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I2C/SPI Programmable 18-/12-Channel Linear LED Drivers from Diodes Incorporated Simplify Dynamic Automotive Lighting Applications with Digital Color Mixing
PLANO, Texas--(BUSINESS WIRE)-- Diodes Incorporated (Diodes) (Nasdaq: DIOD) today introduces the AL58818Q and AL58812Q, a new series of automotive-compliant*
About this update from Diodes Incorporated
[{"type":"text","content":" PLANO, Texas--(BUSINESS WIRE)--\nDiodes Incorporated (Diodes) (Nasdaq: DIOD) today introduces the AL58818Q and AL58812Q, a new series of automotive-compliant* 18- and 12-channel linear LED drivers designed to provide precise color mixing and brightness control. These devices are ideal for automotive rear lamp modules, grille and emblem lights, and interior ambient lighting. Beyond lighting, other applications include infotainment displays, automotive status indicator lights, touch panels, and LCDs.\n\n\nThe AL58818Q and AL58812Q are designed to simplify the creation of complex and animated LED lighting modules, enabling vivid lighting effects with zero audible noise. Each channel features an internal 12-bit pulse width modulation (PWM) generator operating at 30kHz for fine-tuned color mixing and brightness control. System designers can select between I2C or SPI digital interfaces through a hardware-selectable pin, providing enhanced programming flexibility.\n\n\nThe AL58818Q has 18 channels, making it ideal for up to six RGB LED lighting modules or 18 single-color LEDs, while the AL58812Q provides 12 channels for up to four RGB LED modules. Each channel delivers up to 70mA of current set by the external resistor. The maximum global 6-bit output current for all channels is adjustable through registers. Each channel also has an internal 30kHz, 12-bit PWM generator for smooth dimming regardless of programming registers through the digital interface (I2C or SPI).\n\n\nThe devices feature independent color-mixing registers and brightness control registers per RGB LED module, enabling over 16 million (256 x 256 x 256) color combinations. They support both logarithmic and linear-scale brightness control for human-eye-friendly visual performance, with a default 12-bit PWM resolution achieved through 9 bits of pure PWM and 3 bits of dithering digital control. The 3-bit dithering scheme enhances PWM resolution to 0.0244%. Furthermore, deep dimming is supported, where the internal circuitry converts the PWM signal to analog dimming when the duty cycle falls below 3%, maintaining overall linearity.\n\n\nBoth devices boast an accurate 3% device-to-device and channel-to-channel current matching, which ensures precise color mixing and uniform color distribution across various lighting modules and displays. An internal 16MHz oscillator elimina...