LC5222D

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The LC5222D is a PMIC (Power Management IC) LED Driver. It sports a wide range of features, including an input voltage from a nominal 3.2V to 4.2V, adjustable current to 200mA, and a maximum LED string length of 18 series LED units. The LED driver operates in a PWM (Pulse Width Modulation) mode and uses a pulse or PFM (Pulse Frequency Modulation) mode.The LC5222D has an internal operating temperature range of -40°C to 85°C, along with a maximum die temperature limit of 125°C. This broad range of operational temperature makes it an ideal choice for powering LEDs in extreme ambient temperatures. Additionally, it utilizes a power tracking algorithm to optimize efficiency and compensate for varying input voltage.The LC5222D is designed to provide full dimming control and power management features. It features short circuit and over-temperature protection, as well as a PWM frequency range of 300kHz to 900kHz. The driver utilizes a smart dimming control system with an integrated advanced digital dimming algorithm to provide precise brightness and color control. This algorithm also offers soft-start functionality and a reference output current, enabling it to recognize and apply the correct LED driver current under different conditions.The LC5222D also features protection against overtemperature protection. When this occurs, the driver will shut down to protect the LED from potential damage. This feature helps makes the LED driver extremely reliable and efficient, minimizing LED degradation and extending LED life.The LC5222D offers three distinct operation modes. The normal mode uses the integrated PWM/PFM power algorithm for efficient power management. The power saving mode reduces the duty cycle of the output current when the load current falls below a certain threshold. The low power mode implements a duty cycle control with a low-end frequency of 10kHz, thus providing a further reduction in power consumption.In addition to its high efficiency, reliability, and protection features, the LC5222D comes with an extremely detailed support package, including application note, evaluation kits, and design tools. This package is designed to assist in the implementation and testing of LEDs with the LC5222D LED driver. As a result, designers and engineers can quickly and reliably make design decisions and reduce design time.Overall, the LC5222D is a powerful and reliable PMIC LED driver with a comprehensive feature set. It offers an adjustable output current of up to 200mA, wide operational temperature range, three distinct operating modes, and built-in protection features. Coupled with an extensive support package, this makes the LC5222D an ideal choice for applications in extreme environments where reliability is of utmost importance.

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