Jun 8 2010
ON Semiconductor has announced the new linear regulator and controller, namely, NCV7680 that contains eight linear constant current sources, which are programmable. The new product has been designed to regulate and control solid-state rear combination lamps used in vehicles. The controller can support a maximum of 75 mA of LED driving current every channel.
NCV7680 Linear Regulator and Controller
The NCV7680 regulator also supports two different brightness levels because of its high-degree integrated functionality. One of the brightness levels is for tail illumination and another for stop. The controller can be implemented with a pulse width modulation (PWM) control, which is provided as optional. Just one external resistor is enough for configuring the output current. The optional external ballast FET offered with the product enables to distribute power on designs that require high currents.
The new regulator and controller has been qualified under the AEC Q100 automotive standard and has received MSL 1 rating for moisture resistance. The NCV7680 can operate in temperature between -40¢ªC and 150¢ªC. It is suitable for applications in devices such as daytime running lights, array of center high-mounted stop lamps, LCD backlighting, rear combination lamps, turn signal lamps and fog lights.
The SVP of Automotive Power Group at ON Semiconductor, Andy Williams said that now the demand is for feature rich automotive lighting systems, which needs highly integrated solutions to be deployed to get better current regulation. The new product delivers improved performance and high efficiency, while helping to power rear combination lamps in one chip, he noted. The NCV7680 facilitates fault identification and matching of LED outputs better than a discrete solution, Williams added.