Datasheet Allegro ALT80802 — Даташит

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
▫▫ Handles automotive load dump and cold crank
▫▫ Can be run in buck mode from a pre-boost supply
• 150 mΩ integrated MOSFET switch
• Supports up to 16 V output in buck-boost mode for
4 WLEDs
• 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
• Turn/stop lights …