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LTC4124
100mA Wireless Li-Ion Charger with Low Battery Disconnect
Overview
Features and Benefits
- 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-lead 2mm × 2mm LQFN Package
Product Details
The LTC4124 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 number of required external components.
Wireless charging with the LTC4124 allows devices to be charged while sealed within enclosures and eliminates bulky connectors in space-constrained applications. Elimination of exposed conductive connectors also creates more robust devices while ensuring an effortless end-user experience.
The LTC4124 includes an NTC input for safe temperature qualified charging and a battery disconnect feature that prevents damage to a battery due to over-discharging.
The 2mm × 2mm LQFN package and minimal number of external components make the LTC4124 well-suited for low power portable applications where small solution size is mandatory.
Applications
- Medical Wireless Sensors
- Military Wearables
- High End Wireless Headsets
- Streaming Headsets with Bluetooth Connectivity
- Virtual Reality Headsets
- High End Remote Control
- IoT Devices
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (4)
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
Reference Materials
Rarely Asked Questions (1)
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Support & Discussions
LTC4124 Discussions
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.