MAX8821ETI+T

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As power management integrated circuit (PMIC) technology is advancing, the MAX8821ETI+T family of PMICs is an ideal solution for LED drivers. The MAX8821ETI+T PMIC-LED driver is small but powerful, providing step-down and step-up driver support as well as other features to improve the performance of multiple-LED applications. MAX8821ETI+T also supports dimmable operation. This article will look at the applications and working principles of the MAX8821ETI+T PMIC-LED driver.

Applications of MAX8821ETI+T

The MAX8821ETI+T PMIC-LED driver is specifically designed for lighting applications, such as LED lamps, flashlights, and more. The PMIC-LED also provides various features for LED illumination, such as voltage booster, brightness control, temperature monitoring and protection, and overcurrent protection. It also offers enhanced flexibility when it comes to LED operation, allowing for dimming control, multiple output current settings, and adjustable PWM period control. With the MAX8821ETI+T, users can easily implement multiple-LED illumination solutions in a smaller form factor solution with improved system efficiency.

MAX8821ETI+T Working Principle

The MAX8821ETI+T PMIC-LED driver works by integrating an analog step-down regulator, a charge-pump voltage booster, and a linear current regulator. The analog step-down regulator allows for operation from either a single voltage or dual input voltage sources. It can safely provide a regulated output voltage from a wide input range. The charge-pump voltage booster is a high-voltage, low-power charge-pump circuit which enables operation from a single voltage input source. With a maximum operating voltage of 60V, it allows for control of up to four LEDs in series.

The MAX8821ETI+T PMIC-LED driver also includes a linear current regulator which allows for adjustable LED current. The LED current can be adjusted through the use of external resistors. This is important for many applications, as the LED current needs to be controlled in order to achieve the desired output brightness.

Furthermore, the MAX8821ETI+T also includes other features to enable robust LED operation. It includes a temperature monitor and protector circuit which provides overtemperature protection, as well as a temperature-compensated current limiter with adjustable overcurrent protection. This ensures safe and reliable operation of the LED driver even in harsh conditions. The PMIC-LED driver also supports PWM dimming control, allowing for dynamic LED brightness adjustment.

Conclusion

The MAX8821ETI+T PMIC-LED driver is a powerful and versatile LED driver for lighting applications. It is small and efficient, providing features such as voltage booster, adjustable LED current, temperature monitoring and protection, and overcurrent protection. It also supports dimming control, allowing users to adjust the LED output brightness as needed. The MAX8821ETI+T is an ideal solution for multiple-LED illumination solutions.

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