Product Overview: LTC3625IDE#TRPBF

The LTC3625IDE#TRPBF is a high-efficiency, dual supercapacitor charger designed by Linear Technology (now part of Analog Devices) to provide a compact and reliable power management solution for applications requiring backup power, energy harvesting, or momentary power delivery. This integrated circuit is specifically tailored to charge two supercapacitors in series from a single input supply, ensuring balanced charging and protection for the capacitors.

Key Features

• Wide Input Voltage Range: The LTC3625IDE#TRPBF operates over a wide input voltage range from 4.5V to 17V, making it versatile for various power sources and systems.
• Programmable Charge Current: Users can set the charge current up to 150mA per capacitor via a single external resistor, providing flexibility in controlling the charge time and current based on specific application needs.
• Automatic Cell Balancing: This charger incorporates an automatic cell balancing feature, which ensures both supercapacitors charge evenly, thereby maximizing their lifespan and performance.
• Integrated Cell Balancing: No external balancing resistors are required as the LTC3625IDE#TRPBF includes all necessary components for balancing supercapacitors during charging.
• Low Quiescent Current: The device boasts a low quiescent current, which is crucial for power-sensitive applications, minimizing the drain on the power source when the charger is in standby mode.
• Thermal Protection: Built-in thermal protection safeguards the device from damage due to excessive heat, ensuring reliable operation under varying conditions.

Applications

The LTC3625IDE#TRPBF is ideal for a range of applications where supercapacitors are used for energy storage. These include but are not limited to:

• Backup power for memory or real-time clocks in the event of main power loss
• Energy harvesting systems that require periodic charging and discharging cycles
• Power buffering for momentary drops in supply voltage or for high current pulse loads

Quality and Reliability

Linear Technology ensures that the LTC3625IDE#TRPBF meets high standards of quality and reliability. The device is available in a 12-lead DFN package, offering a compact footprint for space-constrained applications. Additionally, it is specified over the industrial temperature range of -40°C to 85°C, making it suitable for deployment in harsh environments.

With its robust feature set and Linear Technology's reputation for precision and durability, the LTC3625IDE#TRPBF stands out as an excellent choice for designers seeking an efficient and reliable supercapacitor charging solution.