The document covers inventory, technical information, encyclopedia information, and hot topics. It includes the features and characteristics of the products.
The LM2575/LM2576 series are monolithic switching regulators designed for buck or buck‑boost applications. They integrate the regulator and compensation network in a single package, requiring only a choke, catch diode, and two capacitors for a complete DC‑DC converter. The series offers fixed‑voltage options (3.3 V, 5 V, 12 V) and an adjustable range from 1.23 V to 35 V, with typical efficiencies up to 88 %.
The datasheet provides absolute maximum ratings, electrical characteristics, ordering information, pin configurations, and mechanical dimensions for both TO‑220 and TO‑263 packages. It also includes typical application circuits and performance graphs for designers.
| Maximum Output Current (LM2575) | 1 A |
|---|---|
| Maximum Output Current (LM2576) | 3 A |
| Input Voltage Range | 4 V to 40 V |
| Fixed Output Voltages | 3.3 V, 5 V, 12 V |
| Adjustable Output Voltage Range | 1.23 V to 35 V |
| Typical Efficiency (5 V output) | 82 % |
| Switching Frequency | 47 kHz to 62 kHz |
| Package Types | TO‑220, TO‑263 |
The LM2575 can deliver up to 1 A of output current.
Both regulators operate with an input voltage from 4 V up to 40 V.
They are offered in TO‑220 and TO‑263 surface‑mount packages.
Typical efficiency is about 82 % when delivering a 5 V output.