The LC709501F determines what type of device is connected and automatically selects the fastest available method for charging. Advanced users can even reprogram the LC709501F to support custom charge/discharge profiles, as well as USB Type-C and PD Policy Engine functions. This single-chip solution includes integrated fuel gauge function, configurable I/O, LED drivers, I2C interface, and pre-drivers for external- power MOSFETs, providing system flexibility. A design reference kit is available to realize fast time-to-market. The LC709501F supports various output power levels up to 30 W, by changing external MOSFETs. In addition, there is an integrated USB 2.0 Full Speed host controller.
The LC709501F’s USB host controller supports connectivity with iOS and Android applications that enable the device to communicate with the connected smartphone, and subsequently makes use of its display to show information concerning battery health and the charging process (charging time, battery life, number of charging cycles completed, and so forth). The device works with the proprietary charging protocols (such as Fast Charge and Qualcomm® Quick Charge™) now being utilized by smartphone manufacturers to accelerate the charging period. In order to ensure operational longevity, over-current, over-voltage and redundant battery protection mechanisms are all included, as well as a thermistor for monitoring temperature levels. The LC709501F supports an operational temperature range of –40° C to +85° C.
The LC709501F is offered in a QFN-52 (6 × 6 mm) package and is priced at $2.80 per unit in 10,000-unit quantities.