LTC4070EDDB#TRPBF - Shunt Battery Charger

The LTC4070EDDB#TRPBF is a small and versatile shunt battery charger from Linear Technology designed for low power, low capacity batteries. It is a highly integrated solution that allows for efficient charging of Li-Ion/Polymer, LiFePO4, and lead-acid batteries. As a shunt charger, it operates by diverting excess current around the battery when it reaches its programmed voltage, ensuring safe and reliable charging without the need for complex control circuitry.

This product features a wide input voltage range, accommodating sources from 4.95V to 32V, making it suitable for a variety of applications such as energy harvesting, backup power, and remote monitoring systems. The LTC4070EDDB#TRPBF is ideal for charging from sources like solar panels or energy-harvesting devices, where the input power may be limited or variable.

With its low quiescent current of only 550nA, the LTC4070EDDB#TRPBF ensures minimal drain on the power source when the battery is fully charged or disconnected. This is particularly important for applications where power efficiency is critical. The device also includes an internal thermal battery conditioning feature that limits the charge current when the temperature of the battery is outside of safe operating limits, providing additional protection for the battery.

The LTC4070EDDB#TRPBF also offers a programmable charge current up to 50mA with a single external resistor, giving designers the flexibility to tailor the charging profile to the specific needs of their application. The device comes in a compact, 12-lead DFN (4mm x 3mm) package, which is ideal for space-constrained applications.

Furthermore, the LTC4070EDDB#TRPBF features an integrated charge status output that can be used to drive an LED or communicate with a microcontroller, providing real-time feedback on the charging process. This allows for easy monitoring of the battery's charge state in the application.

In summary, the LTC4070EDDB#TRPBF from Linear Technology is a highly efficient and reliable shunt battery charger that offers a compact, easy-to-use solution for a wide range of low-power battery charging applications.