CW2217BAAD Datasheet | Cellwise

Features - System-Side or Pack-Side Fuel Gauging - High C-Rate Charging pliance - High precision ADCs for Voltage, Current and Temperature Measurement - High Side or Low Side Current Sensing - Support Low to 1m Ohm 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 General Description The CW2217 is an ultra-pact, 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 Li Co Ox, polymer Liion and Li Mn Ox 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 Fast Cali 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 patible serial interface that operates in standard mode or fast mode. The CW2217BAAD is available in Lead-free 2.5mmx4mm, 12-lead DFN package. © 2021 Cellwise Microelectronics Downloaded From Oneyac. Typical Application System Battery Pack P+ SCL SDA CW2217 VCELL VDD...