LP55281RLX/NOPB

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The LP55281RLX/NOPB is a high-efficiency 8-channel LED driver. As a PMIC - LED driver, it is designed with an input voltage range of 4.5V to 5.5V and offers a 1MHz switching frequency for better efficiency. The LP55281RLX/NOPB supports a range of backlight and display applications, including LCD, AMOLED, and TFT backlights as well as keypad and status indicator LEDs. It is capable of driving up to 8 strings of 32 LEDs each in 25mA increments.

This PMIC - LED driver is characterized by high current accuracy and low ripple and noise, making it well suited for applications that require consistent dimming and color-critical applications. Low current consumption and high efficiency also make the LP55281RLX/NOPB an attractive choice for energy-efficient designs. The LP55281RLX/NOPB comes with an internal 3 pulse width modulation (PWM) generator, multilingual LED configuration, 8 internal LED drivers for LED current control, and 8 output drivers for LED outputs.

The LP55281RLX/NOPB operates on an internal feedback loop to adjust the LED current. The internal current setting resistors are calibrated to provide accurate LED current. The internal 3 PWM generator and 8 LED drivers, controlled through the I2C interface, provide output levels ranging from 1 mA to 32 mA for each LED string. The LP55281RLX/NOPB offers LED string support, LED current accuracy, and smooth linear LED dimming. With a reference voltage of 4.2 V, the LED strings can be set as low as 1 mA.

The complex nature of LED current control and the varying LED string lengths that are encountered in LED backlighting applications can be a challenge. The LP55281RLX/NOPB has a multilingual LED configuration feature which allows the user to configure the LED currents on a string-by-string basis and also to set the current level distribution of individual LEDs. This feature makes the LP55281RLX/NOPB a powerful and versatile solution for lighting applications.

The LP55281RLX/NOPB also features programmable failsafe and watchdog timers and includes an onboard power management unit to monitor the input voltage and current of each LED and track the permissible peak current. The LP55281RLX/NOPB also offers protection against short circuit, overvoltage, and overcurrent for safer operation.

The LP55281RLX/NOPB is a multi-channel PMIC - LED driver that is designed for driving LEDs with high efficiency and accuracy. It offers a comprehensive solution for various lighting applications and helps reduce overall design complexity.

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