MAX6758UTZD3+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX6758UTZD3+ is a voltage supervisor IC that monitors the power supply voltage of electronic devices. It ensures proper operation by generating a reset signal when the voltage falls below a specified threshold.

Characteristics: - Low quiescent current consumption - Wide operating voltage range - Adjustable reset threshold - Precision voltage reference - Power-on reset delay - Watchdog timer

Package: The MAX6758UTZD3+ is available in a small 6-pin SOT23 package, which is suitable for space-constrained applications.

Essence: This IC plays a crucial role in maintaining the stability and reliability of electronic systems by monitoring the power supply voltage and initiating appropriate actions when necessary.

Packaging/Quantity: The MAX6758UTZD3+ is typically sold in reels containing 3000 units.

Specifications

• Operating Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Range: 0.4V to VDD - 0.1V
• Quiescent Current: 2µA (typical)
• Power-On Reset Delay: 100ms (typical)
• Watchdog Timer Timeout Period: 1.6s (typical)

Detailed Pin Configuration

The MAX6758UTZD3+ features the following pin configuration:

```

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| | --| RESET | --| GND | --| MR | --| VDD | --| RESET_OUT | |___________| ```

Pin Descriptions: - RESET: Active-low reset input. - GND: Ground reference. - MR: Manual reset input. - VDD: Power supply voltage. - RESET_OUT: Active-low reset output.

Functional Features

1. Voltage Monitoring: The MAX6758UTZD3+ continuously monitors the power supply voltage and compares it with the user-defined threshold.
2. Reset Generation: When the voltage falls below the threshold, the IC generates an active-low reset signal to initiate a system reset.
3. Power-On Reset Delay: The device incorporates a power-on reset delay to ensure stable operation during power-up.
4. Watchdog Timer: The integrated watchdog timer provides an additional layer of protection by generating a reset signal if the system fails to toggle a specific input within the defined timeout period.

Advantages and Disadvantages

Advantages: - Low quiescent current consumption helps conserve power in battery-operated devices. - Wide operating voltage range allows compatibility with various power supply configurations. - Adjustable reset threshold enables customization for different applications. - Precision voltage reference ensures accurate monitoring. - Power-on reset delay prevents false resets during power-up. - Watchdog timer enhances system reliability.

Disadvantages: - Limited number of pins may restrict the integration of additional features. - SOT23 package may pose challenges for manual soldering or rework.

Working Principles

The MAX6758UTZD3+ operates by comparing the power supply voltage with the user-defined reset threshold. If the voltage drops below this threshold, the IC generates an active-low reset signal. The power-on reset delay ensures that the reset signal is not triggered immediately upon power-up, allowing the voltage to stabilize. The watchdog timer monitors a specific input and generates a reset signal if the input remains unchanged for a predetermined period, indicating a potential system failure.

Detailed Application Field Plans

The MAX6758UTZD3+ finds application in various electronic systems where reliable voltage monitoring and reset generation are critical. Some potential fields of application include: - Microcontrollers and microprocessors - Embedded systems - Industrial automation - Automotive electronics - Power management systems

Detailed and Complete Alternative Models

1. MAX6759UTZD3+: Similar to the MAX6758UTZD3+, but with an additional open-drain output for power-fail detection.
2. MAX6760UTZD3+: Voltage supervisor IC with adjustable reset threshold and a watchdog timer, available in a 6-pin SOT23 package.
3. MAX6315US29D3+: Precision voltage monitor with a fixed 2.93V threshold and a manual reset input, offered in a 6-pin SOT23 package.

These alternative models provide similar functionality and can be considered based on specific application requirements.

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