LTC4071EMS8E#PBF

LTC4071 is a Li-Ion/polymer shunt battery charger system with low battery disconnect. It allows simple charging of Li-Ion/Polymer batteries from very low current, intermittent or continuous charging sources. A near-zero current low battery latching disconnect function protects even the lowest capacity batteries from deep discharge and potentially irreparable damage. The 550nA to 50mA operating current makes charging possible from previously unusable sources. With its low operating current the device is well suited to charge low capacity Li-Ion or thin film batteries in energy harvesting applications. The unique architecture of the device allows for an extremely simple battery charger solution, requiring just  one external resistor. It offers a pin selectable float voltage with ±1% accuracy. It is used in application like low capacity, Li-Ion/polymer battery back-up, thin film batteries, energy scavenging/harvesting, solar power systems with back-up, memory back-up, embedded automotive.

• Charger plus pack protection in one IC
• Near zero current (<lt/>0.1nA) low battery disconnect function to protect batteries from over-discharge
• Float voltage accuracy over temperature is 1%
• Maximum shunt current is 50mA minimum
• Ultralow power pulsed NTC float conditioning for Li-Ion/polymer protection
• Suitable for intermittent, continuous and very low power charging sources
• High battery status output
• Operating temperature is -40°C to 125°C
• Package style is 8-lead plastic MSOP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party