SPX3819M5-L-3-3/TR

SPX3819M5-L-3-3/TR is a MaxLinear fixed 3.3 V low-dropout linear regulator in a SOT-23-5 package, delivering 500 mA from inputs of 2.5 V to 16 V with 340 mV dropout and low 40 µVrms output noise — a clean 3.3 V rail for RF and mixed-signal loads fed from wide or noisy industrial inputs. Status, stated precisely because this family attracts confusion: the part is current on MaxLinear's own product page, and the PDN-25008 notice sometimes cited against the family is in fact the SP6205's discontinuation notice, which names the SPX3819 as the recommended alternate — it is not a discontinuation of this part. Selection advice: the 16 V input ceiling is the differentiator against 5 V-class LDOs — it lets one 3.3 V rail serve boards whose input is a 12 V industrial bus; the 40 µVrms noise is the figure to compare when the rail feeds an ADC reference or a PLL. The M5-L-3-3 code is the fixed 3.3 V version and /TR its tape-and-reel form; other-voltage SPX3819 codes are different orderables. Parameters verified against MaxLinear documentation.