Texas Instruments ATL431AQDBZR technical specifications, attributes, and parameters. V-Ref Adjustable/Precision 2.5V to 36V 100mA 3-Pin SOT-23 T/R. 2.5-V low-IQ adjustable precision shunt regulator 3-SOT-23 -40 to 125. Three Terminal Voltage Reference, 1 Output, 2.5V, Trim/Adjustable, PDSO3.