The HSM12X0 series of lithium battery pack protection chips include HSM1220, HSM1230 and HSM1240. This series of chips integrates a high-precision ADC, which can collect the voltage, current and temperature signals of the battery pack and transmit the data to the host microcontroller through the I2C interface. The chip also has simple overvoltage protection, undervoltage protection, overcurrent protection, and short circuit protection, and supports passive equalization.

 

The HSM12X0 series chips can be used as part of a monitoring and protection solution for 3-15 series battery packs. Through I2C communication, the MCU can use the HSM12X0 to perform battery management functions such as monitoring (cell voltage, pack current, pack temperature), protection (controlling charge/discharge FETs), and pack balancing functions. An integrated analog-to-digital converter enables a purely digital readout of the MCU's key battery pack parameters (voltage, current, and temperature), the calibration of which is handled during manufacturing. The HSM12X0 is designed with low power consumption in mind. It can control the power consumption of the entire chip by enabling/disabling sub-modules in the integrated circuit IC, and can switch the battery pack to an ultra-low power consumption state using SHIP mode.