AP9101CAK-AMTRG1

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Power Management IC (PMIC) - Battery Management

Power Management IC (PMIC) provides power management functions for the components within an electronic device. In particular, Battery Management ICs offer power management and protection services related to managing and protecting the battery power in electronic devices. One such IC is the AP9101CAK-AMTRG1.

AP9101CAK-AMTRG1 Application Field & Working Principle

The AP9101CAK-AMTRG1 is a battery protection IC that is primarily aimed at applications requiring precise sensing and control of battery voltage, temperature and current. It combines a 4-channel buck converter, 3-channel low dropout regulator and scanning thermistor interface under the same package to provide comprehensive power management functions for consumer products with great safety and system reliability.

The AP9101CAK-AMTRG1 is specially designed to be a battery-protection IC for multi-cell Li-based batteries and other types of battery packs like Li-ion and LiFePO4. All the features are combined into the single 6x6mm package to significantly reduce the PCB space and cost of the application. The AP9101CAK-AMTRG1’s precision sensing and regulation capabilities make it suitable for applications that require reliable battery operation.

The IC provides an integrated battery protection solution for various types of chemistries, including 4S Li-ion/LiFePO4, 6S Li-ion/LiFePO4 and 10S Li-ion/LiFePO4. It can detect abnormal voltage, high/low current, high temperature and other fault conditions in the battery pack, once detected, the IC immediately cuts off the output power to protect the battery pack from damage.

The AP9101CAK-AMTRG1 features a high-side over-voltage monitor (OVM) and drop-monitor (OVD) circuit that monitors the voltage of each cell individually. The OVM and OVD thresholds can be programmed to set the over-voltage, under-voltage and over-discharge levels based on the respective battery chemistries.

The AP9101CAK-AMTRG1 is also equipped with a scanner, a 4-channel switch-mode buck converter and 3-channel low dropout (LDO) regulator. The switch-mode buck converter ensures a constant current or voltage output for charging and discharging the battery. The three LDO regulator channels support up to three separate output voltages from 1.8V to 3.6V.

The Scanner can be used to sense the battery temperature in the device, which will be helpful in protecting the battery from longcharging and discharging times. The device also contains watchdog circuits, which stop the system from running if it’s become unstable. The AP9101CAK-AMTRG1 also comes with separate control pins for charging/discharging control and shutdown.

Conclusion

The AP9101CAK-AMTRG1 is an integrated IC that provides comprehensive power management functions for multiple cell Li-based batteries used in consumer electronic products. It provides reliable battery protection and monitoring by detecting abnormal voltage, high/low current, high temperature and other fault conditions. It also features a 4-channel buck converter, 3-channel low dropout regulator, a thermistor scanner and watchdog functions. All of the features are integrated onto a single 6x6mm package to reduce PCB space and cost, making it an ideal choice for battery protection applications.

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