Analog Devices LTC4124

Overview

Topology	Wireless Power Transfer
Input voltage	4.5-5 V
Switching frequency	50-10000 kHz
Output 1	0.1 A
IC revision	A

Description

The LTC®4124 is a simple high performance wireless Li-Ion charger with low battery disconnect. The pin selectable charge current (up to 100mA) and charge voltage ensure versatility while minimizing the numberof required external components.

Features

Complete Wireless Power Receiver, Li-Ion Charger and PowerPath™ Controller
Wireless Input Power Control and Rectification
Wideband Wireless Power Frequency: DC to >10MHz
Pin-Selectable Charge Current: 10mA/25mA/50mA/ 100mA
Pin-Selectable Charge Voltage: 4.0V/4.1V/4.2V/4.35V
Pin-Selectable Low Battery Disconnect: 2.7V/3.2V
Zero Battery Drain Current in Disconnect/Ship Mode
Pin-Selectable Low Battery Pre-Charge Current Enable
NTC Input for Temperature Qualified Charging
Safety Charge Termination Timer
Tiny Total Solution Size with Few Externals
Small Thermally Enhanced 12-lead2mm × 2mm LQFN Package

Typical applications

Medical Wireless Sensors
Military Wearables, High End Wireless Headsets, Streaming Headsets with Bluetooth Connectivity, Virtual Reality Headsets, High End Remote Control, IoT 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
	760308101104	WE-WPCC Wireless Power Transfer Transmitter Coil, works with Qi Tx IC's, Ø 20 x 2.8 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_760308101104 (rev1).pdf \| 66.6 KB IGS Download_IGS_760308101104 (rev1).IGS \| 1.9 MB STP DownloadSTP_760308101104 (rev1).STEP \| 1.5 MB	Status Activei\| Production is active. Expected lifetime: >10 years.	Product seriesWE-WPCC Wireless Power Transfer Transmitter Coil	Complianceworks with Qi Tx IC's	SizeØ 20 x 2.8 mm	Inductance6.8 µH	Rated Current2.5 A	DC Resistance130 mΩ	Self Resonant Frequency20 MHz	Q-Factor42 %	Power Capability [1]50 W
	760308101220	WE-WPCC Wireless Power Transfer Receiver Coil, works with Qi Rx IC's, Ø 17 x 0.8 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_760308101220 (rev1).pdf \| 4.9 MB IGS Download_IGS_760308101220 (rev1).igs \| 1.9 MB STP Download_STP_760308101220 (rev1).stp \| 1.3 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 17 x 0.8 mm	Inductance12.6 µH	Rated Current1.1 A	DC Resistance360 mΩ	Self Resonant Frequency19 MHz	Q-Factor20 %	Power Capability [1]20 W

IC manufacturers (103)

100mA Wireless Li-Ion Charger with Low Battery Disconnect