Both products can support LED lighting

We're pleased to bring to the market these innovative LED controllers that can significantly reduce the customer bill of material and design time," said Skip Wong, Vice President of Sales at Leadis. "The LED lighting market is starting to take off, with cost and reliability being critical factors that require continued improvement. Our LDS9001 and 9003 provide a straightforward cost reduction path for system lighting designers. Beyond lighting, these products can also be used in high power automotive and signage applications.headquartered in Sunnyvale, California, designs, develops and markets analog and mixed-signal semiconductors that enable and enhance the features and capabilities of portable and consumer electronics devices. Leadis' product offerings include LED drivers, which provide controlled levels of current required to drive light emitting diodes in diverse applications including mobile backlight units, and color display drivers, which are critical components of displays used in mobile consumer electronic devices.

The LDS9001 and 9003 offer one and three temperature sensing and control channels, respectively. Both products can support LED lighting, automotive, and signage applications. Since the LDS9003 supports multi-point thermal monitoring, it can also be used for multi-color LED applications, such as RGB. Eight I2C-programmable registers let users define the temperature de-rating profile as a function of the specific LED Diode used in the design. A 12-bit PWM generator with "smooth" logarithmic control supports the high temperature LED current de-rating adjustments. The PWM generator is programmable via an I2C serial interface. User programmed 8-bit codes are converted to 12-bit resolution logarithmic steps of ~ 0.17 dB per step. The PWM frequency is ~280 Hz to minimize noise generation. Interfaces are provided to support high side high LED current drivers and low cost microcontrollers in order to enable LED lighting designers to quickly and efficiently implement their electronics solution.

In today’s economy, tight profit margins are driving companies to seek technologies that combat rising energy costs and improve productivity with sustainable solutions. The need to reduce carbon emissions is real and lighting’s electricity consumption accounts for over 400 million tons of CO2 in the US atmosphere each year. LED lighting can be a big part of the answer to reducing energy and carbon emissions if done correctly.Albeo’s white paper examines critical differences in conversion technologies that determine performance, and lifetime.