MCP130-485HI/TO

Product Overview

Category

The MCP130-485HI/TO belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in electronic devices for voltage monitoring and reset functions.

Characteristics

• Voltage monitoring: The MCP130-485HI/TO is designed to monitor the supply voltage of a system and provide a reset signal when the voltage falls below a certain threshold.
• Reset function: It ensures that the system is properly initialized after a power-on or brownout event.
• Low power consumption: The MCP130-485HI/TO operates with low power requirements, making it suitable for battery-powered applications.
• Wide operating voltage range: It can operate within a wide voltage range, typically from 1.6V to 5.5V.
• Small package size: This IC is available in a small TO-92 package, which makes it suitable for space-constrained designs.

Package and Quantity

The MCP130-485HI/TO is packaged in a TO-92 package. Each package contains one unit of the IC.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: Various threshold voltage options are available, such as 2.63V, 3.08V, 4.38V, etc.
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: Typically 1 µA
• Reset Timeout Period: Typically 140 ms

Pin Configuration

The MCP130-485HI/TO has three pins:

1. VDD: Power supply input pin.
2. GND: Ground reference pin.
3. RESET: Output pin that provides a reset signal to the system.

Functional Features

1. Voltage Monitoring: The MCP130-485HI/TO continuously monitors the supply voltage and compares it to a predefined threshold.
2. Reset Generation: When the supply voltage falls below the threshold, the MCP130-485HI/TO asserts the RESET pin, signaling a reset condition to the system.
3. Reset Timeout: The IC keeps the RESET pin asserted for a specific timeout period (typically 140 ms) after the voltage rises above the threshold. This ensures that the system remains in a reset state long enough for stable power to be established.

Advantages and Disadvantages

Advantages

• Reliable voltage monitoring and reset functionality.
• Low power consumption.
• Wide operating voltage range.
• Small package size for space-constrained designs.

Disadvantages

• Limited threshold voltage options available.
• Not suitable for high-voltage applications.

Working Principles

The MCP130-485HI/TO utilizes an internal voltage reference and comparator to monitor the supply voltage. When the voltage drops below the threshold, the comparator triggers the reset circuitry, which asserts the RESET pin. The reset signal remains active for the specified timeout period, allowing the system to properly initialize.

Application Field Plans

The MCP130-485HI/TO finds applications in various electronic devices where voltage monitoring and reset functions are critical. Some potential application fields include:

1. Microcontrollers and microprocessors: Ensuring proper initialization and reliable operation of these devices.
2. Embedded systems: Providing a reset signal to ensure system stability after power-on or brownout events.
3. Battery-powered devices: Monitoring battery voltage to prevent damage due to low voltage conditions.
4. Industrial control systems: Maintaining system integrity by resetting the system when the supply voltage falls below the threshold.

Alternative Models

There are several alternative models available in the market that offer similar voltage monitoring and reset functionalities. Some popular alternatives to the MCP130-485HI/TO include:

1. MAX809: Manufactured by Maxim Integrated, this IC offers a wide range of threshold voltage options and comes in various package sizes.
2. ADM6315: Produced by Analog Devices, it provides precise voltage monitoring and reset functions with low power consumption.
3. TPS3808: Texas Instruments offers this IC with adjustable threshold voltage options and enhanced features for system monitoring.

These alternative models can be considered based on specific application requirements and design constraints.

In conclusion, the MCP130-485HI/TO is an integrated circuit that provides reliable voltage monitoring and reset functions. With its low power consumption, wide operating voltage range, and small package size, it is suitable for various electronic devices. However, it has limited threshold voltage options and is not recommended for high-voltage applications. Its working principle involves continuous voltage monitoring and reset signal generation. The MCP130-485HI/TO finds applications in microcontrollers, embedded systems, battery-powered devices, and industrial control systems. Alternative models such as MAX809, ADM6315, and TPS3808 offer similar functionalities and can be considered as alternatives.