New Product Introduction

ON Semiconductor LC709203F fuel gauge for 1-Cell lithium-ion batteries

LC709203F is a Fuel Gauge for a single lithium ion/polymer battery.

ON Semiconductor LC709203F-EN-Image-product-picture

LC709203F is a Fuel Gauge for a single lithium ion/polymer battery. It is part of our Smart LiB Gauge family of Fuel Gauges which measure the battery RSOC (Relative State Of Charge) using its
unique algorithm called HG−CVR. The HG−CVR algorithm eliminates the use of a sense resistor and provides accurate RSOC information even under unstable conditions (e.g. changes of battery;
temperature, loading, aging and self-discharge). An accurate RSOC contributes to the operating time of portable devices.


Key features

  • HG−CVR Algorithm Technology
  • Low Power Consumption
  • Precision Voltage Measurement
  • Precision Timer


Additional features

  • HG-CVR algorithm technology :
    • No external sense resistor
    • 2.8% accuracy of RSOC
    • Accurate RSOC of aging battery
    • Automatic convergence of error
    • Adjustment for parasitic impedance around the battery
    • Simple and Quick Setup
  • Low power consumption : 3μA Operational mode
  • Precision Voltage measurement : ±7.5mV
  • Precision Timer : ±3.5%
  • Alerts for Low RSOC and / or Low Voltage
  • Temperature compensation :
    • Sense Thermistor input Via I2C
  • Detect Battery insertion
  • I2C Interface (up to 400 kHz supported)



  • Wireless Handsets
  • Smartphones/PDA Devices
  • MP3 Players
  • Digital Cameras
  • Portable Game Players
  • USB-related Devices