BCT3220ELA-TR

BCT3220 4 Channel LED Driver (Common-Anode & Common-Cathode) Low Dropout Current Source & Current Sink General Description Features The BCT3220 is a high performance white LED driver. The BCT3220 uses an internal resistor to set the bias current for four LEDs, which are matched to +/-1.5%. The BCT3220's advantages over ballast resistors include much lower bias variation with supply voltage variation, significantly lower dropout voltage, and in some applications, significantly improved efficiency. The BCT3220 requires only a 50mV dropout voltage at a 20mA load on each output to match the LED brightness. ♦ Drive Common Anode or Common Cathode LEDs ♦ Low 50mV Dropout at 20mA ♦ 20mA full scale current ♦