AP9211S-DD-HAC-7

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PMICs commonly known as Power management integrated circuits (PMICs) are electronic devices responsible for monitoring, controlling and converting electrical power. They are designed to provide the power required to enable a system or device to be powered ON and remain powered up and running. A battery management integrated circuit ( battery management IC ) is a specific type of PMIC that ensures a defined current, voltage and storage conditions are provided to a system while also protecting the system and battery against short circuits, overcharging and other hazards. The AP9211S-DD-HAC-7, developed by Anpec Electronics Corporation, is a primary lithium ion/polymer battery protection and management IC that features an interface with the battery pack.

TheAP9211S-DD-HAC-7 has a 9-bit input/output interface and a 2-bit-wide ADC channel, as well as 8-bits for self-diagnostics. The device provides four voltage-source outputs, which can be used for driving internal battery charge/discharge control circuits or for monitoring internal and external batteries. The device provides programmable charging and discharging R-C filters, low-battery detect voltage, charge current, and discharging current. The main components of the device are a 904kHz switching regulator and a 2-bit A/D converter.

The AP9211S-DD-HAC-7 is mainly used in portable device applications such as cell phones, tablet computers, and portable media players. In these applications, the power and battery management system must be designed to provide reliable operation and to balance the power demand of the system. The AP9211S-DD-HAC-7 manages the battery power, protecting the system and the battery against the damaging effects of overcharging and short circuiting.

The AP9211S-DD-HAC-7 provides the battery management functionality in three steps:

• First, it measures and monitors the voltage of the battery and its temperature.
• Second, it uses a proportional, integral and derivative (PID) controller to control the output current.
• Finally, it automatically stops the discharge or charging cycle if the battery reaches a critical condition.

The AP9211S-DD-HAC-7 is comprised of three basic components: a 904kHz switching regulator, a 2-bit A/D converter and four voltage-source outputs. The 904kHz switching regulator is used to regulate the output current while the 2-bit A/D converter is used to measure the battery’s voltage and temperature. The four voltage-source outputs can be used to drive internal battery charge/discharge control circuits and to monitor external batteries.

The AP9211S-DD-HAC-7 has programmable charge current, discharging current, low-battery detect voltage, charging time limit and discharging time limit. These parameters can be adjusted to meet the specific requirements of the application. Additionally, the device provides a protection circuit to protect the system and battery against over-current, over-voltage, over-temperature and other hazards.

The AP9211S-DD-HAC-7 integrates all the components required for a comprehensive battery monitoring and protection solution into a single, compact device. The device is simple to use, and provides robust protection and management for a wide range of portable device applications.

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