lm2575 is a 1a adjustable output voltage simple switch regulator
The LM2575 series is a family of monolithic step‑down (buck) switching regulators that deliver up to 1 A of output current with high efficiency. Fixed output versions are available at 3.3 V, 5 V, 12 V, 15 V, and an adjustable version, while the HV version supports up to 63 V input.
The document includes a general description, key features, typical applications, ordering information, absolute maximum ratings, and detailed electrical characteristics. Package options such as 5‑lead TO‑220, 16‑pin DIP, and surface‑mount variants are listed, along with thermal and protection specifications.
| Output current | 1 A |
|---|---|
| Input voltage range | 40 V to 60 V (HV version) |
| Oscillator frequency | 52 kHz |
| Efficiency (Vin=12 V, Iout=1 A) | 75 % |
| Maximum supply voltage (HV version) | 63 V |
Fixed output versions are available at 3.3 V, 5 V, 12 V, and 15 V, plus an adjustable version.
Only four external components are required.
The regulator uses a fixed 52 kHz internal oscillator.
The LM2575HV version can handle up to 63 V supply voltage.