Analog Devices LTC4120-4.2

Overview

Topology	Wireless Power Transfer
Input voltage	4.75-5.25 V
Switching frequency	50-250 kHz

Description

LTC4125 Driving a 24μH Transmit Coil at 103kHz, with 1.3A Input Current Threshold, 119kHz FrequencyLimit and 41.5°C Transmit Coil Surface Temperature Limit in a Wireless Power System with LTC4120-4.2 as a400mA Single Cell Li-Ion Battery Charger at the Receiver

Features

Monolithic 5W Wireless Power Transmitternn AutoResonantTM Switching Frequency Adjusts to ResonantCapacitance and Transmit Coil Inductancenn Transmit Power Automatically Adjusts to ReceiverLoadnn Input Voltage Range: 3V to 5.5Vnn Integrated 100mΩ Full Bridge Switchesnn Multiple Foreign Object Detection Methodsnn Programmable Average Input Current Limit andMonitornn NTC Input for System/Component TemperatureQualified Power Transfernn Wide Operating Switching Frequency Range:50kHz to 250kHznn Thermally Enhanced 4mm × 5mm QFN 20-Lead Package

Typical applications

Industrial Handhelds
Medical Equipment
Hermetically and/or Electrically Insulated Devices
Military Sensors and Devices

More information

Products

	Order Code	Datasheet	Simulation	Downloads	Status	Product series	Compliance	Size	L(µH)	I_R(A)	R_{DC max.}(mΩ)	f_res(MHz)	Q(%)	P(W)	Samples
	760308100110	WE-WPCC Wireless Power Transfer Transmitter Coil, Qi - A10; MP-A1/A7, Ø 50 x 6 mm	Simulation	Downloads8 files EDA models: Components ZIP ALT Altium_WE-WPCC (rev25a).IntLib \| 9.3 MB CDS Cadence_WE-WPCC (rev19c).zip \| 49.4 MB EAG Eagle_WE-WPCC (rev25a).lbr \| 369.5 KB KIC KiCad_WE-WPCC (rev25b).zip \| 102.4 MB ZUK Cadstar_WE-WPCC (rev20a).zip \| 27 KB CAD files ZIP 3D 3d_760308100110 (rev1).pdf \| 2.2 MB IGS 760308100110 (rev1).igs \| 2.3 MB STP 760308100110 (rev1).stp \| 1.1 MB	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-WPCC Wireless Power Transfer Transmitter Coil	ComplianceQi - A10; MP-A1/A7	SizeØ 50 x 6 mm	Inductance24 µH	Rated Current6 A	DC Resistance100 mΩ	Self Resonant Frequency5 MHz	Q-Factor180 %	Power Capability [1]100 W
	760308101303	WE-WPCC Wireless Power Transfer Receiver Coil, works with Qi Rx IC's, Ø 26 x 1.3 mm	Simulation	Downloads8 files EDA models: Components ZIP ALT Altium_WE-WPCC (rev25a).IntLib \| 9.3 MB CDS Cadence_WE-WPCC (rev19c).zip \| 49.4 MB EAG Eagle_WE-WPCC (rev25a).lbr \| 369.5 KB KIC KiCad_WE-WPCC (rev25b).zip \| 102.4 MB ZUK Cadstar_WE-WPCC (rev20a).zip \| 27 KB CAD files ZIP 3D 3d_760308101303 (rev1).pdf \| 7.9 MB IGS 760308101303 (rev1).igs \| 3.8 MB STP 760308101303 (rev1).stp \| 1.5 MB	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-WPCC Wireless Power Transfer Receiver Coil	Complianceworks with Qi Rx IC's	SizeØ 26 x 1.3 mm	Inductance47 µH	Rated Current1.5 A	DC Resistance500 mΩ	Self Resonant Frequency8 MHz	Q-Factor25 %	Power Capability [1]20 W

IC manufacturers (103)

5W AutoResonant Wireless Power Transmitter