onsemi LC709204FXE-01TBG

LC709204F is a Fuel Gauge for 1−Cell Lithium−ion/Polymer batteries. 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−CVR2. The HG−CVR2 algorithm 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. The Fuel Gauge (in other words, Gas Gauge, Battery Monitor or Battery Gauge) feature of HG−CVR2 algorithm makes LSI highly applicable in various application. The LSI can immediately start battery measurement by setting a few parameters after battery insertion. Learning cycles that make complicated manufacturing process of applications can be avoided. The LSI also supports battery safety by alarm functions and SOH (State of Health) reporting to the application processor. The operating consumption current is very low 2 μA and it is suitable for applications such as wearables and 1 series N parallel batteries.

• HG−CVR2 Algorithm Technology
• Small Footprint: No Need for Current Sensing Resistor
• Accurate RSOC of Aging Battery
• Stable Gauging by Automatic Convergence of Error
• Immediate Accurate Gauging after Battery Insertion
• Eliminates Learning Cycle
• Low Power Consumption
• 2 μA Operational Mode Current
• Improvement of the Battery Safety by Alarm Function RSOC / Voltage / Temperature
• Battery Lifetime Measurement SOH / Cycle Count / Operating Time
• Remaining Time Estimation Time to Full / Time to Empty
• Three Temperature Inputs
• Inputs to sense two NTC Thermistors
• Via I²C
• Detection of Battery Operating Conditions Charging / Discharging
• Detection of Battery Insertion
• I²C Interface (supported up to 400 kHz)
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant

• Wearables / IoT Devices
• Smartphones/PDA Devices
• Digital Cameras
• Portable Game Players
• USB-related Devices