Ambient Light sensor is photo detector used to detect light present in immediate surroundings. These sensors imitate how human eye’s respond to light intensity under variety of lighting conditions. Hence, it is used as backlight control in various LCD display control applications from automotive to consumer electronics. It allow automatically control backlight to offer optimum viewing experience in diverse lighting conditions. Ambient light sensors can detect broad range of ambient light, from bright sunlight to very low light that is 400 nm to 700 nm. Apart from improving visibility, ambient light sensors are helpful to reduce power consumptions further improve battery performances. Moreover ambient light sensor’s advantages such as flexibility for industrial design, small form factor, energy efficient solutions, and compactness is making it ideal for various applications in automotive, smart homes, Iot hubs, security lighting, medical devices, robotics, ...