LTC4124
Info : RECOMMENDED FOR NEW DESIGNS
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LTC4124

100mA Wireless Li-Ion Charger with Low Battery Disconnect

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $3.12
Features
  • 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
Additional Details
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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
Part Models 2
1ku List Price Starting From $3.12

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4124EV#TRMPBF
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  • HTML
LTC4124EV#TRPBF
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  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 4

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DC2769A-B

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

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DC2769A-B

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

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

Product Detail

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. 
reference details image

DC2769A-A

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

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DC2769A-A

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

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

Product Detail

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. 
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DC2770A-A-KIT

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

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DC2770A-A-KIT

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

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

Product Detail

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.
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DC2770A-B-KIT

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

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DC2770A-B-KIT

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

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

Product Detail

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.
Tools & Simulations

Tools & Simulations 1

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.

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