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Overview
| Topology | Wireless Power Transfer |
| Input voltage | 5 V |
| IC revision | A |
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
- Fitness Devices
- Smart Cards
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Compliance | Size | L(µH) | IR(A) | RDC max.(mΩ) | fres(MHz) | Q(%) | P(W) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-WPCC Wireless Power Transfer Receiver Coil, Qi - Airfuel Alliance, 28,9 x 15,7 x 0,76 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-WPCC Wireless Power Transfer Receiver Coil | ComplianceQi - Airfuel Alliance | Size28,9 x 15,7 x 0,76 mm | Inductance7.5 µH | Rated Current1.55 A | DC Resistance380 mΩ | Self Resonant Frequency23 MHz | Q-Factor16 % | Power Capability [1]20 W | ||||
 | WE-WPCC Wireless Power Transfer Receiver Coil, works with Qi Rx IC's, Ø 10 x 1.6 mm | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-WPCC Wireless Power Transfer Receiver Coil | Complianceworks with Qi Rx IC's | SizeØ 10 x 1.6 mm | Inductance13 µH | Rated Current0.8 A | DC Resistance500 mΩ | Self Resonant Frequency26 MHz | Q-Factor17 % | Power Capability [1]15 W |