AOZ9250DI

AOZ9250DI is a PMIC (Power Management Integrated Circuit) controller used in battery management system. It is specially designed to reduce the cost, need less external components, increase system performance and power efficiency. The AOZ9250DI provides a complete solution for Li-Ion and LiPo chemistry battery pack protection, balancing, state management and monitoring.

The AOZ9250DI application field is broad, from medical to consumer markets. It can be used in consumer applications such as tablets, handhelds, and portable devices; automotive applications such as starters, chargers, and battery monitoring systems; and industrial applications such as UPS, alarm batteries, and portable power solutions. With protection features for cells and packs, it can be used in Li-Ion and LiPo cells. For example, it provides a 4S BMS that can manage both 4 cells in series (max 15V input) or 2 cells in parallel (max 0.5V input to 10V output).

The AOZ9250DI working principle is relatively simple. It has three main components: the cell protection circuit, the balancing circuit and the monitoring circuit. The cell protection circuit is used to cut off the power supply if the battery pack is overcharged or discharged (overcurrent protection). It also accounts for over temperature protection and short circuit protection. The balancing circuit keeps the voltage of the single cells at the same level, which improves the overall efficiency of the battery. The monitoring circuit records and communicates the cell voltage and temperature levels, which allows improved overall system performance.

The AOZ9250DI is able to provide cost-effective, reliable and secure monitoring and protection for multi-cell Li-Ion battery packs. It features an adjustable output voltage for 3S, 4S and 5S configurations, as well as over temperature, over current and short-circuit protection. Moreover, the AOZ9250DI can supply full system monitoring, including cell voltage, temperature, over current, max current and min current. With its small footprint, low cost and wide range of functionality, the AOZ9250DI is an ideal choice for multi-cell Li-Ion battery pack applications.