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MIC5209-3.3BU from MICREL

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MIC5209-3.3BU

Manufacturer: MICREL

500mA Low-Noise LDO Regulator

Partnumber Manufacturer Quantity Availability
MIC5209-3.3BU,MIC520933BU MICREL 45 In Stock

Description and Introduction

500mA Low-Noise LDO Regulator # **MIC5209-3.3BU: A High-Performance LDO Voltage Regulator for Precision Applications**  

When it comes to reliable power management in electronic circuits, the **MIC5209-3.3BU** stands out as a high-performance, low-dropout (LDO) voltage regulator. Designed to deliver a stable **3.3V output** with exceptional efficiency, this component is ideal for applications requiring precise voltage regulation with minimal noise.  

## **Key Features**  

- **Low Dropout Voltage:** With a dropout voltage as low as **300mV at 500mA**, the MIC5209-3.3BU ensures efficient operation even when the input voltage is close to the output level.  
- **High Output Accuracy:** The regulator maintains **±2% output voltage accuracy**, making it suitable for sensitive analog and digital circuits.  
- **Ultra-Low Noise & High PSRR:** Featuring excellent power supply rejection ratio (PSRR) and low noise output, it is well-suited for RF, audio, and precision measurement applications.  
- **Thermal & Overcurrent Protection:** Built-in safeguards prevent damage from excessive heat or current, enhancing system reliability.  
- **Compact SOT-223 Package:** The small footprint makes it easy to integrate into space-constrained designs.  

## **Applications**  

The MIC5209-3.3BU is widely used in:  
- **Portable & battery-powered devices**  
- **Embedded systems & microcontrollers**  
- **Wireless communication modules**  
- **Medical & industrial instrumentation**  
- **Consumer electronics**  

Engineers and designers seeking a dependable LDO regulator with robust performance will find the **MIC5209-3.3BU** an excellent choice for maintaining stable power delivery in demanding environments. Its combination of efficiency, precision, and protection features ensures optimal performance across a broad range of applications.

Application Scenarios & Design Considerations

500mA Low-Noise LDO Regulator

Alternative Part Number

  • LP2985AIM5-3.3 --: Low-dropout 3.3V linear regulator in SOT-23-5 with similar current capability and pinout, widely available and a common drop-in replacement for Micrel LDOs.
  • LM1117MPX-3.3 --: 3.3V fixed LDO regulator with higher current rating, very common and cost-effective, suitable where board space and exact package match allow.
  • AP2112K-3.3TRG1 --: 3.3V low-dropout regulator in SOT-23-5, low quiescent current and good availability, a practical alternative for 3.3V rail regulation.
  • LM2937ET-3.3 --: 3.3V low-dropout linear regulator in TO-220, similar current capability and pinout, widely available and pin-compatible in most designs.
  • LP2950ACZ-3.3 --: 3.3V low-dropout regulator in TO-92, low quiescent current, suitable drop-in for low-power applications of the MIC5209.
  • AMS1117-3.3 --: Very common 3.3V LDO regulator with 1A output, low cost and broad availability, usable where the higher dropout is acceptable.

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