm) package, which is RoHS compliant and designed for surface-mount technology (SMT) assembly processes. The LTC3547EDDB#TRMPBF ensures reliable operation over a temperature range of -40°C to 85°C, making it a robust choice for demanding environments.

Overall, the LTC3547EDDB#TRMPBF from Linear Technology provides a highly efficient, dual-channel power management solution that is both space-saving and feature-rich, making it an excellent choice for designers looking to optimize their power systems in portable and space-constrained applications.