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MIC5238-1.1YM5 from MICREL

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MIC5238-1.1YM5

Manufacturer: MICREL, MIC

Ultra-Low Quiescent Current, 150mA μCap LDO Regulator

Partnumber Manufacturer Quantity Availability
MIC5238-1.1YM5,MIC523811YM5 MICREL, MIC 4305 In Stock

Description and Introduction

Ultra-Low Quiescent Current, 150mA μCap LDO Regulator # **MIC5238-1.1YM5: A Compact and Efficient LDO Voltage Regulator for Precision Applications**  

The **MIC5238-1.1YM5** is a high-performance, low-dropout (LDO) voltage regulator designed to deliver stable and precise power in space-constrained applications. With a fixed output voltage of **1.1V** and a maximum output current of **150mA**, this regulator is ideal for powering sensitive analog and digital circuits where consistent voltage regulation is critical.  

Housed in a **SOT-23-5 package**, the MIC5238-1.1YM5 offers an ultra-compact footprint, making it suitable for portable devices, IoT modules, and embedded systems. Its low dropout voltage—just **120mV at full load**—ensures efficient operation even when the input supply is close to the output voltage, extending battery life in low-power applications.  

Key features of the MIC5238-1.1YM5 include **low quiescent current (40µA typical)**, which minimizes power consumption in standby modes, and **fast transient response**, ensuring stable performance under dynamic load conditions. Additionally, the regulator incorporates built-in protection features such as **thermal shutdown and current limiting**, safeguarding against overheating and short circuits.  

With a **wide input voltage range of 2.3V to 5.5V**, the MIC5238-1.1YM5 is versatile enough to support various power sources, including single-cell lithium-ion batteries and regulated DC supplies. Its high **power supply rejection ratio (PSRR)** reduces noise interference, making it an excellent choice for RF and precision analog circuits.  

Engineers seeking a reliable, space-efficient LDO regulator for low-voltage applications will find the **MIC5238-1.1YM5** to be a robust solution, combining performance, efficiency, and protection in a compact form factor. Whether used in wearables, medical devices, or industrial controls, this regulator ensures consistent power delivery with minimal overhead.

Application Scenarios & Design Considerations

Ultra-Low Quiescent Current, 150mA μCap LDO Regulator

Alternative Part Number

  • LP2985AIM5-1.1 --: Low-dropout linear regulator in SOT-23-5 with 1.1V fixed output, similar current capability and pinout, widely available and cost-effective.
  • TLV70211PDBVR --: 1.1V fixed LDO in SOT-23-5 with low quiescent current and good PSRR, suitable drop-in replacement for small load applications.
  • AP2112K-1.1TRG1 --: 1.1V fixed LDO regulator in SOT-23-5, stable with ceramic capacitors and offers comparable dropout and load performance.

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