Product Overview: LTC3440EDD#TR

The LTC3440EDD#TR is a high-efficiency, fixed frequency, synchronous buck-boost DC/DC converter manufactured by Linear Technology, now part of Analog Devices. This versatile component is designed to operate from a wide input voltage range and is ideal for applications requiring a regulated output voltage with an input supply that may vary above and below the output voltage.

Key Features

• Wide Input Voltage Range: The device can operate from an input voltage range of 2.5V to 5.5V, making it suitable for single-cell Li-Ion, multi-cell alkaline, or NiMH applications, as well as for fixed 3.3V or 5V systems.
• Adjustable Output Voltage: The LTC3440EDD#TR provides an adjustable output voltage from 1.5V to 5.25V, which can be set via external resistors.
• High Efficiency: Integrating synchronous rectification, the converter achieves high efficiency over a broad range of load currents.
• Constant Frequency Operation: Operating at a fixed frequency of 1.2MHz, the device allows for small external components and minimizes noise interference in sensitive applications.
• Low Quiescent Current: The LTC3440EDD#TR features a low no-load quiescent current, conserving battery life in portable applications.
• Compact Package: Housed in a compact 10-lead DFN package, it is ideal for space-constrained applications.

Applications

The LTC3440EDD#TR is versatile and can be used in various applications such as:

• Handheld Devices
• Portable Instruments
• Medical Devices
• Wireless Transceivers
• GPS Receivers

Additional Specifications

• Thermal Performance: The device features thermal shutdown and current limit protection for improved reliability under extreme conditions.
• Seamless Transitions: Between buck and boost modes, the LTC3440EDD#TR provides smooth transitions, ensuring consistent power supply to the load.

The LTC3440EDD#TR is a reliable and efficient solution for managing power in a wide range of electronic devices, offering designers flexibility and performance in a small footprint. With its advanced features, it ensures a stable and efficient power supply, making it a go-to choice for modern, power-sensitive applications.