IC manufacturers Analog Devices

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Analog Devices LTC4123

Low Power Wireless Charger for Hearing Aids

Overview

TopologyWireless Power Transfer
Input voltage5 V
IC revisionA

Description

The LTC®4123 is a low power wireless receiver and aconstant-current/constant-voltage linear charger for NiMHbatteries. An external programming resistor sets the chargecurrent up to 25mA. The temperature compensated chargevoltage feature protects the NiMH battery and preventsovercharging.

Features

Complete Low Power Wireless NiMH Chargernn Low Minimum Input Voltage: 2.2Vnn Small Total Solution Volumenn 1.5V, 25mA Linear Single-Cell NiMH Chargernn Temperature Compensated Charge Voltagenn Integrated Rectifier with Overvoltage Limitnn Zinc-Air Battery Detectionnn Reverse Polarity Protectionnn Thermally Enhanced 6-Lead (2mm × 2mm)DFN package

Typical applications

  • Hearing Aids
  • Moving and/or Rotating Equipment
  • Smart Cards
  • Fitness Devices

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