1 Features
• Fully integrated battery gas gauge, protector, current limiter, and authenticator
• Ultra-low power 32-bit RISC processor
• Battery chemistries supported include Li-ion with LCO, NMC, or LFP cathodes and with graphite or Si-anodes
• High-accuracy analog front end with two independent ADCs:
– 18-bit low offset delta-sigma ADC for Coulomb counting with ±100mV input range
– 16-bit delta-sigma ADC for cell voltage and internal and external temperature sensors
– Support for simultaneous current and voltage sampling
• High-side or low-side current sensing for system flexibility
• Battery fuel gauging based on patented Dynamic Z-Track™ technology
– Models battery impedance for accurate time-toempty predictions for static and dynamic loads
– Automatically adjusts for aging, temperature, and rate-induced effects on the battery
• Programmable safety and protection:
– Hardware- and firmware-level OVP, UVP, OCC, OCD, SCD protections
– Overtemperature (OT) and undertemperature (UT) protections
• Integrated high efficiency high-side NMOS protection FET drivers
– Current limiter with programmable CC-CV profile during charge mode
– Ideal diode controller during discharge mode
• Up to 1MHz I2C bus communications interface with 1.2V- and 1.8V-level support
• ECC ECDSA and SHA-256 authentication support with secure memory
• Ultra-compact, 15-ball DSBGA package (YAH)