LT8391A

FEATURES nn 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT nn Up to 95% Efficiency at 2MHz nn Proprietary Peak-Buck Peak-Boost Current Mode nn Wide VIN Range: 4V to 60V nn Wide VOUT Range: 0V to 60V (51V LED) nn ±3% LED Current Accuracy nn 2000:1 External and 128:1 Internal PWM Dimming nn High Side PMOS PWM Switch Driver nn No Top MOSFET Refresh Noise in Buck or Boost nn Adjustable and Synchronizable: 600kHz to 2MHz nn Flicker-Free Spread Spectrum for Low EMI nn Open and Short LED Protection with Fault Reporting nn Available in 28-Lead TSSOP with Exposed Pad and 28-Lead QFN (4mm × 5mm) APPLICATIONS nn Automotive Head Lamps/Running Lamps nn High Frequency LED Lighting LT8391A 60V 2MHz Synchronous 4-Switch Buck-Boost LED Driver Controller DESCRIPTION The LT®8391A is a synchronous 4-switch buck-boost LED controller that regulates LED current from input voltage above, below, or equal to the output voltage. The proprietary peak-buck peak-boost current mod...