L78L05ABUTR

L78L05ABUTR is the tape-and-reel SOT-89 ordering code for the STMicroelectronics L78L05 5 V linear regulator, listed as Active with the SOT-89 package and Industrial grade in the quality table of the maker’s L78L product page. The AB in the code is the accuracy selection: the A grade holds ±4 % where the C grade allows ±8 %. Read on the AB rows: output of 4.8 V minimum, 5.0 V typical and 5.2 V maximum at 25 °C, held between 4.75 V and 5.25 V on the table’s wider condition rows — IO of 1 mA to 40 mA at VI of 7 V to 20 V, or IO of 1 mA to 70 mA at VI of 10 V — bias current of 6 mA maximum, and a dropout voltage of 2 V typical in the current datasheet revision (DS0424 Rev 30) - a lower dropout figure in circulation belongs to a superseded revision and is not used here. Output current is up to 100 mA, with internal current limiting and thermal shutdown. The selection point is a small, self-protected 5 V rail for a sensor, a logic island or a standby supply, in a tab package that can shed a little heat. Selection advice: at this current class the dropout and the dissipation are the design - confirm the input keeps headroom above the 2 V typical dropout at worst-case line and load before relying on the tab alone. Parameters verified against the ST L78L datasheet (DS0424 Rev 30, Table 13, AB-grade rows) and the quality table of the maker’s product page.