The MAX1879 single-cell lithium-ion (Li+) battery charger utilizes an efficient pulse-charging architecture to minimize power dissipation in portable devices. This architecture combines the efficiency of switch-mode chargers with the simplicity and low cost of linear chargers. This simple device, in conjunction with a current-limited wall cube and a PMOS transistor, allows safe and fast charging of a single Li+ cell. The MAX1879 initiates charging in one of three ways: battery insertion, charger power-up, or toggling the THERM pin. Key safety features include continuous voltage and temperature monitoring, a preset charger time-out, and an 8mA precharge current mode to charge near-dead cells. Automatic detection of input power removal shuts down the device, minimizing current drain from the battery. An overall system accuracy of 0.75% ensures that the cell capacity is fully utilized without cycle life degradation. The MAX1879 is offered in a space-saving 8-pin µMAX® package. An evaluation kit (MAX1879EVKIT) is available to help reduce design time. Applications * Cell Phones * Consumer Audio * Cordless Phones * Digital Still Cameras * Global Positioning Systems (GPS) * Pagers * Palmtops, Handy Terminals * Pen Entry Palmtops, PDAs and Organizers * Smart Battery Packs/Chargers * Simple Design Minimizes Heat * Low Component Count, No Inductor * Battery-Full Indicator * 0.75% Accurate Battery Regulation * 1.5µA (max) Battery Current Drain with Wall Cube Removed * Restart Charging at 4.0V * Continuous Overvoltage and Overtemperature Protection * Safely Precharges Near-Dead Cells * Automatic Power-Down when Power Source is Removed * Charges 1 Cell from as Low as 4.5V * Pin-Compatible Upgrade to MAX1679 https://elecena.pl/product/22319768/simple-efficient-1-cell-li-pulse-charger 2022-12-27 https://elecena.pl/product/22319768/simple-efficient-1-cell-li-pulse-charger 2025-01-20