LX27902IDW

LX27902IDW is an LED driver IC that belongs to the family of PMIC (Power Management IC) designed and developed by ON Semiconductor. It was designed to provide efficient and controllable LED dimming with improved driver efficiency and power savings. The device produces dual stage dimming by means of PWM, Constant Voltage Dimming (CVD) and I2C interface communication. It also supports an active current-limit protection feature.

The major application field of LX27902IDW includes consumer electronics, automotive and cellular phones. In consumer electronics, it finds application in display backlight, optical backlight and solar cell applications. In automotive systems, it is used in headlamp and brake light applications due to its ability to vary the voltage and current supplied to the LEDs. In cellular phones, it is used to control the intensity of the display and keypad illumination.

The working principle of LX27902IDW is based on the use of PWM, Constant Voltage Dimming (CVD) and I2C interface communication. The device enables dual stage dimming (pulse width modulation and constant voltage dimming) to control LED current and brightness. It allows the designer to control LED current and brightness as per their requirements. It also offers active current limit protection to ensure the safety of the LED devices. The device also supports an external clock frequency for higher flexibility.

In summary, LX27902IDW is a PMIC (Power Management IC) LED driver IC from ON Semiconductor. This device is used in consumer electronics, automotive and cellular phone industries for LED control and dimming purposes. It provides dual stage dimming (pulse width modulation and constant voltage dimming) and also offers active current limit protection. It supports an external clock frequency for higher flexibility and is a reliable and efficient LED control device.