Fixed 2.5 V rail for legacy industrial and automotive designs
The LM2937IMP-2.5 is a fixed-output low-dropout regulator from Texas Instruments, delivering a regulated 2.5 V from an input up to 26 V. It is a single positive regulator rated for 400 mA continuous output, with a maximum dropout of 1 V at 50 mA load. The 2 mA quiescent current keeps the idle draw low for always-on rails.
Protection features reduce external component count
Built-in protection against over-temperature, reverse polarity, and short circuit means this regulator can survive a miswired supply or a brief output fault without external clamp diodes or crowbar circuits. For a 24 V industrial control board, the 26 V input maximum provides headroom for a nominal 24 V rail with transients.
SOT-223-4 footprint and thermal considerations
Housed in the SOT-223-4 surface-mount package, the part is compatible with standard SOT-223 land patterns.