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
LTC4124 Application Circuit LTC4124 Application Circuit LTC4124 Pin Configuration
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Documentation

Data Sheet 1

User Guide 4

Technical Articles 2

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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
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 3
schematic 4
schematic 5
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 6
schematic 7
schematic 8
DC2770A-B-KIT

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

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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.

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

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

Buy Now View Details

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.

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

Latest Discussions

17 Weeks Ago
RE: Need proper voltage and current around the resonance circuit
25 Weeks Ago
RE: LTC4124 did not start when connencted with battery
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