LC709209F

DATA SHEET www.onsemi.com Battery Fuel Gauge [Smart LiB Gauge] for 1-Cell Lithium-ion/ Polymer (Li+) with Low Power 2 mA Operation WLCSP12 1.48x1.91x0.51 CASE 567XE MARKING DIAGRAM LC709209F Overview LC709209F is a Fuel Gauge (in other words, Fuel Gauge IC, Gas Gauge, Battery Monitor or Battery 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 feature of the HG−CVR2 algorithm makes it highly applicable in various applications. The device can immediately start battery measurement by setting a few parameters after battery insertion, without the need for long learning cycles that can complicate the application development process. The device also supports battery safety by alarm functions and SOH (State of Health) reporting to the application processor. The operating consumption current of 2 mA is very low, making it suitable for applications such as wearables and 1series N parallel batteries. Features HG−CVR2 Algorithm Technology ♦ Small Footprint: No Need for Current Sensing Resistor ♦ Accurate RSOC of Aging Battery ♦ Stable Gauging by Automatic Convergence of Error ♦ Immed...