《BL9590_6通道_升压恒流_LED驱动资料》.pdf

BL9590 Six-String White LED Driver with Active Current Balancing for LCD panel Applications FEATURES liquid-crystal displays (LCDs) that employ an array of LEDs as the light source. A current-mode step-up • Drives Six Parallel Strings with Multiple Series- controller drives up to six parallel strings of multiple Connected LEDs per String series-connected LEDs. Each string is terminated • ±1.5% Current Regulation Accuracy Between with ballast that achieves ±1.5% current regulation Strings accuracy, ensuring even brightness for all LEDs. The BL9590 has a wide input-voltage range from • Low 450mV Feedback Voltage at Full Current 4.5V to 26V, and provides a fixed 20mA or Improves Efficiency adjustable 15mA to 25mA full-scale LED current. • Step-Up Controller Regulates the Output Just The BL9590 has two dimming control modes to Above the Highest LED String Voltage enable a wide variety of applications. In direct • Full-Scale LED Current Adjustable from 15mA