Texas Instruments, Inc. (TI) has introduced a battery charger integrated circuit to support higher cell capacity batteries and increasing battery charge currents of tablets, e-readers and smartphones. The highly integrated single-cell Li-Ion battery charger has dual inputs, which allow operation from either a USB port or higher power input supply (AC adapter or wireless power input). The two inputs are fully independent from each other and are configurable using the I2C interface or stand-alone interface.
Features include integrated FETs support charge rates up to 2.5 A (10.5 W) from IN input, and 1.5 A from USB input and dual source inputs, AC adapter and USB 2.0/3.0 compatibility provide flexibility in design and applications. The 20 V input with 10.5 V over voltage protection supports low-cost unregulated adapters and poor USB sources while the integrated power path allows system startup from deeply discharged or no battery power operating conditions. The bq2416x battery chargers are available now in a 49-pin WCSP package, suggested resale pricing starts at $3.00 in quantities of 1,000.