LTC4120

Wireless Charging Receiver by Analog Devices (4 more products)

Note : Your request will be directed to Analog Devices.

The LTC 4120 from Analog Devices is a Wireless Receiver IC for battery charging applications. It has an adjustable programmable float voltage from 3.5 to 11 V. The device uses a Dynamic Harmonization Control (DHC) technique that allows high-efficiency contactless charging across an air gap. The receiver IC regulates its input voltage from 12.5 to 40 V via the DHC pin. This technique modulates the resonant frequency of a receiver tank to automatically adjust the power received as well as the power transmitted to provide an efficient solution for wirelessly charging battery-powered devices.

Wireless charging with the LTC4120 provides a method to power devices in harsh environments without requiring expensive failure-prone connectors. This allows products to be charged while locked within sealed enclosures, or in moving or rotating equipment, or where cleanliness or sanitation is critical.

This full-featured battery charger includes accurate RUN pin threshold, low voltage battery preconditioning, and bad battery fault detection, timer termination, auto-recharge, and NTC temperature qualified to charge. An auto-restart feature starts a new charging cycle if the battery voltage drops by 2.2%. It is available in a low profile 16-Lead (3 × 3 × 0.75 mm) QFN package and is suitable for handheld Instruments, industrial/military sensors and devices, portable medical devices, and small & electrically isolated devices.

Product Specifications

    Product Details

    • Part Number :
      LTC4120
    • Manufacturer :
      Analog Devices
    • Description :
      3.5 to 11 V Wireless Power Receiver for Hearing Aids

    General Parameters

    • Application :
      Handheld Instruments, Industrial/Military Sensors and Devices, Harsh Environments, Portable Medical Devices, Physically Small Devices, Electrically Isolated Devices
    • Input Voltage :
      12.5 to 40 V
    • Output Voltage :
      3.5 to 11 V
    • Output Current :
      50 to 400 mA
    • Dimension :
      3mm x 3mm x 0.75mm
    • Storage Temperature :
      -65 to 150 Degree C

    Technical Documents

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