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MIC5239-3.3YS from MIC

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MIC5239-3.3YS

Manufacturer: MIC, MICREL

Low Quiescent Current 500mA μCap LDO Regulator

Partnumber Manufacturer Quantity Availability
MIC5239-3.3YS,MIC523933YS MIC, MICREL 4949 In Stock

Description and Introduction

Low Quiescent Current 500mA μCap LDO Regulator # **Introducing the MIC5239-3.3YS: A High-Performance LDO Voltage Regulator**  

For engineers and designers seeking a reliable, low-dropout (LDO) voltage regulator, the **MIC5239-3.3YS** stands out as a robust solution. This high-performance regulator delivers a fixed **3.3V output** with exceptional accuracy, making it ideal for applications requiring stable power in space-constrained environments.  

## **Key Features**  

- **Ultra-Low Dropout Voltage:** With a dropout voltage as low as **150mV at 150mA**, the MIC5239-3.3YS ensures efficient operation even when the input voltage is close to the output level.  
- **High Output Accuracy:** The device maintains **±2% output voltage accuracy** over line, load, and temperature variations, ensuring consistent performance in demanding conditions.  
- **Low Quiescent Current:** Consuming just **75µA (typical)**, it minimizes power loss, making it suitable for battery-powered and energy-sensitive applications.  
- **Thermal and Overcurrent Protection:** Built-in safeguards enhance reliability by preventing damage from excessive heat or current surges.  
- **Compact Package:** Available in a **SOT-223-3** package, the regulator is optimized for space-efficient PCB designs.  

## **Applications**  

The MIC5239-3.3YS is well-suited for a variety of applications, including:  
- **Portable and battery-operated devices**  
- **Embedded systems and IoT modules**  
- **Industrial control systems**  
- **Consumer electronics**  
- **Medical instrumentation**  

## **Why Choose the MIC5239-3.3YS?**  

Engineers value the MIC5239-3.3YS for its combination of **low power consumption, high efficiency, and robust protection features**. Whether powering microcontrollers, sensors, or wireless modules, this LDO regulator ensures stable voltage delivery with minimal energy waste.  

For projects requiring a dependable **3.3V power supply**, the MIC5239-3.3YS offers a compact, high-performance solution that meets the demands of modern electronic designs.

Application Scenarios & Design Considerations

Low Quiescent Current 500mA μCap LDO Regulator

Alternative Part Number

  • LP2951-3.3 --: Low-dropout linear regulator with fixed 3.3V output and similar current capability; widely available and pin-compatible in many designs.
  • LM2937-3.3 --: 3.3V fixed LDO regulator with comparable dropout and load current, suitable drop-in replacement for many MIC5239 applications.
  • LT1963A-3.3 --: Low-noise 3.3V LDO with similar voltage accuracy and current rating, offering improved performance where board space allows.
  • LP2985AIM5-3.3 --: Low-dropout 3.3V linear regulator in SOT-23-5 with similar current capability and pin-compatible footprint, widely available and cost-effective.
  • LT1763CS8-3.3 --: Low-noise 3.3V LDO regulator with comparable dropout and load current, suitable drop-in replacement in many MIC5239 applications.
  • TPS7A4901DGNR --: High-PSRR 3.3V LDO with low quiescent current and adjustable output, offering improved noise performance for sensitive analog rails.

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