LTC4124
RECOMMENDED FOR NEW DESIGNS100mA Wireless Li-Ion Charger with Low Battery Disconnect
- Part Models
- 2
- 1ku List Price
- Starting From $3.95
Overview
- 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
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
Documentation
Data Sheet 1
User Guide 4
Technical Articles 2
Rarely Asked Question 1
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. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC4124EV#TRMPBF | 12-Lead LQFN (2mm x 2mm x 0.74mm) | ||
| LTC4124EV#TRPBF | 12-Lead LQFN (2mm x 2mm x 0.74mm) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC4124
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.
Evaluation Kits
LTC6990/LTC4124 Demo Board | 10mA Wireless Li-Ion Charger Demonstration Kit
Resources
LTC6990/LTC4124 Demo Board | 25mA Wireless Li-Ion Charger Demonstration Kit
Resources
Software
LTC6990/LTC4124 Demo Board | 10mA Wireless Li-Ion Charger Demonstration Kit
Resources
LTC6990/LTC4124 Demo Board | 25mA Wireless Li-Ion Charger Demonstration Kit
Resources
Software
LTC4124/LTC4125, 50mA Wireless Li-Ion Charger Demonstration Kit
Resources
LTC4124/LTC4125, 50mA Wireless Li-Ion Charger Demonstration Kit
Resources
LTC4124/LTC4125, 100mA Wireless Li-Ion Charger Demonstration Kit
Resources
LTC4124/LTC4125, 100mA Wireless Li-Ion Charger Demonstration Kit