AL58818Q

AL58818Q is a Diodes Incorporated 18-channel linear LED driver in a W-QFN5050-40 package — for automotive matrix and animated lighting, where each of its 18 channels sources up to 70 mA with 12-bit PWM dimming at 30 kHz for flicker-free, camera-friendly light control. It runs from a 2.7 V to 5.5 V supply, is configured over I2C or SPI, and is AEC-Q100 Grade 1 qualified with PPAP capability. The orderable code is AL58818QFRZW40-13 — the base name identifies the device, while the full suffix defines the wettable-flank WQFN-40 package and reel packing. Selection advice: pick the 18-channel code when the lamp design needs the channel count for segmented or sweeping indicators; the AL58812Q on this site is the same platform at 12 channels for smaller clusters, and the AL5958Q extends the family to 48 channels with scanning for matrix headlamps. Design the LED string voltage from the external rail — this IC is the current regulator, not the boost stage — and budget the diagnostics and fault reporting in firmware. Parameters verified against Diodes Incorporated documentation.