Battery Fuel Gauge LSI Smart LiB Gauge for 1-Cell Lithium-ion/ Polymer (Li+) with IDD Report LC709205F www.onsemi.com Overview LC709205F is a Fuel Gauge for 1Cell Lithiumion/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 HGCVR2. The HGCVR2 algorithm provides accurate RSOC information even under unstable conditions (e.g. changes of battery temperature, loading, aging and WLCSP12 1.48x1.91x0.51 CASE 567XE selfdischarge). 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 HGCVR2 algorithm MARKING DIAGRAM 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 205** manufacturing process of applications can be avoided. AWLYW 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 A and it is suitable for applications 205** = 20501 (LC709205FXE01TBG) such as wearables and 1 series N parallel batteries. A = Assembly Site WL = Wafer Lot Number Features YW = Assembly Start Week HGCVR2 Algorithm Technology Accurate RSOC of Aging Battery Stable Gauging by Automatic Convergence of Error ORDERING INFORMATION See detailed ordering and shipping information on page 22 of Immediate Accurate Gauging after Battery Insertion this data sheet. Eliminates Learning Cycle Low Power Consumption 2 A Operational Mode Current Applications Improvement of the Battery Safety by Alarm Function Wearables / IoT Devices RSOC / Voltage / Current / Temperature Smartphones/PDA Devices Battery Lifetime Measurement Digital Cameras SOH / Cycle Count / Operating Time Full Charge Capacity / Remaining Capacity Portable Game Players Remaining Time Estimation USB-related Devices Time to Full / Time to Empty Three Temperature Inputs Inputs to sense two NTC Thermistors 2 Via I C Detection of Battery Operating Conditions Charging / Discharging Detection of Battery Insertion 2 I C Interface (supported up to 400 kHz) These Devices are PbFree, Halogen Free/BFR Free and are RoHS Compliant Semiconductor Components Industries, LLC, 2019 1 Publication Order Number: September, 2019 Rev. 0 LC709205F/DLC709205F Application Circuit Example Application Battery Pack PACK+ 1 F SCL SCL T Application TSENSE1 SDA processor SDA LC709205F ALARMB ALARMB REG PACK Figure 1. Example of an Application Schematic using LC709205F (The temperature is measured using TSENSE1 and TSENSE2 pins.) Application Battery Pack PACK+ 1 F SCL SCL Application T TSENSE1 processor SDA SDA LC709205F ALARMB ALARMB REG Thermistor sense PACK Figure 2. Example of an Application Schematic using LC709205F 2 (The temperature is sent via I C.) www.onsemi.com 2 SystemVDD SystemVDD SystemVSS SystemVSS 10 k 10 k 10 k 10 k 10 k 10 k NTC Thermistor SRP SRP TSENSE2 TSENSE2 SRN VDD SRN VDD VSS VSS 2.2 F 2.2 F NTC Thermistor NTC Thermistor Protection IC Protection IC