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SY6302 Sample Application
General Description

The SY6302 is an ultra-low power battery gauge for 1-series Li-ion battery packs. 
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 SY6302 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 SY6302 is available in packages of 2mm x 3mm DFN8 and 1.43mm x 1.43mm CSP9 (0.5mm pitch).

Features

Precision Measurements with 16-bit ADC

Low power consumption: Typical shutdown current : 0.5uA; Typical normal current : 5uA

Low-voltage(2V) operation

Algorithm with patented technology: Temperature and load compensation; Smoothing feature to avoid SOC jumps

Support batteries with different chemistries

Ultra-small package and PCB solution sizes: Support 1.43mm x 1.43mm CSP9 package

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

Typical Application Circuit Diagram
Applications

Smart watch

Portable devices and accessory