MIC4576-3.3BU

The MIC4576-3.3BU is designed as one kind of 200kHz simple 3A buck voltage regulator that is available in 3.3V, and 5V fixed output versions or a 1.23V to 33V adjustable output version. MIC4576-3.3BU can be used in (1)Simple high-efficiency step-down (buck) regulator; (2)Efficient preregulator for linear regulat-ors; (3)On-card switching regulators; (4)Positive-to-negative converter (inverting buck-boost); (5)Battery Charger; (6)Negative boost converter; (7)Step-down to 3.3V for Intel Pentium and similar microprocessors.

Features of the MIC4576-3.3BU are:(1)Fixed 200kHz operation; (2)3.3V, 5V, and adjustable output versions; (3)Voltage over specified line and load conditions: Fixed version: +/-3% max. output voltage and Adjustable version: +/-2% max. feedback voltage; (4)Guaranteed 3A switch current; (5)Wide 4V to 36V input voltage range; (6)Wide 1.23V to 33V output voltage range; (7)Requires minimum external components; (8)< 200 uA typical shutdown mode; (9)75% efficiency (adjustable version > 75% typical); (10)Standard inductors are 25% of typical LM2576 values; (11)Thermal shutdown; (12)Overcurrent protection; (13)100% electrical thermal limit burn-in.

The absolute maximum ratings of the MIC4576-3.3BU can be summarized as:(1)Supply Voltage (VIN): +40 V;(2)Shutdown Voltage:0.3V to +36V;(3)Output Switch (VSW), Steady State:1V;(4)Feedback Voltage (VFB): +3.8 V;(5)Storage Temperature:65°C to +150°C;(6)Junction Temperature: +150°C. If you want to know more information such as the electrical characteristics about the MIC4576-3.3BU, please download the datasheet in www.seekic.com or www.chinaicmart.com .