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MIC5319-2.8BD5 from MICREL

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MIC5319-2.8BD5

Manufacturer: MICREL, MIC

500mA μCap Ultra-Low Dropout High PSRR LDO Regulator

Partnumber Manufacturer Quantity Availability
MIC5319-2.8BD5,MIC531928BD5 MICREL, MIC 163880 In Stock

Description and Introduction

500mA μCap Ultra-Low Dropout High PSRR LDO Regulator **Introducing the MIC5319-2.8BD5: A High-Performance LDO Regulator for Precision Applications**  

In today’s fast-evolving electronics landscape, reliable power management is critical for ensuring optimal performance in sensitive circuits. The MIC5319-2.8BD5 from Microchip Technology stands out as a high-performance, low-dropout (LDO) voltage regulator designed to deliver stable and efficient power in space-constrained applications.  

Engineered for precision, the MIC5319-2.8BD5 provides a fixed 2.8V output with an impressive dropout voltage of just 120mV at 150mA load current. This ensures efficient operation even when the input voltage is close to the output level, making it ideal for battery-powered devices and energy-sensitive systems. With a low quiescent current of 40µA (typical), it minimizes power loss, extending battery life in portable electronics such as IoT sensors, wearables, and medical devices.  

The regulator features a fast transient response, maintaining stable output under dynamic load conditions—an essential trait for modern microprocessors, FPGAs, and RF modules. Its high power supply rejection ratio (PSRR) of 70dB at 1kHz further enhances noise immunity, ensuring clean power delivery in noisy environments.  

Housed in a compact 5-pin SOT-23 package, the MIC5319-2.8BD5 is optimized for space-sensitive designs without compromising performance. Built-in protection features, including thermal shutdown and current limiting, enhance system reliability under fault conditions.  

Whether used in industrial automation, consumer electronics, or embedded systems, the MIC5319-2.8BD5 offers a robust, low-noise power solution with the efficiency and stability required for next-generation applications. Its combination of low dropout, high PSRR, and compact footprint makes it a versatile choice for engineers seeking dependable voltage regulation in demanding environments.  

For designers prioritizing precision and efficiency, the MIC5319-2.8BD5 delivers a compelling balance of performance and reliability.

Application Scenarios & Design Considerations

500mA μCap Ultra-Low Dropout High PSRR LDO Regulator

Alternative Part Number

  • LP2985AIM5-2.8 --: Low-dropout linear regulator with fixed 2.8V output in SOT-23-5, functionally equivalent to the MIC5319-2.8BD5.
  • TLV70228PDBVR --: 2.8V fixed LDO in SOT-23-5 with low quiescent current, suitable drop-in replacement for the original regulator.
  • AP2112K-2.8TRG1 --: 2.8V fixed LDO regulator in SOT-23-5 with similar current capability and pinout, a practical alternative.

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