Custom-developed for automotive interior LED ambient light strips and compatible with 12V vehicle power supply system, this PCBA integrates constant-current drive, intelligent dimming, multi-mode control, CAN / Bluetooth wireless control and automotive-grade power protection circuits. Built with AEC-Q automotive-grade components, the PCB fits flexible long strip lamps installed on car doors, center console, footwell and dashboard. It realizes dynamic full-color RGB/RGBW lighting, supports automatic mass SMT assembly and complies with rigorous in-vehicle working conditions.

I. Solution Overview

Identical to the opening description above: tailor-made for automotive interior LED ambient strips, 12V vehicle power compatible, integrated constant-current driver, intelligent dimming, multi-mode regulation, CAN/Bluetooth wireless control and multi-layer automotive power protection circuits. Automotive-grade components enable RGB/RGBW dynamic color output for long flexible light strips; automatic SMT mass production is available to withstand harsh vehicle environment.

II. Core Hardware Functions

1. Automotive-grade LED Driver ModuleDesigned for vehicle 12V constant power supply with flicker-free constant-current driving circuit, compatible with RGB, RGBW and dual-CCT LEDs. Stable output current ensures uniform brightness and eliminates flickering caused by voltage fluctuation and driving electrical interference.
2. Intelligent Control & Interaction ModuleEquipped with dedicated low-power automotive MCU, supporting physical button, infrared remote, mobile APP via Bluetooth and voice control. Pre-programmed lighting effects include breath fade, running water chasing, music sync rhythm, strobe and zonal color shifting; users can customize brightness, color and running speed. Special vehicle logic such as welcome light upon door opening and delay-off after engine shutdown is available.
3. Multi-protection Vehicle Power SystemBuilt-in multi-protection against overvoltage, undervoltage, reverse polarity, overcurrent, short circuit, surge and ESD static discharge to cope with engine cranking voltage swing, ignition EMI and extreme temperature. Power-off memory function automatically restores previous lighting mode after power reboot.
4. Signal Expansion ModuleOptional CAN bus connection to original vehicle ECU for linkage with door signal, turn signal and brake lamp; cascade connection and independent zonal control for multiple light strips are supported. Reserved audio trigger interface enables auto color change synchronized with music beats.
5. Structure-Optimized LayoutSlender rigid PCB or flexible FPC design with miniaturized components, anti-bending and anti-vibration performance for narrow hidden interior installation, excellent high-temperature and moisture resistance.

III. Key Advantages

• Automotive-grade Reliability: Wide-temperature-range components with strong anti-EMI performance, stable operation without flicker or crash under vehicle vibration, drastic temperature difference and unstable power supply.
• Excellent OEM Compatibility: Universal 12V design fits most vehicle models, plug-and-play non-destructive wiring and original car host linkage to meet mainstream aftermarket refitting demands.
• Flexible Intelligent Customization: Lighting modes, linkage logic and APP functions can be developed on demand; expandable features include music rhythm, scene preset and timing switch.
• Cost-effective Mass Production: Standardized SMT layout with commonly used components guarantees high automated production yield for large-volume aftermarket orders.

IV. Application Scenarios

Widely applied to four-door ambient lights, console dashboard lamps, footwell lights, storage box lights, seat back lights, trunk decorative lights and sequential turn signal modification for automotive interior refitting.