the LED current for best luminosity

It not only can maximize light output and distribution, but can prevente harmful glare and reflections, the company says this ring light can be used for a wide variety of inspection, assembly, and rework applications. Its pure-white LED light makes it well-suited for inspecting circuit boards, surface cracks and defects, welds, solder joints, flux residues, and hairline stress cracks.It employs 80 high-output led high bay light that draw only 18 W of energy and produce up to 5800 footcandles of illuminance at a working distance of 4.5”. The LEDs are distributed among two concentric rings of lights, each containing 40 LEDs, and are controlled using eight quadrant switches. A color temperature of 6000 K, combined with dimming to 15% output, enables the ring light to be used with digital equipment, such as Luxo’s System 373 trinocular microscopes. What’s more, the ring light’s lamp life of 50,000 hours makes it an energy-efficient replacement for conventional 150-W fiber-optic illuminators.

 The former monitors the in-situ temperature on each LED and independently optimizes the LED current for best luminosity vs. temperature performance. The latter ensures a low drop out voltage on each LED channel of typically 25mV across the full operating current range. To minimize standby current, the LDS8160 also features an additional low-power standby mode, where the supply voltage of the device is switched to 1.8V. The LDS8160 is controlled through a high-speed I2C interface. Targeted at mobile backlighting applications, the LDS8160 supports up to six white LEDs or up to two RGB LEDs, with a maximum current of 25mA per channel.

Mobile phones have evolved from voice-centric devices to multi-media platforms. Users now expect excellent outdoor display readability, which is a challenge given the current required to drive the led high bay light unit to satisfactory display contrast and color saturation. One solution to this problem is to utilize RGB diodes in the backlight unit. These diodes require temperature compensation in order to keep their white color coordinates constant, a problem that the LDS8160 is designed to solve.