MIC4576 Datasheet

MIC4576 3A Buck Regulator

The MIC4576 is a series of easy-to-use fixed and adjustable BiCMOS step-down (buck) switch-mode voltage regulators. The 200 kHz MIC4576 duplicates the pinout and function of the 52 kHz LM2576. The higher switching frequency may allow up to a 2:1 reduction in output filter inductor size. The MIC4576 is.

Features

• Fixed 200 kHz Operation
• 3.3V, 5V, and Adjustable Output Versions
• Voltage Over Specified Line and Load Conditions: - Fixed version: ±3% maximum output voltage - Adjustable version: ±2% maximum 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
• <200 µA Typical Shutdown Mode
• 75% Efficiency (Adjustable Version > 75% Typical)
• Standard Inductors are 25% of Typical LM2576 Inductor Values
• Thermal Shutdown
• Overcurrent Protection
• 100% Electrical Thermal Limit Burn-In Applic.