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MIC5259-2.1YML from MICREL

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MIC5259-2.1YML

Manufacturer: MICREL, MICREL

300mA High PSRR, Low Noise μCap CMOS LDO

Partnumber Manufacturer Quantity Availability
MIC5259-2.1YML,MIC525921YML MICREL, MICREL 6000 In Stock

Description and Introduction

300mA High PSRR, Low Noise μCap CMOS LDO # MIC5259-2.1YML: A High-Performance LDO Voltage Regulator for Precision Applications  

In today’s fast-evolving electronics landscape, reliable power management is critical for ensuring optimal performance in sensitive applications. The **MIC5259-2.1YML** from Microchip Technology stands out as a high-performance, low-dropout (LDO) voltage regulator designed to deliver stable and efficient power in space-constrained designs.  

## Key Features and Benefits  

The MIC5259-2.1YML provides a fixed output voltage of **2.1V** with an ultra-low dropout voltage, making it ideal for battery-powered and low-voltage systems. Its **150mA output current capability** ensures sufficient power for microcontrollers, sensors, and other low-power ICs while maintaining high efficiency.  

One of the standout features of this regulator is its **low quiescent current**, which minimizes power loss in standby or idle modes—crucial for extending battery life in portable devices. Additionally, the MIC5259-2.1YML offers excellent **line and load regulation**, ensuring consistent performance even under varying input conditions.  

## Robust and Reliable Design  

Engineered for stability, the MIC5259-2.1YML requires only a small **1µF ceramic capacitor** for output stabilization, reducing board space and component costs. Its **thermal shutdown and current-limiting protection** enhance system reliability, safeguarding against overheating and short-circuit conditions.  

Available in a compact **SOT-23-5 package**, this LDO is well-suited for applications where space is at a premium, including IoT devices, wearables, and embedded systems.  

## Applications  

- **Battery-powered electronics** – Extends runtime with low quiescent current.  
- **Portable and handheld devices** – Ensures stable voltage in compact designs.  
- **Industrial and medical equipment** – Delivers precision power for sensitive circuits.  

The **MIC5259-2.1YML** combines efficiency, reliability, and compact form factor, making it an excellent choice for engineers seeking a dependable power solution for modern electronic systems.

Application Scenarios & Design Considerations

300mA High PSRR, Low Noise μCap CMOS LDO

Alternative Part Number

  • LP2985AIM5-2.1 --: Low-noise 150mA LDO with fixed 2.1V output in SOT-23-5, similar dropout and noise performance to the MIC5259 family.
  • TLV70221PDBVR --: 300mA low-dropout regulator with 2.1V fixed output in SOT-23-5, good alternative when slightly higher current capability is acceptable.
  • AP2127K-2.1TRG1 --: Low-noise 300mA CMOS LDO with 2.1V output in SOT-23-5, widely available and pin-compatible with typical MIC5259 applications.
  • AP2112K-2.1TRG1 --: 2.1V fixed-output LDO in SOT-23-5 with 600mA capability, stable with ceramic capacitors and cost-effective alternative.

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