CW2217BAAD

www.cellwise-semi.com CW2217BAAD-DS V1.1 CW2217BAAD Fuel Gauge IC with Current Sensing Features              System-Side or Pack-Side Fuel Gauging High C-Rate Charging Compliance High precision ADCs for Voltage, Current and Temperature Measurement High Side or Low Side Current Sensing Support Low to 1mOhm Sense Resistor External Thermistor or Host Reported Temperature Battery Voltage, Current, Temperature, SOC, and Cycle Count Report No Offset Accumulation during Life Time No Full-To-Empty Calibration Cycles Required Interrupt for SOC, Temperature and 1% SOC Change Ultra-low Power Consumption  Active Mode 12µA  Shutdown Mode 0.5µA General I2C Control Interface Lead-Free, DFN-12 Package Applications     Power Banks Tablets and Laptops Power Tools Li+ Battery Pack © 2022 Cellwise Microelectronics General Description The CW2217 is an ultra-compact, system-side or pack-side fuel gauging IC for Lithium-ion based batteries used in wearable and portable devices. The CW2217 tracks battery operating conditions and performs state-of-the-art algorithm to calculate the State-of-Charge (SOC) of various battery chemistry systems, including LiCoOx, polymer Liion and LiMnOx etc. The CW2217 includes two high precision ADCs, voltage reference circuits and build-in NTC thermistor bias circuits. It continually monitors the battery voltage and temperature and measures the current flow through the sense resistor. All the measurements and the battery characterization data are utilized by the IC embedded FastCali algorithm and accurate battery SOC is reported and refreshed in a wide variety of operating conditions. The CW2217 also provides alarm functions. When SOC or temperature reaches the pre-programmed threshold, the relevant interrupt will be generated to alert the host MCU. The CW2217 use a 2-wire I2C compatible serial interface that operates in standard mode or fast mode. The CW2217BAAD is available in lead-free 2.5mmx4.0mm, 12-lead DFN package. 1 Typical Application System P+ Battery Pack PMU SCL VCELL SDA VDD CW2217 MCU NC INT_N Protection TS CSN CSP VSS NTC T PFigure 1．Typical Application for Single Cell Ordering Information PART I2C ADDRESS OPERATING TEMPERATURE PACKAGE TOP MARK SHIPPING CW2217BAAD 0x64 -40oC to 85oC DFN-12 2217BA ADXXXX Tape&Reel/ 6000 Note: XXXX stands for manufacture info. Contact manufacturer for details. 2 © 2022 Cellwise Microelectronics