The MWCT1003A from NXP Semiconductors is a Wireless Charging Transmitter with Voltage 2.7 to 3.6 V, Input Voltage Range 0.35 to 5.5 V, Operating Temperature -40 to 105 Degrees C, Storage Temperature -55 to 150 degrees C. Tags: Surface Mount. More details for MWCT1003A can be seen below.