The SY6303 is an ultra-low power battery gauge with current sensing.
The IC integrates a flash-programmable 32-bit CPU, allowing both battery parameters and firmware to be upgraded online via I2C.
It provides precision measurements of current, voltage and temperature. It supports both high-side and low-side current sensing. The temperature of the battery pack is measured using an internal temperature sensor or an external thermistor.
The SY6303 tracks battery operating conditions and performs an algorithm to calculate the SOC (state of charge). Accurate current sensing is not essential for this algorithm.
The SY6303 is available in packages of 2.5mm x 4.0mm DFN12.
Precision Measurements with 16-bit ADC
Low power consumption: Typical shutdown current: 0.5μA; Typical normal current: 5μA
Low-voltage (2.1V) operation
Algorithm with patented technology: Temperature and load compensation; Smoothing feature to avoid SOC jumps; Support batteries with different chemistries
Report state of health
Flash-programmable 32-bit MCU: Supports parameter and FW upgrade; Diagnostic lifetime data monitor and black box recorder; Authentication for battery pack security; Supports user-programmable data
Unique identification number
Active high or low pulse or level interrupt pin
POS
Smart watch
Portable devices and accessory