Datasheet Linear Technology LTC4125

LTC4125
5W AutoResonant Wireless
Power Transmitter
Features Description Monolithic 5W Wireless Power Transmitter
nn AutoResonantTM Switching Frequency Adjusts to Resonant Capacitance and Transmit Coil Inductance*
nn Transmit Power Automatically Adjusts to Receiver
Load*
nn Input Voltage Range: 3V to 5.5V
nn Integrated 100mΩ Full Bridge Switches
nn Multiple Foreign Object Detection Methods
nn Programmable Average Input Current Limit and
Monitor
nn NTC Input for System/Component Temperature
Qualified Power Transfer
nn Wide Operating Switching Frequency Range:
50kHz to 250kHz
nn Thermally Enhanced 4mm × 5mm QFN 20-Lead Package The LTC®4125 is a simple and high performance monolithic
full bridge resonant driver capable of delivering over 5W of
power wirelessly to a properly tuned receiver. The device
controls the current flow in a series connected transmit coil
LC network to create a simple, safe and versatile wireless
power transmitter. Applications The LTC4125 also includes a programmable maximum
average input current limit and an NTC input as additional …