Allegro LED Drivers Adds New Features in ADAS Safety
Allegro MicroSystems has broadened its automotive lighting portfolio to include two new LED Drivers offerings for advanced driver assistance system (ADAS) applications.
A unique solution in the market, the A80803 leverages multi-topology conversion and patented IP to enable smooth high/low/high beam transitions in a single integrated circuit (IC).
“Today’s high-end and luxury cars have comfort and safety features that take years to make their way into less-expensive mainstream vehicles, mostly due to solution costs,” said Mark Gaboriault, Product Line Director for Regulators and Lighting at Allegro. “The A80803 gives headlight designers a compact, cost-effective solution that automatically manages the electrical transition from low to high beam, without the need for multiple LED drivers and local microcontrollers. It’s a unique offering that will help democratize headlight design and help increase driver safety. Today’s consumer also expects an engaging, personalized driving experience. With the A80804, lighting designers now have a cost-effective way to enable animations and other lighting effects in a way that simplifies the design process while enhancing visibility and driver safety, as well as minimizing bills of materials.”
The A80804 linear LED driver provides high power for automotive lighting applications through multiple, independently-configurable channels.
Both products help designers reduce the number of ICs required to create safety-enhanced automotive lighting systems, enabling higher performance and more compact designs at lower system costs.
The A80803 is a switch-mode, constant-current controller for high-power LED automotive lighting applications that address many common pain points for headlight designers, with innovative features that make it easier for headlight designers to bring advanced functionality to mainstream vehicles.
The A80804 is Allegro’s first four-channel linear driver for high-power LEDs. In addition to targeted applications such as DRL/position and stop/tail lights, it gives lighting designers increased design flexibility for popular features such as sequential turn signals, animation effects, and theater-style transitions.
No switching elements or inductors are required, and the A80804’s low EMI output helps it achieve CISPR25 Class 5 compliance. It also offers multiple analog and PWM dimming methods, dual brightness mode operation, and is configurable without the need for a microcontroller.
