MCP120-475I/SN

Product Overview

Category

The MCP120-475I/SN belongs to the category of integrated circuits (ICs).

Use

This product is commonly used as a voltage supervisor or reset generator in various electronic devices.

Characteristics

• Voltage monitoring: The MCP120-475I/SN can monitor the supply voltage and provide a reset signal when it falls below a certain threshold.
• Low power consumption: This IC is designed to consume minimal power, making it suitable for battery-powered applications.
• Wide operating voltage range: It can operate within a wide voltage range, typically from 1.6V to 6.0V.
• Small package size: The MCP120-475I/SN comes in a small outline package (SN) which allows for space-efficient integration into electronic designs.
• High accuracy: It provides precise voltage monitoring with a low voltage threshold deviation.

Package and Quantity

The MCP120-475I/SN is available in a surface mount package. Each package contains one unit of the IC.

Specifications

• Supply Voltage Range: 1.6V to 6.0V
• Reset Threshold Voltage: 4.75V
• Reset Timeout Period: 140ms (typical)
• Quiescent Current: 5µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MCP120-475I/SN has a standard 8-pin configuration:

```

---

| | --| VDD GND |-- Pin 1: Ground (GND) --| MR NC |-- Pin 2: No Connection (NC) --| RESET VOUT|-- Pin 3: Reset Output (RESET) --| VDD GND |-- Pin 4: Ground (GND) --| VDD GND |-- Pin 5: Ground (GND) --| RESET VOUT|-- Pin 6: Reset Output (RESET) --| MR NC |-- Pin 7: No Connection (NC) |___________| ```

Functional Features

• Voltage Monitoring: The MCP120-475I/SN continuously monitors the supply voltage and compares it to the preset threshold.
• Reset Generation: When the supply voltage drops below the threshold, the IC generates a reset signal to ensure proper system initialization.
• Power-On Reset: It provides a power-on reset pulse during system startup to guarantee reliable operation.
• Manual Reset Input: The MR pin allows for manual reset control by asserting a low-level signal.
• Noise Immunity: The IC incorporates noise filtering techniques to prevent false triggering due to voltage fluctuations or transients.

Advantages and Disadvantages

Advantages

• Precise voltage monitoring ensures reliable system operation.
• Low power consumption extends battery life in portable devices.
• Small package size enables space-efficient integration.
• Wide operating voltage range accommodates various applications.
• Noise immunity prevents false resets caused by voltage fluctuations.

Disadvantages

• Limited number of available alternative models with similar specifications.
• May require additional external components for specific applications.

Working Principles

The MCP120-475I/SN operates based on a voltage comparator circuit. It compares the supply voltage against the preset threshold voltage. If the supply voltage falls below the threshold, the IC generates a reset signal. This signal remains active until the supply voltage rises above the threshold and a timeout period elapses.

Application Field Plans

The MCP120-475I/SN finds applications in various electronic systems where reliable voltage monitoring and reset generation are crucial. Some potential application fields include:

1. Microcontroller-based Systems: Ensures proper initialization and reliable operation of microcontroller units.
2. Embedded Systems: Provides voltage supervision for embedded systems, preventing erratic behavior during power fluctuations.
3. Industrial Control Systems: Monitors supply voltage in industrial control systems to prevent data corruption or equipment malfunction.
4. Automotive Electronics: Ensures stable operation of automotive electronic modules by generating resets during voltage drops.
5. Battery-Powered Devices: Extends battery life by initiating proper shutdown procedures when the battery voltage reaches critical levels.

Alternative Models

While the MCP120-475I/SN is a reliable choice, there are alternative models available with similar specifications. Some notable alternatives include:

1. MAX809: A voltage supervisor IC with adjustable reset threshold and timeout period.
2. ADM708: Offers additional features like watchdog timer functionality along with voltage monitoring.
3. TPS3808: Provides undervoltage detection and reset generation with adjustable threshold levels.

These alternative models offer flexibility in terms of specific requirements and may be suitable for different application scenarios.

In conclusion, the MCP120-475I/SN is an integrated circuit that serves as a voltage supervisor and reset generator. Its characteristics, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans,