TC642VUA

Product Overview

• Category: Integrated Circuit
• Use: Voltage Supervisor
• Characteristics: Precision, Low Power Consumption
• Package: SOIC-8
• Essence: Monitors and controls voltage levels in electronic systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 5.0V
• Reset Timeout Period: Adjustable from 1ms to 6.4s
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)

Detailed Pin Configuration

The TC642VUA features an SOIC-8 package with the following pin configuration:

1. GND: Ground
2. VCC: Supply Voltage
3. MR: Manual Reset Input
4. RESET: Active-Low Output
5. TH: Threshold Voltage Selection
6. CT: Capacitor Connection for Reset Timeout
7. GND: Ground
8. VCC: Supply Voltage

Functional Features

• Monitors supply voltage and asserts reset when it falls below the threshold voltage.
• Provides a manual reset input for immediate system reset.
• Adjustable reset timeout period allows customization based on system requirements.
• Active-low reset output signal indicates when the voltage is below the threshold.
• Low quiescent current ensures minimal power consumption.

Advantages and Disadvantages

Advantages

• Precise monitoring of voltage levels ensures reliable system operation.
• Low power consumption extends battery life in portable devices.
• Adjustable reset timeout period offers flexibility in different applications.
• Compact SOIC-8 package allows for space-efficient integration.

Disadvantages

• Limited threshold voltage options may not cater to all system requirements.
• Lack of built-in hysteresis may result in potential oscillations near the threshold voltage.

Working Principles

The TC642VUA is designed to monitor the supply voltage of electronic systems. It compares the voltage level with the selected threshold voltage and asserts the reset output when the voltage falls below the threshold. The reset timeout period can be adjusted using an external capacitor connected to the CT pin. The manual reset input allows for immediate system reset, overriding the voltage monitoring. The low quiescent current ensures minimal power consumption during operation.

Detailed Application Field Plans

The TC642VUA finds applications in various fields, including:

1. Power Management: Ensuring stable voltage levels in power supplies and battery-powered devices.
2. Microcontroller Systems: Providing reliable reset functionality to prevent erratic behavior during power-up or brownout conditions.
3. Industrial Control Systems: Monitoring critical voltage levels in control circuits to ensure safe and reliable operation.
4. Automotive Electronics: Protecting sensitive components from voltage fluctuations and ensuring proper system initialization.
5. Home Automation: Enabling intelligent control systems to respond appropriately to power interruptions and fluctuations.

Detailed and Complete Alternative Models

1. MAX823: Voltage Supervisor with Adjustable Reset Timeout and Multiple Threshold Options.
2. LTC2910: Precision Triple Supply Monitor with Programmable Reset Delay.
3. ADM6316: Low Power Microprocessor Supervisory Circuit with Manual Reset Input.

These alternative models offer similar functionality and features to the TC642VUA, providing flexibility in choosing the most suitable voltage supervisor for specific applications.

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