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MAX6839XSD3+T
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MAX6839XSD3+T

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Power Supply Supervisor
  • Characteristics: Low-power, high-accuracy voltage monitoring
  • Package: 8-pin SOT23
  • Essence: Monitors the voltage level of a power supply and provides reset signals to the system when necessary
  • Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

  • Supply Voltage Range: 1.6V to 5.5V
  • Reset Threshold Options: 2.63V, 2.93V, 3.08V, 4.38V, or adjustable
  • Reset Timeout Period: 140ms, 560ms, or adjustable
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6839XSD3+T has the following pin configuration:

  1. GND: Ground connection
  2. MR: Manual Reset input
  3. RESET: Active-low reset output
  4. VCC: Positive supply voltage
  5. TH: Threshold selection input
  6. CT: Capacitor connection for adjustable reset timeout
  7. NC: No Connection
  8. NC: No Connection

Functional Features

  • Voltage Monitoring: The MAX6839XSD3+T continuously monitors the supply voltage and asserts the reset signal when it falls below the specified threshold.
  • Manual Reset: The manual reset input (MR) allows the system to be reset externally.
  • Adjustable Reset Timeout: The reset timeout period can be adjusted using an external capacitor connected to the CT pin.
  • Power-On Reset: The device generates a reset pulse upon power-up to ensure proper system initialization.

Advantages and Disadvantages

Advantages: - Low-power consumption - High accuracy in voltage monitoring - Small package size - Adjustable reset threshold and timeout

Disadvantages: - Limited number of available threshold options - No built-in watchdog timer

Working Principles

The MAX6839XSD3+T operates by comparing the supply voltage with the selected threshold voltage. When the supply voltage drops below the threshold, the reset output is asserted, indicating a power failure or an out-of-specification condition. The reset signal remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The MAX6839XSD3+T is commonly used in various applications where reliable power supply monitoring is critical. Some potential application fields include:

  1. Embedded Systems: Ensuring proper system initialization and preventing data corruption during power fluctuations.
  2. Industrial Control Systems: Monitoring power supply integrity to prevent equipment damage and ensure safe operation.
  3. Automotive Electronics: Providing reset signals to microcontrollers and other critical components during voltage transients.
  4. Medical Devices: Ensuring continuous operation and patient safety by monitoring power supply stability.
  5. Consumer Electronics: Preventing data loss and maintaining system integrity during power interruptions.

Detailed and Complete Alternative Models

  1. MAX6816EUS+T: 6-pin SOT23 package, adjustable reset threshold, fixed reset timeout.
  2. MAX6820UK+T: 5-pin SOT23 package, fixed reset threshold, adjustable reset timeout.
  3. MAX6381XR26D3+: 6-pin SOT23 package, fixed reset threshold, fixed reset timeout.

These alternative models offer similar functionality and can be considered based on specific requirements and constraints.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van MAX6839XSD3+T in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of MAX6839XSD3+T in technical solutions:

  1. Q: What is the MAX6839XSD3+T? A: The MAX6839XSD3+T is a voltage supervisor IC that monitors power supply voltages and provides reset signals to microcontrollers, microprocessors, or other digital devices.

  2. Q: What is the operating voltage range of MAX6839XSD3+T? A: The operating voltage range of MAX6839XSD3+T is typically between 1.6V and 5.5V.

  3. Q: How many voltage inputs can MAX6839XSD3+T monitor? A: MAX6839XSD3+T can monitor up to three voltage inputs simultaneously.

  4. Q: Can MAX6839XSD3+T generate different reset thresholds for each voltage input? A: Yes, MAX6839XSD3+T allows individual programming of reset thresholds for each monitored voltage input.

  5. Q: What is the purpose of the watchdog timer feature in MAX6839XSD3+T? A: The watchdog timer feature in MAX6839XSD3+T helps detect software or hardware failures by generating a reset signal if the system fails to toggle a specific pin within a specified time period.

  6. Q: Can MAX6839XSD3+T provide both active-low and active-high reset outputs? A: Yes, MAX6839XSD3+T offers both active-low and active-high reset outputs, which can be selected based on the application requirements.

  7. Q: Does MAX6839XSD3+T have an adjustable reset timeout period? A: Yes, MAX6839XSD3+T allows users to program the reset timeout period using external capacitors.

  8. Q: Can MAX6839XSD3+T operate in a wide temperature range? A: Yes, MAX6839XSD3+T is designed to operate in a wide temperature range, typically from -40°C to +125°C.

  9. Q: What is the typical quiescent current consumption of MAX6839XSD3+T? A: The typical quiescent current consumption of MAX6839XSD3+T is very low, usually around 5µA.

  10. Q: Is MAX6839XSD3+T available in different package options? A: Yes, MAX6839XSD3+T is available in various package options, including SOT23-6 and TDFN-6, providing flexibility for different PCB layouts and space constraints.

Please note that these answers are general and may vary depending on the specific datasheet and application guidelines provided by the manufacturer.