MIC4576-5BU Step Down Regulator IC

MIC4576-5BU Step Down Regulator IC 

The MIC4576-5BU is a high-performance step-down (buck) switching voltage regulator designed to provide a fixed 5V regulated output from a higher input voltage source. It is capable of delivering high output current (typically up to 3A) with high efficiency, making it an excellent choice for powering microcontrollers, digital circuits, and embedded systems.

The MIC4576 integrates the switching transistor, oscillator, control circuitry, and protection features into a single IC, which significantly reduces external component count and simplifies power supply design. It is well known for its robust performance, good regulation, and reliability in industrial and commercial applications.

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Applications

• DC-DC step-down (buck) power supplies
• 5V regulated power supplies
• Embedded systems and microcontroller power rails
• Industrial control electronics
• Automotive electronics
• Battery-powered devices
• Communication and networking equipment
• Distributed power systems

Features

• Regulator Type: Step-down (Buck) switching regulator
• Output Voltage: Fixed 5V
• Output Current: Up to 3A (typical, depends on package and cooling)
• High efficiency compared to linear regulators
• Integrated power switch
• Requires minimal external components
• Built-in current limiting and thermal shutdown protection
• Good line and load regulation
• Reliable and stable operation

MIC4576 Datasheet