The AL8866QSP-13 from Diodes Incorporated is a DC-switching LED Controller. It requires an input voltage of 4.7-85 V. This LED driver is a buck-boost, boost, buck and SEPIC (single-ended primary-inductance converter) LED Controller that is designed to drive an external MOSFET for high-power automotive LED applications. It utilizes a fixed-frequency, peak current-mode control architecture to incorporate a spread spectrum frequency modulation technique and achieve low EMI performance. It modulates LED current with analog or PWM dimming techniques. This AEC-Q100-qualified LED driver integrates a soft-start function, limiting the current through the inductor and external power switch during initialization start-up. It includes fault status indicators for protection.
This RoHS-compliant LED driver benefits from output overvoltage protection, LED open circuit protection, output undervoltage protection, LED short circuit protection, cycle-by-cycle overcurrent limitation protection, sense resistor shorted circuit protection, diode/inductor shorted circuit protection, diode open circuit protection and thermal shutdown features. It is available in an enhanced thermal surface-mount package that measures 4.95 x 3.90 x 1.5 mm and is ideal for automotive front lightings, automotive high beams, low beams, automotive daytime running lights, automotive fog lights, turn lights, position lights and other automotive LED lighting applications.
