An Introduction
This solution selects Microchip's automotive grade MCU PIC12F1572-E/SNVAO, and outputs three PWMs to control the RGB LED color change of OSRAM. It can combine 16777216 colors.
Microchip's ATA663231-GBQW LIN transceiver integrates a 3.3V LDO with a maximum load current of 85mA and can directly power the MCU. LRTB GVSG is an OSRAM automotive grade RGB LED that is widely used in automotive ambient lighting, decorative lighting applications, etc. The host LIN bus sends a color setting command to the ambient light, thereby changing the color of the ambient light to create a comfortable atmosphere for the interior of the car. It can also be used for other colored lights with decorative applications.
Program features
Automotive MCUs with UART and PWM modules for LIN communication and PWM color mixing, optional DFN8 package, small size; Integrated LDO-connected LIN transceivers, DFN8 package is only 3x3mm, no need to add LDO, reduce the size, It is more suitable for ambient light, which requires small size applications. It can be used to configure the MCU driver through the MCC plug-in of MPLAB X IDE, and automatically generate software engineering, which is easy to develop and supports online simulation. Transistor constant current drive mode, low cost.
Solution application
car RGB color atmosphere lights; color decorative lights; dashboard indicator; battery status information display.