STMicroelectronics oferece driver multi-pixel com CAN FD Light para iluminação de veículos

STMicroelectronics offers multi-pixel driver with CAN FD Light for vehicle lighting

The L99LDLH32 linear current regulator from STMicroelectronics offers a convenient, integrated solution for dynamic automotive lighting controlled using the CAN FD Light lightweight protocol. Ideal for use with OLED lamps that provide bright, homogeneous, high-contrast lighting over a small surface area, the new driver allows designers to produce complex light patterns and effects that improve safety and style.

With 32 regulated current sources, independently programmable from 1mA to 15mA, the L99LDLH32 can drive individual pixels in outdoor and indoor lighting applications. Global dimming is also provided, with 8-bit resolution. While powered by vehicle battery voltage, the driver produces outputs of up to 35 V to cover a wide forward voltage spread from the emitter.

The integrated CAN FD Light protocol manipulator and transceiver simplify connection to the vehicle's communications infrastructure and control the domain ECU (electronic control unit).

Based on proven industry standards, CAN FD Light's synchronized commander/responder communication, designed to control simple devices such as lights and sensors, saves expensive external components such as timing crystals. On the other hand, 1 Mbit/s data bandwidth allows designers to create complex animated light patterns and allows for smoothly modulated transitions and dimming.

Additionally, on-chip memory cells allow programming of parameters such as current level and PWM dimming for stand-alone operation, to provide a fail-safe mode to cover communication bus or controller malfunctions.

Targeting functions that include safety-critical lighting such as tail lights, traffic lights and turn signals, the L99LDLH32 offers features for a high level of functional safety. These include a fault status pin, voltage and temperature monitors, a programmable timeout watchdog, and short circuit and open load detection. Additionally, frequency dithering minimizes electromagnetic emissions.

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