LTC3355IUF#PBF - A High-Performance Backup Power Controller from Linear Technology

The LTC3355IUF#PBF is a versatile backup power controller integrated circuit designed by Linear Technology, which is now part of Analog Devices. It's engineered to provide reliable backup power management in a wide array of applications, ensuring that systems continue to operate seamlessly during main power interruptions. This component is particularly suitable for mission-critical devices where power continuity is essential.

Main Features

• Wide Input Voltage Range: The LTC3355 operates over a wide input voltage range from 4.5V to 36V, making it suitable for a variety of power supply configurations.
• Integrated Supercapacitor Charger: It features an onboard supercapacitor charger with adjustable float voltage, allowing for precise control of the backup energy storage.
• PowerPath Control: The LTC3355 provides seamless PowerPath control to manage the transition between the primary power source and the backup power provided by the supercapacitors.
• Bidirectional Operation: Its bidirectional operation enables the device to charge the supercapacitor when the input power is available and discharge it to provide backup power when needed.
• Programmable Input Current Limit: The input current limit can be programmed to accommodate different power sources and system requirements.
• High-Efficiency Buck-Boost Regulator: An integrated high-efficiency buck-boost DC/DC regulator maintains the output voltage during the transition between input power and backup mode.

Robust and Reliable

The LTC3355IUF#PBF is designed to operate in harsh environments with an industrial temperature range from -40°C to 125°C. Its robustness is further enhanced by features such as overvoltage, undervoltage, and thermal protection, ensuring reliable performance under a variety of conditions.

Compact and Easy to Use

Encased in a compact 24-lead QFN package, the LTC3355IUF#PBF minimizes the footprint on the PCB and simplifies the design process. Its user-friendly interface allows for easy configuration and integration into existing and new designs, making it an ideal choice for designers looking for a backup power solution that combines performance with convenience.

Whether it's for industrial control systems, automotive electronics, portable devices, or any application where uninterrupted power is crucial, the LTC3355IUF#PBF from Linear Technology provides a sophisticated, reliable, and easy-to-implement solution.