ALT80802

ALT80802 Wide Input Voltage, Adjustable Frequency, Buck-Boost or Buck 2 Amp LED Driver FEATURES AND BENEFITS Automotive AEC-Q100 qualified Supports buck-boost or buck mode operation Supply voltage from 3.8 to 50 V in buck mode ▫ Handles automotive load dump and cold crank ▫ Also supports buck mode from a pre-boost supply Supports up to 16 V output in buck-boost mode for 4 WLEDs 150 mΩ integrated MOSFET switch Programmable switching frequency up to 2.5 MHz for small solution size and operation above AM band Designed for low EMC with frequency dithering Integrated level shifting allows ground-referenced enable and fault flag in buck-boost mode PWM dimming via direct logic input or power supply voltage Robust protection against: ▫ Adjacent pin-to-pin short ▫ Pin-to-VSS (IC ground) short ▫ Component open/short faults APPLICATIONS Automotive lighting Daytime running lights Front and rear fog lights Turn/stop lights Map light Dimmable interior lights PACKAGE: 10-Pin DFN with Exposed Thermal Pad and Wettable Flank (suffix EJ) Not to scale DESCRIPTION The ALT80802 is a high-frequency switching regulator that provides constant output current to drive high-power LEDs. It integrates a power MOSFET for step-down or inverting buckboost conversion. With current-mode control and simple external compensation, theALT80802 can achieve fast transient response. The wide input range of 3.8 to 50 V makes the ALT80802 suitable for a wide range of lighting applic...