MAX6439UTAGRD3+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Circuit
• Characteristics:
  • Monitors the voltage level of a power supply and generates a reset signal when the voltage falls below a specified threshold.
  • Provides a reliable way to ensure proper operation of electronic devices by preventing them from operating in an undervoltage condition.
  • Compact and highly integrated design.
• Package: Thin SOT23-6 package
• Essence: Voltage monitoring and reset functionality in a small form factor IC.
• Packaging/Quantity: Tape and Reel, 3000 units per reel.

Specifications

• Supply Voltage Range: 1.5V to 5.5V
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 4.38V, 4.63V, 4.75V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 3µA (typical)

Detailed Pin Configuration

The MAX6439UTAGRD3+T has the following pin configuration:

1. GND: Ground connection
2. MR: Manual Reset input
3. VCC: Power supply input
4. RESET: Reset output
5. TH: Threshold voltage selection input
6. NC: No Connection

Functional Features

• Voltage Monitoring: The MAX6439UTAGRD3+T continuously monitors the voltage level at the VCC pin.
• Reset Generation: When the voltage at the VCC pin falls below the threshold voltage set by the TH pin, the MAX6439UTAGRD3+T generates a reset signal at the RESET pin.
• Manual Reset: The MR pin allows for manual reset control, overriding the automatic reset generation.
• Adjustable Threshold Voltage: The TH pin provides options to set the threshold voltage according to the specific application requirements.

Advantages and Disadvantages

Advantages: - Compact and highly integrated design saves board space. - Wide supply voltage range allows for versatile applications. - Low quiescent current minimizes power consumption. - Manual reset capability provides flexibility in system control.

Disadvantages: - Limited threshold voltage options may not cover all voltage monitoring needs. - SOT23-6 package may require additional care during soldering.

Working Principles

The MAX6439UTAGRD3+T operates by comparing the voltage at the VCC pin with the threshold voltage set by the TH pin. When the VCC voltage falls below the threshold, the internal circuitry generates a reset signal at the RESET pin. This reset signal can be used to initiate system reset or perform other necessary actions. The MR pin allows for manual reset control, overriding the automatic reset generation.

Detailed Application Field Plans

The MAX6439UTAGRD3+T finds applications in various fields where voltage monitoring and reset functionality are crucial. Some potential application areas include:

1. Microcontrollers: Ensuring proper operation of microcontroller-based systems by monitoring the power supply voltage and initiating a reset when necessary.
2. Industrial Control Systems: Preventing malfunctioning of industrial control systems due to undervoltage conditions.
3. Battery-Powered Devices: Protecting battery-powered devices from operating in low voltage conditions, thereby extending battery life.
4. Automotive Electronics: Monitoring the voltage level in automotive electronic systems to prevent damage or malfunctioning.

Detailed and Complete Alternative Models

1. MAX6439UTAGRD3: Similar to MAX6439UTAGRD3+T but without tape and reel packaging.
2. MAX6439UTAGRD3+T/V+: Variant with extended temperature range (-40°C to +125°C).
3. MAX6439UTAGRD3+T/AT: Variant with adjustable threshold voltage.

Note: This is not an exhaustive list of alternative models. Please refer to the manufacturer's documentation for a complete list of available options.

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