MIC4576-3.3BU Datasheet PDF - Micrel

●200kHz Simple 3A Buck Regulator • Fixed 200kHz operation • 3.3V, 5V, and adjustable output versions • Voltage over specified line and load conditions: Fixed version: ±3% max. output voltage Adjustable version: ±2% max. feedback voltage • Guaranteed 3A switch current • Wide 4V to 36V input voltage range • Wide 1.23V to 33V output voltage range • Requires minimum external components • < 200µA typical shutdown mode • 75% efficiency (adjustable version > 75% typical) • Standard inductors are 25% of typical LM2576 values • Thermal shutdown • Overcurrent protection • 100% electrical thermal limit burn-in Applications • Simple high-efficiency step-down (buck) regulator • Efficient preregulator for linear regulators • On-card switching regulators • Positive-to-negative converter (inverting buck-boost) • Battery Charger • Negative boost converter • Step-down to 3.3V for Intel Pentium™ and similar microprocessors