AP9211SA-AM-HAC-7

PMIC - Battery Management

AP9211SA-AM-HAC-7 is an advanced rechargeable li-ion battery management integrated circuit (IC), empowered by multiple integrated protection and monitoring functions, so as to better secure and build confidence for li-ion battery pack applications, including laptop, and tablet applications.

Application Field

AP9211SA-AM-HAC-7 is mainly used in lithium ion battery applications. It is a versatile and intelligent power management IC and provides a great choice for building a reliable, long-lasting and safe li-ion battery engineering design, such as mobile phones, digital products, power tools, and medical equipment. AP9211SA-AM-HAC-7 provides not only robust safety capabilities, but also high-efficiency charging functions, such as pre-charging, fast charging, and charge termination.

Working Principle

The primary purpose of AP9211SA-AM-HAC-7 is to provide protective functions when charging and discharging lithium batteries. The IC monitors the battery voltage, battery current, temperature and other parameters, and identifies abnormal conditions when the battery is in the process of charging and discharging. When the monitored parameters exceed certain limits, the IC will turn off the charging/discharging path and thus make the circuit more reliable. In case of over charge and discharge, AP9211SA-AM-HAC-7 closes the circuit before the battery may be damaged.

The AP9211SA-AM-HAC-7 battery management IC also offers high-efficiency functions like temperature monitoring. The temperature acquired will then be used to determine the customer’s desired level of charging or discharging and then the IC will adjust the charging/discharging process to the right level. The IC can also detect battery stacks, providing a reliable way to identify the state of the battery. And the AP9211SA-AM-HAC-7 can be connected to a host system, enabling fault alerts and protection when needed.

In addition, the IC provides ADC converters to measure battery voltage, charging current, discharging current and temperature. With these parameter readings, the battery’s SOC (state of charge) can be accurately determined. This battery management function allows designers to come up with better charging and discharging design. Furthermore, the AP9211SA-AM-HAC-7 includes a 4-bit I2C slave interface for external data communication so that the customers can implement such functions as setting the pre-charge voltage, selecting the charging type, and selecting the discharge current.

Conclusion

The ability of AP9211SA-AM-HAC-7 to measure battery voltage, charging current, discharging current and temperature makes it a powerful choice when designing a li-ion battery management system. The combination of robust safety and monitoring features, combined with the high-efficiency charging functions, makes AP9211SA-AM-HAC-7 an ideal choice for applications such as mobile phones and medical equipment. Furthermore, with the inclusion of a host interface, this IC can be easily integrated into existing systems.