Specs side by side
2 parts compared · 0 differing specs across 5 total parameters.
| Parameter | ||
|---|---|---|
| Case | TO-220-5 / TO-263-5 | TO-220-5 / TO-263-5 |
| Component Category | Step-Down Switching Regulators | Step-Down Switching Regulators |
| Market Reality | The LM2576 is the 3A step-down that powered industrial boards and instrument supplies long before the module era: 52kHz switching, a 1.23V feedback reference, and a five-pin outline shared with its later 150kHz sibling. The substitution story has two halves: the upgrade to the LM2596 class, which is pin for pin and keeps the larger 100uH-class inductor working with lower ripple, and the fake-module story running the other way - modules marked with the newer part whose chips switch at about 50kHz with 330-470uH inductors: rebadged 2576-class dies that overheat at rated current. Read the frequency, read the inductor, then read the marking. | The LM2576 is the 3A step-down that powered industrial boards and instrument supplies long before the module era: 52kHz switching, a 1.23V feedback reference, and a five-pin outline shared with its later 150kHz sibling. The substitution story has two halves: the upgrade to the LM2596 class, which is pin for pin and keeps the larger 100uH-class inductor working with lower ripple, and the fake-module story running the other way - modules marked with the newer part whose chips switch at about 50kHz with 330-470uH inductors: rebadged 2576-class dies that overheat at rated current. Read the frequency, read the inductor, then read the marking. |
| Role In Circuit | Original Reference Part | Original Reference Part |
| Sourcing Status | Active Shenzhen Spot Sourcing (24–48h) | Active Shenzhen Spot Sourcing (24–48h) |