Maxim Integrated
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MAX825MEXK+T
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MAX825MEXK+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Supervisor
  • Characteristics: Low-power, microprocessor reset circuit
  • Package: SC-70 (SOT-323) package
  • Essence: Monitors the power supply voltage and generates a reset signal to the microprocessor when the voltage falls below a predetermined threshold.
  • Packaging/Quantity: Tape and Reel packaging, 3000 units per reel

Specifications

  • Supply Voltage Range: 1.0V to 5.5V
  • Reset Threshold Options: 2.63V, 2.93V, 3.08V, 4.38V
  • Reset Timeout Period: 140ms, 280ms, 560ms, 1120ms
  • Operating Temperature Range: -40°C to +85°C
  • Quiescent Current: 5µA (typical)

Detailed Pin Configuration

The MAX825MEXK+T IC has the following pin configuration:

  1. GND: Ground connection
  2. RESET: Output reset signal
  3. MR: Manual reset input
  4. VCC: Power supply voltage input

Functional Features

  • Monitors the power supply voltage continuously
  • Generates a reset signal when the voltage drops below the set threshold
  • Provides manual reset capability through the MR pin
  • Low quiescent current for power efficiency
  • Wide operating voltage range for versatility

Advantages and Disadvantages

Advantages

  • Low-power consumption
  • Small form factor package
  • Wide operating voltage range
  • Multiple reset threshold options
  • Manual reset capability

Disadvantages

  • Limited reset timeout period options
  • Not suitable for high-voltage applications

Working Principles

The MAX825MEXK+T is designed to monitor the power supply voltage and ensure proper operation of microprocessors. It compares the supply voltage with a preset threshold and generates a reset signal when the voltage falls below this threshold. The reset signal is then sent to the microprocessor, initiating a system reset.

The IC also provides a manual reset input (MR pin) that allows the user to manually trigger a reset. This can be useful during system testing or debugging.

Detailed Application Field Plans

The MAX825MEXK+T is commonly used in various applications where reliable voltage monitoring and microprocessor reset functionality are required. Some typical application fields include:

  1. Embedded Systems: Used in microcontroller-based systems to ensure stable operation by resetting the microcontroller when the power supply voltage drops below a certain level.
  2. Industrial Automation: Employed in industrial control systems to prevent data corruption or system malfunction due to power supply fluctuations.
  3. Automotive Electronics: Integrated into automotive electronic systems to provide reliable reset functionality for microcontrollers, ensuring proper operation even in harsh environments.
  4. Consumer Electronics: Utilized in consumer electronic devices such as smartphones, tablets, and gaming consoles to protect against voltage-related issues and ensure smooth operation.

Detailed and Complete Alternative Models

  • MAX823MEXK+T
  • MAX824MEXK+T
  • MAX826MEXK+T
  • MAX827MEXK+T
  • MAX828MEXK+T

These alternative models offer similar voltage supervisor functionality with slight variations in specifications and features. Users can choose the most suitable model based on their specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MAX825MEXK+T v technických řešeních

Sure! Here are 10 common questions and answers related to the application of MAX825MEXK+T in technical solutions:

  1. Q: What is the MAX825MEXK+T? A: The MAX825MEXK+T is a voltage monitor and reset IC designed for use in microcontroller-based systems.

  2. Q: What is the purpose of the MAX825MEXK+T? A: The MAX825MEXK+T provides a reset signal to the microcontroller when the supply voltage falls below a specified threshold, ensuring proper system operation.

  3. Q: What is the operating voltage range of the MAX825MEXK+T? A: The MAX825MEXK+T operates within a voltage range of 1.6V to 5.5V.

  4. Q: How does the MAX825MEXK+T detect low voltage conditions? A: The MAX825MEXK+T uses an internal voltage reference and comparator to monitor the supply voltage. When it drops below the threshold, it triggers a reset signal.

  5. Q: Can I adjust the voltage threshold for the reset signal? A: Yes, the MAX825MEXK+T allows you to set the voltage threshold using external resistors.

  6. Q: Does the MAX825MEXK+T have any additional features? A: Yes, it includes a manual reset input, a watchdog timer, and a power-on reset delay.

  7. Q: Can I use the MAX825MEXK+T in battery-powered applications? A: Yes, the low operating voltage range and low quiescent current make it suitable for battery-powered devices.

  8. Q: Is the MAX825MEXK+T available in different package options? A: Yes, the MAX825MEXK+T is available in a SOT23-5 package.

  9. Q: What is the typical reset time of the MAX825MEXK+T? A: The typical reset time is 200ms, ensuring that the microcontroller has enough time to stabilize before resuming operation.

  10. Q: Can I use the MAX825MEXK+T in industrial applications? A: Yes, the MAX825MEXK+T is suitable for industrial environments due to its wide operating temperature range and robust design.

Please note that these answers are general and may vary depending on the specific requirements and application of the MAX825MEXK+T in your technical solution.