T6316A

tm TE CH Preliminary T6316A/B Low-Dropout, Constant-Current White LED Bias Supply FEATURES Up to 400mA LED Bias Current 3% LED Current Matching Simple LED Brightness Control www.DataSheet4U.com Low 0.05uA Shutdown Current 2.7V to 5V Supply Voltage Range SOP-8 Package and Lead-free VSET Resistor Option : T6316A : External Resistor T6316B : 20, 85, 100, 125, 150, 175, 200, 250, 300 and 350mA Output Current Option by Internal Resistor Build in Thermat Protect 160 °C GENERAL DESCRIPTION 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. Applications Portable Communication Devices Handheld Electronics LED/Display Back Light Driver Lightings PART NUMBER EXAMPLES PART NO. T6316A-D T6316A-DG T6316B-20D T6316B-20DG T6316B-75D T6316B-75DG PACKAGE SOP-8 SOP-8 lead-free SOP-8 SOP-8 lead-free SOP-8 SOP-8 lead-free Vset Output Current resistor External 20mA 20mA 75mA 75mA E...