STMicroelectronics (ST), a global semiconductor company supporting various electronic applications and customers, is stepping up to support next-generation automotive lighting with a CAN FD lighting-based multi-pixel driver.

ST announced on the 24th that it has released the L99LDLH32 linear current regulator driver, a convenient integrated solution for dynamically controlling automotive lighting with the lightweight CAN FD lighting protocol.

This new driver is ideal for use with OLED lamps that provide bright, uniform, high-contrast lighting on a small surface area, allowing designers to create complex lighting patterns and effects to enhance safety and style.

The L99LDLH32 features 32 independently programmable regulation current sources ranging from 1mA to 15mA, enabling individual driving of pixels in external and internal lighting applications. It also provides global dimming with 8-bit resolution. Powered by the vehicle's battery voltage, this driver delivers a maximum output of 35V, covering a wide emitter forward voltage range.

The built-in CAN FD lighting protocol handler and transceiver simplify connection with the vehicle's communication infrastructure and control domain ECU (Electronic Control Unit). Synchronized Commander/Responder communication for CAN FD lighting is designed to control simple devices such as lights and sensors based on proven industry standards, and reduces the cost of expensive external components like timing crystals.

In addition, the designer can generate complex animated lighting patterns with a data bandwidth of 1 Mbit/s and smoothly handle modulation transitions and dimming.

In addition, using on-chip memory cells allows for independent operation by programming parameters such as current levels and PWM dimming, and provides a failsafe mode that covers malfunctions of the communication bus or controller.

The L99LDLH32 provides various features for a high level of functional safety, targeting lighting functions essential to safety, such as taillights, brake lights, and turn signals.

This includes fault status pins, voltage and temperature monitors, programmable timeout watchdogs, and short and open load detection functions. Electromagnetic emissions are also minimized through frequency dithering.

The L99LDLH32 is monolithically integrated using ST’s BCD9sL process technology, is ready for sale on the ST eStore, and is AEC-Q100 certified. It is available in a 7 mm x 7 mm QFN48 package featuring an exposed thermal pad and a wettable flank for heat dissipation. For pricing options and sample requests, please contact ST Korea.