Ultra-low power consumption lithium battery pack protection chip HSM1105 This chip has the functions of voltage, flow temperature and open circuit detection, and can be stacked according to needs to meet the needs of more battery packs. A series of voltage, current and temperature protection functions can be implemented, and no MCU control is required.

 

HSM1105 is a low-power lithium battery pack protection chip. The chip provides a stackable connection method, which makes the chip flexibly suitable for 3-cell to 20-cell battery applications. Chip configurations such as protection threshold, delay time, and fault recovery mode are programmed before leaving the factory, and there are various chip configurations to choose from. The chip provides over-voltage, under-voltage and open-circuit fault detection for each battery, and also detects the current of the battery pack, provides discharge over-current and short-circuit fault detection, and also provides independent discharge and charge over-temperature (OTD and UTD). ) and discharge and charge undertemperature (OTC and UTC) thresholds, further increasing application flexibility. The chip integrates an independent FET driver circuit to control the charge and discharge low-side NMOS FETs separately, and has the FET body diode protection feature. Through the cascade operation mode of the chip, it also provides a multi-cell battery protection scheme with more than 5 batteries