LM2576 Overview
The LM2576 series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator. Fixed versions are available with a 3.3V, 5V, or 12V fixed output. Adjustable versions have an output voltage range from 1.23V to 37V.
LM2576 Key Features
- 3.3V, 5V, 12V, and adjustable output versions
- Voltage over specified line and load conditions: Fixed version: ±3% max. output voltage Adjustable version: ± 2% max. fe
- Guaranteed 3A output current
- Wide input voltage range: 4V to 40V
- Wide output voltage range 1.23V to 37V
- Requires only 4 external ponents
- 52kHz fixed frequency internal oscillator
- Low power standby mode IQ typically < 200µA
- 80% efficiency (adjustable version typically > 80%)
- Uses readily available standard inductors
