MIC809RU-TR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the power supply voltage of a system - Generates a reset signal when the voltage falls below a specified threshold - Ensures proper operation and prevents data corruption in microcontrollers and other digital systems

Package: SOT-23-3

Essence: The MIC809RU-TR is a voltage supervisor IC designed to monitor the power supply voltage and provide a reset signal to the system when the voltage drops below a predetermined level.

Packaging/Quantity: The MIC809RU-TR is available in a SOT-23-3 package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 4.63V
• Reset Timeout Period: 140ms (typical)
• Quiescent Current: 1.0µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MIC809RU-TR has three pins:

1. VCC: Power supply input pin (+)
2. GND: Ground reference pin (-)
3. RESET: Output pin that provides a reset signal to the system

Functional Features

• Accurate monitoring of power supply voltage
• Adjustable reset threshold voltage options for flexibility
• Low quiescent current for power efficiency
• Built-in glitch immunity to prevent false triggering
• Open-drain output for compatibility with various systems

Advantages and Disadvantages

Advantages: - Reliable voltage monitoring for system stability - Flexible reset threshold voltage options - Low power consumption - Robust design with glitch immunity - Compatible with a wide range of systems

Disadvantages: - Limited reset timeout period - Requires an external pull-up resistor for proper operation

Working Principles

The MIC809RU-TR operates by continuously monitoring the power supply voltage. When the voltage falls below the specified threshold, the internal comparator triggers and pulls the RESET pin low, generating a reset signal. This signal alerts the system that the power supply voltage is insufficient and prompts it to enter a safe state or perform a system reset.

Detailed Application Field Plans

The MIC809RU-TR is commonly used in various applications where reliable voltage monitoring is critical. Some typical application fields include:

1. Microcontroller Systems: Ensures proper operation and prevents data corruption in microcontroller-based systems.
2. Industrial Control Systems: Monitors power supply voltage in industrial automation and control systems to maintain stability and prevent malfunctions.
3. Automotive Electronics: Provides voltage supervision in automotive electronic systems, ensuring safe and reliable operation.
4. Battery-Powered Devices: Protects battery-powered devices from undervoltage conditions, extending battery life and preventing damage.

Detailed and Complete Alternative Models

1. MAX809: Similar voltage supervisor IC with adjustable reset threshold voltage options and various package options.
2. TL7705: Voltage supervisor IC with fixed reset threshold voltage and different package options.
3. ADM6315: Precision voltage monitor IC with adjustable reset threshold voltage and low power consumption.

These alternative models offer similar functionality and can be considered as substitutes for the MIC809RU-TR based on specific requirements and preferences.

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