LTC4124

RECOMMENDED FOR NEW DESIGNS

100mA Wireless Li-Ion Charger with Low Battery Disconnect

Data Sheet (Rev. A) Product Selection Table
Part Models
2
1ku List Price
Starting From $3.12
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    Part Details

    • 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
    LTC4124
    100mA Wireless Li-Ion Charger with Low Battery Disconnect
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    Documentation

    Data Sheet 1

    User Guide 4

    Technical Articles 2

    Learn More
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    Software Resources

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    Tools & Simulations

    LTspice 1

    Models for the following parts are available in LTspice:

    • LTC4124
    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.

    Evaluation Kits

    eval board
    schematic 1
    schematic 2
    schematic 3
    DC2770A-A-KIT

    LTC4124/LTC4125, 50mA Wireless Li-Ion Charger Demonstration Kit

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    Product Details

    DC2770A-A-KIT is a kit of the DC2773A-A transmitter board (featuring LTC4125) and the DC2775A-C (featuring LTC4124). The DC2775A-C receiver board can charge a single Li-Ion battery at up to 50 mA with an air gap of 3.0 mm to 5.0 mm between the transmit and receive coils. The DC2773A-A transmitter board supports Foreign Object Detection via the LTC4125.

    eval board
    schematic 4
    schematic 5
    DC2769A-B

    LTC6990/LTC4124 Demo Board | 25mA Wireless Li-Ion Charger Demonstration Kit

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    Product Details

    DC2769A-B-KIT is a kit of the DC2771A-B transmitter board, featuring LTC6990 and the DC2775A-B, featuring LTC4124. The DC2775A-B receiver can charge a single Li-Ion battery at up to 25mA with an air gap of 2mm to 5mm between the transmit and receive coils. 

    eval board
    schematic 6
    schematic 7
    schematic 8
    DC2769A-A

    LTC6990/LTC4124 Demo Board | 10mA Wireless Li-Ion Charger Demonstration Kit

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    Product Details

    DC2769A-A-KIT is a kit of the DC2771A-A transmitter board, featuring LTC6990, the DC2775A-A, featuring LTC4124, and the DC2774A application-sized receiver board featuring LTC4124. The DC2775A-A receiver can charge a single Li-Ion battery at up to 10mA with an air gap of 0.5mm between the transmit and receive coils. 

    eval board
    schematic 9
    schematic 10
    schematic 11
    DC2770A-B-KIT

    LTC4124/LTC4125, 100mA Wireless Li-Ion Charger Demonstration Kit

    Buy Now View Details

    Product Details

    DC2770A-B-KIT is a kit of the DC2773A-B transmitter board (featuring LTC4125) and the DC2775A-D (featuring LTC4124). The DC2775A-D receiver board can charge a single Li-Ion battery at up to 100 mA with an air gap of 3.0 mm to 5.0 mm between the transmit and receive coils. The DC2773A-B transmitter supports Optimum Power Search and Foreign Object Detection features via LTC4125.

    DC2770A-A-KIT
    LTC4124/LTC4125, 50mA Wireless Li-Ion Charger Demonstration Kit
    DC2769A-B
    LTC6990/LTC4124 Demo Board | 25mA Wireless Li-Ion Charger Demonstration Kit
    DC2769A-A
    LTC6990/LTC4124 Demo Board | 10mA Wireless Li-Ion Charger Demonstration Kit
    DC2770A-B-KIT
    LTC4124/LTC4125, 100mA Wireless Li-Ion Charger Demonstration Kit

    Latest Discussions

    21 Weeks Ago
    CHRG pin behaviour when the battery is quite charged
    23 Weeks Ago
    Poor range, heat and instability in LTC4125
    23 Weeks Ago
    Control Load Switch with Charg Pin
    View related discussion on EngineerZone®

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