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MIC809LU from MICREL

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MIC809LU

Manufacturer: MICREL, MIC

Microprocessor Reset Circuits

Partnumber Manufacturer Quantity Availability
MIC809LU MICREL, MIC 4000 In Stock

Description and Introduction

Microprocessor Reset Circuits **Enhance System Reliability with the MIC809LU Voltage Monitor**  

In today’s fast-evolving electronics landscape, ensuring system stability and reliability is paramount. The MIC809LU, a precision voltage monitor from Microchip Technology, offers a robust solution for managing power supply integrity in a wide range of applications. Designed for efficiency and accuracy, this component is ideal for embedded systems, industrial controls, and consumer electronics where consistent voltage supervision is critical.  

The MIC809LU operates as a voltage supervisor, monitoring the system’s power rail and generating a reset signal when voltage levels fall below a predefined threshold. With an adjustable threshold range, it provides flexibility for diverse design requirements, ensuring compatibility with multiple supply voltages. Its low quiescent current consumption makes it particularly suitable for battery-powered devices, where energy efficiency is a priority.  

Key features include a manual reset input, allowing for external system control, and a highly accurate voltage detection capability with a typical threshold accuracy of ±1.5%. The device also incorporates a built-in delay timer, eliminating the need for external components while ensuring a stable reset pulse width during power-up or brownout conditions.  

Available in a compact SOT-23 package, the MIC809LU is designed for space-constrained applications without compromising performance. Its industrial-grade temperature range (-40°C to +85°C) ensures reliable operation in harsh environments, making it a dependable choice for automotive, medical, and industrial systems.  

For engineers seeking a cost-effective yet high-performance voltage monitoring solution, the MIC809LU delivers precision, efficiency, and durability—essential qualities for modern electronic designs. By integrating this component, developers can enhance system reliability while minimizing design complexity and component count.

Application Scenarios & Design Considerations

Microprocessor Reset Circuits

Alternative Part Number

  • MAX809LEUR+T --: Pin-compatible voltage supervisor with active-low reset and similar threshold, widely available and functionally equivalent to the MIC809L.
  • ADM809LARTZ-REEL --: Drop-in style reset supervisor in SOT-23 with matching reset threshold and active-low output, suitable replacement for MIC809L.
  • CAT809LTBI-GT3 --: Low-cost 3-pin reset supervisor with comparable threshold and active-low reset, good alternative when Maxim/ADI parts are unavailable.
  • TL7705ACDR --: General-purpose supply voltage supervisor with adjustable threshold that can be configured to match the MIC809LU reset function.

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