STMicroelectronics Leads Drive to Better LED Signage for High-Resolution Viewing

STMicroelectronics, a developer of semiconductors for LED lighting, has announced a new series of highly accurate LED drivers with automatic power saving, enabling electronic signage such as road signs, advertising, stadium displays, battery or solar-powered signs and similar equipment to deliver better, high-resolution viewing by ensuring consistent brightness across the viewing area.



The brightness of an LED is closely related to the drive current, usually supplied by a separate driver chip. To provide the enhanced current control designers need, ST has introduced a family of driver chips capable of supplying 16 LED channels with driving capabilities of 3mA to 40mA and bit-to-bit accuracy within +/-1%. This accuracy is superior in tolerance to alternative drivers providing comparable drive current. ST's new devices also provide excellent current matching from chip to chip (+/-2%) to further enhance visual performance.

The new LED drivers are the STP16CPP05, STP16CPPS05, STP16DPP05 and STP16DPPS05. In addition to their enhanced current accuracy, they also provide optional features including ST-patented automatic power saving, as well as built-in LED error detection. Available variants allow designers to specify either or both of these value-added features, in a choice of four industry-standard package options.

The patented automatic power saving allows the drivers to turn off independently when no LED drive data is provided. This function delivers two benefits: software design is simplified as no power-save algorithm is required; and power savings are increased as the drivers turn off more quickly than is generally possible under software control.

Disclaimers of Warranties
1. The website does not warrant the following:
1.1 The services from the website meets your requirement;
1.2 The accuracy, completeness, or timeliness of the service;
1.3 The accuracy, reliability of conclusions drawn from using the service;
1.4 The accuracy, completeness, or timeliness, or security of any information that you download from the website
2. The services provided by the website is intended for your reference only. The website shall be not be responsible for investment decisions, damages, or other losses resulting from use of the website or the information contained therein<
Proprietary Rights
You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner.

Figure 1. Overall concept of face-fit surface-lighting micro-LEDs (FSLED) mask. a. Optical image of the FSLED mask showing uniform surface-lighting. schematic illustration of the FSLED mask. The 2D to 3D transformation procedure b. Difference ... READ MORE

The next generation of high-performance LEDs is now available: the OSCONIQ® C 3030 from ams OSRAM. Engineered for demanding outdoor and stadium lighting applications, this cutting-edge LED series combines exceptional intensity with thermal... READ MORE