5W Wireless Power Receiver and Linear Charger

Description

KTE7800 is a robust wireless power receiver combined with a full-featured single cell Li Ion battery charger. This device is optimized for small low power devices with small coils, while supporting batteries with 30mAh through 1.2AH capacity.
This is a microcontroller based design, optionally configurable by OTP memory, resistor programming features, and/or control via the I2C interface.

KTE7800 is highly integrated including 8k ROM, 8k OTP memory, an LDO regulator with OVP/OCP/RCP, precision CCCVCTJ charger, full charging algorithm, internal battery-disconnect MOSFET, ADC and monitoring functions.

Features

  • Single-Chip Solution up to 5Watt wireless power
  • WPC/Qi v1.3 Standards Compliant
  • Optimized for small coil designs
    • Reliable low voltage startup
    • Programmable 3.2V to 5.2V LDO mode output
    • Programmable current limit
    • Robust fully internal overvoltage protection
    • Multifunction GPIO with switchable high-precision 20µA current source
  • Complete and safe battery charging system
    • CC (±5%), CV (±0.5%), CTJ (±10°C)
    • CC 30mA to 600mA, CV 3mA through 120mA
    • No current sense resistor; 4.35V, 4.20V
    • Dead battery, Prequal, Fast CC, Fast CV, Term, Top-Off, Done, Restart, Disconnect on charged
    • Fault Detection, Charge Timer, JEITA NTC
    • Protections: UVLO, OVP, OCP, SCP, RCP, OTP
  • I2C Serial Interface, Enable input, Interrupt output
  • -40°C to 85°C Operating Temperature Range
  • Standard QFN-24 package (5mm x 5mm x 0.620mm)
  • 24-bump WLCSP package option

Applications

  • Earbud Cases, Mice, IoT Devices
  • Accessories, Peripherals, Gadgets, Toys
  • Other Battery-Powered Equipment
  • No-battery systems requiring wireless power

Packaging Information

Package Dimensions Bumps/Pins/ Pads Package Code
TQFN55-24 5.00mm x 5.00mm x 0.75mm 24 UAK

Purchase

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