28V, 1A Li + Linear Battery Charger with Timer and LDO Mode

The MP26058 is a linear, high performance single cell Li-Ion or Li-Polymer battery charger with on-chip input polarity reverse protection. By integrating high voltage input protection into the charger IC, the MP26058 can tolerate an input surge up to 28V. The LDO mode makes the MP26058 suitable for power up the system when battery is not present. The device features constant current (CC) and constant voltage (CV) charging modes with programmable charge currents (200mA to 1A), current blocking. The other features include the programmable battery full indication threshold and the LDO mode operation which keeps charging the battery after battery-full is asserted and stay in full-state as long as the valid input is maintained. MP26058 can provide load to the system if no battery is connected. For guaranteed safe operation, the MP26058 limits the die temperature to a preset value when the device is heated up due to limited PCB space. Other safety features are battery temperature monitoring, and programmable timer to prevent prolonged charging a dead battery. MP26058 is available in 10-pin 3mm x 3mm DFN packages.