Linear Technology LTC3451EUF Overview

The LTC3451EUF is a versatile and efficient DC/DC converter from Linear Technology, designed for applications requiring dual power outputs from a single lithium-ion/polymer battery or other power sources. This high-performance, adjustable power converter stands out for its small footprint and robust capability to provide a regulated output voltage that is both selectable and fixed, catering to a wide range of portable electronics and industrial devices.

Key Features

• Wide Input Voltage Range: The LTC3451EUF operates with an input voltage range of 2.7V to 5.5V, making it suitable for single-cell lithium-ion/polymer battery-powered applications, as well as other low voltage sources.
• Dual Output Channels: It features two output channels with independent control. The main channel delivers a fixed 5V output, while the auxiliary channel offers an adjustable output voltage from 2.5V to 4.5V, providing flexibility for powering multiple devices.
• High Efficiency: The converter achieves high efficiency, up to 94%, which is critical for battery-operated devices where power conservation is paramount.
• Compact Package: Housed in a 16-lead QFN (4mm x 4mm) package, the LTC3451EUF is designed for space-constrained applications.
• Integrated Soft-Start: To minimize inrush current and output voltage overshoot, the device features an integrated soft-start function.
• Thermal Protection: It includes thermal shutdown protection to safeguard the device against overheating, ensuring reliable operation under various conditions.

Applications

The LTC3451EUF is ideal for a range of applications, including but not limited to:

• Portable Medical Devices
• Handheld Instruments
• GPS Devices
• Wireless Transmitters and Networking Devices
• USB On-The-Go (OTG) Power Supplies

With its combination of dual outputs, high efficiency, and a compact form factor, the LTC3451EUF from Linear Technology is an excellent choice for designers looking to optimize power management in their next-generation portable devices.