The LT1945EMS#TR from Linear Technology is a versatile dual switching regulator that's designed to address a wide range of power supply requirements for portable and compact electronics. This integrated circuit is particularly well-suited for applications where efficiency, reliability, and a small footprint are critical.

Key Features:

• Wide Input Voltage Range: The device operates from an input voltage range of 2.6V to 16V, making it suitable for single-cell Li-Ion, multi-cell alkaline, or NiMH applications, as well as fixed 3.3V, 5V, and 12V systems.
• Dual Independent Outputs: It features two independent output channels with switch currents of 1.4A for Channel 1 and 1.8A for Channel 2, allowing it to provide power for both positive and negative outputs in a system.
• Adjustable Switching Frequency: The switching frequency can be set from 300kHz to 2.2MHz with an external resistor or can be synchronized to an external clock, which provides design flexibility and helps to optimize efficiency and component size.
• High Efficiency: With efficiencies up to 85%, this regulator helps to extend battery life in portable devices.
• Thermal Protection: The LT1945EMS#TR includes thermal shutdown protection to safeguard the device under over-temperature conditions.
• Low Shutdown Current: The shutdown feature reduces the supply current to less than 15µA, which is ideal for battery-powered applications.

Applications:

The LT1945EMS#TR is ideal for a variety of applications, including but not limited to:

• Portable and battery-powered equipment
• Medical devices
• Wireless modems and networking equipment
• Digital cameras and other imaging devices
• GPS receivers

Package and Reliability:

The device is available in a compact 10-lead MSOP package, which is RoHS compliant. Its small size and surface-mount package make it suitable for space-constrained applications. The LT1945EMS#TR is also characterized for operation from -40°C to 85°C, ensuring reliable performance across a wide range of environmental conditions.