LTC4125EUFD#PBF

LINEAR TECHNOLOGY  LTC4125EUFD#PBF  芯片, 无线功率收发器, 5.5V, QFN-20 新

The is a 5W AutoResonant wireless power transmitter in 20 pin QFN package. The 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. The device controls current flow in a series connected transmit coil LC network to create simple, safe and versatile wireless power transmitter. The LTC4125 automatically adjusts its driving frequency to match LC network resonant frequency. This AutoResonant switching allows device to deliver maximum power from a low voltage input supply to a tuned receiver. To optimize system efficiency, it employs a periodic transmit power search and adjusts the transmission power based on the receiver load requirements. The device stops delivering power during a fault condition or if a foreign object is detected. It is used in hermetically or electrically insulated devices, military sensors and devices, medical equipment and industrial handhelds.

.

Input voltage range from 3V to 5.5V

.

AutoResonant switching frequency adjusts to resonant capacitance and transmit coil inductance

.

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

.

Wide operating switching frequency range from 50KHz to 250KHz

.

Operating temperature range from -40°C to 125°C