LTC4125EUFD#PBF

LTC4125 is a simple and high performance monolithic full bridge resonant driver capable of delivering over 5W of power wirelessly to a properly tuned receiver. This device controls the current flow in a series connected transmit coil LC network to create a simple, safe and versatile wireless power transmitter. It automatically adjusts its driving frequency to match the LC network resonant frequency. This auto resonant switching allows the device to deliver maximum power from a low voltage input supply (3V to 5.5V) to a tuned receiver. To optimize system efficiency, this device employs a periodic transmit power search and adjusts the transmission power based on the receiver load requirements. This device stops delivering power during a fault condition, or if a foreign object is detected. It is used in applications such as hermetically and/or electrically insulated devices, military sensors and devices, medical equipment, industrial handhelds etc.

• Transmit power automatically adjusts to receiver load
• Integrated 100Mohm full bridge switches
• Multiple foreign object detection methods
• Programmable average input current limit and monitor
• NTC input for system/component temperature qualified power transfer
• Operating frequency range is 50KHz to 250KHz
• Input supply quiescent current is 1mA typical at (TA = 25°C, VIN = VIN1=VIN2 = 5V)
• Operating junction temperature is -40°C to 125°C
• Package style is 20-lead plastic QFN

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ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party