T6316A

The T6316A/B low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs. The T6316A uses a single resistor to set the bias current for four LEDs, which are matched to 3%. The T6316B build in internal resistor to set the bias current for four LED. The T6316A/B advantages over ballast resistors include significantly better LED to LED bias matching,much lower bias variation with supply voltage variation, significantly lower dropout voltage,and in some applications, significantly improved efficiency. The T6316A/B is available in SOP-8 package and lead-free.