The MP2608 is a dual-input, linear, high performance low-cost single cell Li-Ion or Li-Polymer battery charger. It accepts two power inputs, one from a USB (Universal BUS) port and the other from an AC adapter. By integrating high voltage input protection into the charger IC, the MP2608 can tolerate an input surge up to 28V. Due to the protection inputs function, low-cost, large output tolerance adapters can be used safely. The device features constant current (CC) and constant voltage (CV) charging modes with programmable charge currents (100mA to 1.0A), current blocking and trickle charge. The charge current for adapter input can be programmed by an external resistor, while the charge current for USB input is pre-set at 450mA.The device also provides charge status and fault indications to the system. For guaranteed safe operation, the MP2608 folds back charge current when the device is heated up due to limited PCB space. Other safety features are including battery temperature monitoring, and programmable timer to complete the charging cycle. MP2608 is available in a 10-pin 3mm x 3mm QFN package.