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MIC5237-3.3YU from MICREL

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MIC5237-3.3YU

Manufacturer: MICREL, MIC

500mA Low-Dropout Regulator

Partnumber Manufacturer Quantity Availability
MIC5237-3.3YU,MIC523733YU MICREL, MIC 3950 In Stock

Description and Introduction

500mA Low-Dropout Regulator # **MIC5237-3.3YU: A High-Performance LDO Voltage Regulator for Precision Applications**  

In today’s demanding electronic designs, stable and efficient power management is critical. The **MIC5237-3.3YU** from Microchip Technology is a high-performance, low-dropout (LDO) voltage regulator designed to deliver reliable 3.3V output with exceptional accuracy and low noise. Ideal for sensitive analog and digital circuits, this regulator ensures consistent performance in a variety of applications, from industrial systems to portable devices.  

## **Key Features**  

- **Ultra-Low Dropout Voltage:** With a dropout voltage as low as 300mV at 150mA, the MIC5237-3.3YU maximizes efficiency, making it suitable for battery-powered applications where extended runtime is essential.  
- **High Accuracy:** The device maintains a tight output voltage tolerance of **±2%**, ensuring precision in voltage-sensitive applications.  
- **Low Quiescent Current:** Consuming only **75µA** in operation (and as low as **0.1µA** in shutdown mode), it minimizes power loss, enhancing energy efficiency.  
- **Excellent Line and Load Regulation:** The MIC5237-3.3YU provides stable output even under varying input voltages and load conditions, reducing the need for additional filtering.  
- **Thermal and Overcurrent Protection:** Built-in safeguards prevent damage from excessive heat or current, improving system reliability.  

## **Applications**  

The MIC5237-3.3YU is well-suited for:  
- **Portable and battery-operated devices** (wearables, IoT sensors)  
- **Embedded systems and microcontrollers**  
- **Medical and industrial instrumentation**  
- **Automotive electronics**  

Available in a compact **SOT-223-3** package, this LDO regulator combines high performance with space-saving design, making it an excellent choice for modern electronics requiring dependable power management.  

For engineers seeking a robust, low-noise voltage regulator with minimal power consumption, the **MIC5237-3.3YU** delivers a compelling solution that balances efficiency, precision, and reliability.

Application Scenarios & Design Considerations

500mA Low-Dropout Regulator

Alternative Part Number

  • LM3940IT-3.3 --: 3.3V low-dropout linear regulator in TO-220, widely available and functionally equivalent to the MIC5237-3.3YU.
  • AMS1117-3.3 --: Very common 3.3V LDO regulator with similar dropout and current capability, low cost and easy to source as a drop-in replacement.
  • LD1117V33 --: 3.3V fixed LDO regulator in TO-220 package with comparable electrical characteristics and broad availability.
  • LM3940IS-3.3 --: Pin-compatible 3.3V low-dropout linear regulator in TO-263 with similar current rating and dropout performance.
  • LD1117S33TR --: 3.3V low-dropout regulator in SOT-223/TO-263 style packages with similar electrical characteristics and broad availability.

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