MCP120T-475I/TT

Product Overview

Category

The MCP120T-475I/TT belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and supervising the power supply voltage in electronic systems.

Characteristics

• The MCP120T-475I/TT is a low-power, open-drain output voltage supervisor.
• It operates over a wide voltage range, making it suitable for various applications.
• This device offers a precision voltage reference and a comparator for accurate monitoring.
• It has a built-in delay time to prevent false triggering during power-up or power-down events.

Package

The MCP120T-475I/TT is available in a small SOT-23 package, which is commonly used for surface mount applications.

Essence

The essence of this product lies in its ability to ensure stable and reliable operation by monitoring the power supply voltage and providing an output signal when it falls below or exceeds a predefined threshold.

Packaging/Quantity

The MCP120T-475I/TT is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Supply Voltage Range: 1.6V to 6.0V
• Threshold Voltage Options: 4.75V
• Operating Temperature Range: -40°C to +125°C
• Quiescent Current: 5 µA (typical)
• Output Type: Open Drain
• Power-On Reset Delay Time: 100 ms (typical)

Detailed Pin Configuration

The MCP120T-475I/TT features three pins:

1. VDD: Connects to the positive supply voltage.
2. GND: Connects to the ground reference.
3. RESET: Output pin that provides the supervisory signal.

Functional Features

• Under-voltage Monitoring: The MCP120T-475I/TT continuously monitors the supply voltage and generates a reset signal when it falls below the threshold voltage.
• Over-voltage Monitoring: It also generates a reset signal when the supply voltage exceeds the threshold voltage.
• Power-On Reset Delay: The device includes a built-in delay time to ensure stable operation during power-up or power-down events.
• Open-Drain Output: The open-drain output allows for flexibility in connecting to different systems.

Advantages and Disadvantages

Advantages

• Wide operating voltage range enables compatibility with various electronic systems.
• Low quiescent current consumption helps conserve power.
• Small package size facilitates space-constrained designs.
• Accurate voltage monitoring ensures system reliability.

Disadvantages

• Limited threshold voltage options may not suit all applications.
• Lack of adjustable delay time may be a limitation in certain scenarios.

Working Principles

The MCP120T-475I/TT operates based on a voltage comparator circuit. It compares the supply voltage against the predefined threshold voltage. When the voltage falls below or exceeds this threshold, the device triggers the reset output pin, indicating a fault condition or power-up event.

Detailed Application Field Plans

The MCP120T-475I/TT finds application in various fields, including but not limited to: 1. Industrial automation systems 2. Automotive electronics 3. Consumer electronics 4. Medical devices 5. Power management systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MCP120T-475I/TT include: 1. MAX809: Voltage supervisors with adjustable threshold voltage options. 2. TPS3839: Ultra-low-power voltage supervisors with additional features like manual reset input. 3. ADM6315: Supervisory circuits with watchdog timer functionality.

These alternative models provide designers with options that cater to specific requirements and preferences.

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