MIC809SYC3

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 certain threshold - Ensures proper operation and prevents data corruption in microcontrollers and other digital systems

Package: SOT-23-3

Essence: The MIC809SYC3 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 specified level.

Packaging/Quantity: The MIC809SYC3 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, 3.08V, 3.15V, 4.38V, 4.63V, 4.75V
• Reset Timeout Period: 140ms (min)
• Quiescent Current: 1µA (typ)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MIC809SYC3 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

• Monitors the power supply voltage continuously.
• Generates a reset signal when the voltage falls below the specified threshold.
• Provides a stable reset output during power-up and power-down conditions.
• Low quiescent current consumption helps in power-sensitive applications.
• Built-in glitch immunity ensures reliable operation in noisy environments.

Advantages and Disadvantages

Advantages: - Compact SOT-23-3 package allows for space-saving designs. - Wide supply voltage range enables compatibility with various systems. - Multiple reset threshold voltage options provide flexibility in different applications. - Low quiescent current consumption helps in extending battery life.

Disadvantages: - Lack of adjustable reset timeout period limits customization options. - Limited number of available reset threshold voltage options may not suit all requirements.

Working Principles

The MIC809SYC3 operates by comparing the power supply voltage with a reference voltage. When the voltage drops below the specified threshold, the internal circuitry triggers the RESET pin to go low, indicating a system reset condition. The reset signal remains active until the power supply voltage rises above the threshold and stabilizes.

Detailed Application Field Plans

The MIC809SYC3 is commonly used in various electronic systems where reliable power supply monitoring is crucial. Some application areas include:

1. Microcontroller Systems: Ensures proper initialization and prevents data corruption during power-up and brownout conditions.
2. Industrial Control Systems: Provides fault detection and system reset capability in critical control applications.
3. Automotive Electronics: Monitors the vehicle's power supply to ensure safe operation and prevent damage to sensitive components.
4. Battery-Powered Devices: Protects against undervoltage conditions and extends battery life by initiating a shutdown or hibernation mode.

Detailed and Complete Alternative Models

1. MAX809: Similar voltage supervisor IC offered by Maxim Integrated.
2. TL7705: Voltage supervisor IC from Texas Instruments with comparable features.
3. ADM803: Analog Devices' voltage monitor IC suitable for various applications.
4. MCP130: Microchip's voltage supervisor IC with adjustable reset timeout period.

These alternative models offer similar functionality and can be considered as alternatives to the MIC809SYC3 based on specific requirements and availability.

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