AS1122-BQFM Integrated Circuits (ICs)

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PMIC-LED drivers are a type of integrated circuit (IC) specifically designed to control the current and voltage of LED displays. As the name suggests, the drivers help to manage the power consumption of LED displays with various features, giving system manufacturers more control over the energy consumption of their LED displays. In this article, we will explore the application fields and working principle of the AS1122-BQFM PMIC-LED driver.

Application fields of the AS1122-BQFM PMIC-LED driver

The AS1122-BQFM PMIC-LED driver is a highly integrated PMIC-LED controller with high level of integration for the regulation, management and protection of the LED. It contains advanced features that allow for easy connection, high current capability and monitoring of the LED displays. It is primarily used in applications such as flat-panel displays, portable computers, projectors and automotive multimedia systems.

The AS1122-BQFM PMIC-LED driver consists of an analog block built around a low noise linear regulator and a digital control block. This allows for high level control of the power supply to the LED display, ensuring that the current and voltage remain consistent, leading to more efficient power usage. The driver also features a programmable SoftStart feature which gradually increases the brightness of the display after startup, resulting in smoother transitions and less stress on the backplane.

The driver also features a comprehensive input protection system, which protects against over-voltage, over-current and short-circuit conditions. Additionally, the driver can be cascaded with other PMIC-LED drivers, allowing for true dimming control of the LED display. Further, the driver also features protection against inductive and capacitive currents, making it ideal for use in inductive and capacitive loads.

Working principle of the AS1122-BQFM PMIC-LED driver

The AS1122-BQFM PMIC-LED driver works by combining an analog block with a digital control block. The analog block contains a low noise linear regulator which is used to maintain a consistent output voltage and current, while the digital control block enables monitoring and control of the LED display. The linear regulator uses pulse width modulation (PWM) to control the current and voltage output, while the digital control block provides high level monitoring and control of the LED display.

The driver is also equipped with built-in safety features such as overvoltage, overcurrent and short-circuit protection, as well as protection against inductive and capacitive currents. This allows for safe and efficient operation of the LED display, reducing the potential for damages to the display, as well as to the driver itself. The digital control block also allows for dimming, on/off switching, and programmable SoftStart, which gradually increases the brightness of the display after startup.

Finally, the AS1122-BQFM PMIC-LED driver can be easily cascaded with other PMIC-LED drivers, providing further control and monitoring of the LED display. This allows system designers to have more efficient and accurate control over the power consumption of their LED displays, reducing power waste and ensuring maximum efficiency.

Conclusion

The AS1122-BQFM PMIC-LED driver is a highly efficient and integrated controller designed to effectively manage the power consumption of LED displays. Its advanced features such as built-in protection, dimming control, cascading capability and programmable SoftStart ensure that the LED display remains safe and efficient for the lifetime of the system. Therefore, the AS1122-BQFM PMIC-LED driver is an ideal choice for flat-panel displays, portable computers, projectors and automotive multimedia systems.

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