3 A adjustable buck with 60 V input headroom
The LM2576HVT-ADJ is a SIMPLE SWITCHER® step-down (buck) regulator from Texas Instruments, delivering up to 3 A to an adjustable output from 1.23 V to 57 V. It accepts an input from 4 V to 60 V, making it a fit for 12 V, 24 V, and 48 V industrial rails where transient headroom matters. Switching at 52 kHz, the part uses a relatively low frequency that keeps EMI simple but demands larger magnetics than modern high-frequency converters. The single positive output is adjustable, and the device does not support synchronous rectification.
NRND — plan a replacement now
The through-hole TO-220-5 package is straightforward for prototyping and low-volume assembly but adds board area versus surface-mount alternatives.
For a production BOM that cannot tolerate a last-time-buy risk, this part should be qualified against a replacement during the current procurement cycle.