LM2576 3A Step-Down Switching Voltage Regulator
3A step-down (buck) switching regulator operating at 52kHz. Provides high efficiency (up to 88%) with thermal shutdown, current limiting, and external on/off control.
Aliase:LM2576T, LM2576-5.0, LM2576-ADJ, SIMPLE SWITCHER 3A
TO-220-5 / Pentawatt Front View
5 Pins
Pinout Table5
| Pin | Signal / Name | Type | Alternative Functions |
|---|---|---|---|
| 1 | VIN | Power | Unregulated Input Voltage (+4V to +40V; up to +60V on HV version) |
| 2 | OUTPUT | Power | Switching Output (Internal NPN switch emitter to inductor & catch diode) |
| 3 | GND | Ground | System Ground (0V; tab is connected to this pin) |
| 4 | FEEDBACK | Analog | Feedback Sense Input (Regulates to 1.23V on ADJ, or output on fixed versions) |
| 5 | ~ON/OFF | Digital | Shutdown Control Input (Low/GND = Regulator ON, High > 2.0V = Standby) |