Product Overview: LTC3128EFE#PBF

The LTC3128EFE#PBF is a high-efficiency, 3A buck-boost supercapacitor charger and balancer from Linear Technology, designed to provide a continuous transition between buck and boost modes, making it ideal for applications where the input voltage can vary both above and below the output voltage. It is specifically engineered for efficiently charging and protecting large capacitors in backup power and energy harvesting applications.

Key Features

• Wide Input Voltage Range: Operates from 2.42V to 15V, suitable for a variety of power sources.
• Adjustable Output Voltage: Can be programmed from 0.5V to 5.25V, allowing for flexible usage in different circuit designs.
• High Charging Current: Capable of delivering up to 3A of charge current to quickly charge supercapacitors.
• Programmable Charge Current: Users can set the charge current limit via a single resistor, offering customizable charging profiles.
• Integrated Balancer: Features an internal balancer for supercapacitors, ensuring long-term reliability and performance.
• Low Quiescent Current: Provides high efficiency with a low quiescent current, optimizing power usage for battery-powered applications.
• Thermal Protection: Includes over-temperature protection to safeguard the device under extreme operating conditions.
• Robust Packaging: Available in a thermally enhanced, 20-lead TSSOP package, ensuring durability and ease of integration into various designs.

Applications

The LTC3128EFE#PBF is versatile and can be used in a wide range of applications, including but not limited to:

• Energy Harvesting Systems
• Backup Power Systems
• Supercapacitor Chargers
• Portable Instruments
• Uninterruptible Power Supplies (UPS)
• Wireless Sensors

Conclusion

Linear Technology's LTC3128EFE#PBF is a sophisticated and reliable solution for managing power in systems that require a seamless transition between buck and boost modes. Its high charging current, integrated balancer, and wide input voltage range make it an excellent choice for designers looking to incorporate supercapacitors into their power management schemes, especially in portable and energy-efficient applications.