TC647VUA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics:
  • Monitors voltage levels and provides reset signals
  • Low power consumption
  • Wide operating voltage range
  • Small package size
• Package: SOP-8 (Small Outline Package)
• Essence: Ensures reliable operation by monitoring voltage levels and resetting the system when necessary.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.5V to 6.0V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Voltage Options:
  • 2.93V (TC647VUA-2.93)
  • 3.08V (TC647VUA-3.08)
  • 4.63V (TC647VUA-4.63)
• Reset Timeout Period: 140ms (typical)

Detailed Pin Configuration

The TC647VUA is an SOP-8 package with the following pin configuration:

1. VCC: Supply Voltage Input
2. GND: Ground
3. RESET: Active-Low Reset Output
4. MR: Manual Reset Input
5. TH: Threshold Voltage Selection Input
6. CT: Capacitor Connection for Reset Timeout
7. NC: No Connection
8. VCC: Supply Voltage Input

Functional Features

• Monitors supply voltage and generates a reset signal when it falls below the threshold voltage.
• Provides a manual reset input for immediate system reset.
• Selectable threshold voltage options allow customization for different applications.
• Reset timeout period ensures that the system remains in a reset state for a specific duration after voltage recovery.

Advantages and Disadvantages

Advantages: - Efficient voltage monitoring and reset functionality. - Low power consumption, suitable for battery-powered applications. - Wide operating voltage range enables compatibility with various systems. - Compact SOP-8 package saves board space.

Disadvantages: - Limited threshold voltage options may not cover all voltage requirements. - Reset timeout period is fixed and cannot be adjusted.

Working Principles

The TC647VUA operates by continuously monitoring the supply voltage. When the voltage falls below the selected threshold voltage, the IC generates an active-low reset signal on the RESET pin. This signal can be used to reset the system or trigger other necessary actions.

The manual reset input (MR) allows the user to force a reset regardless of the monitored voltage level. This feature is useful during system testing or troubleshooting.

The reset timeout period ensures that the system remains in a reset state for a specific duration after the voltage recovers. This prevents premature system operation before the voltage stabilizes.

Detailed Application Field Plans

The TC647VUA is commonly used in various electronic systems where reliable voltage monitoring and reset functionality are crucial. Some application fields include:

1. Microcontroller Systems: Ensures proper initialization and reliable operation of microcontroller-based systems.
2. Industrial Control Systems: Provides voltage supervision in industrial automation and control systems.
3. Automotive Electronics: Monitors critical voltages in automotive applications, such as engine control units and safety systems.
4. Power Supply Units: Protects sensitive components by resetting the system when voltage levels become unstable.
5. Battery-Powered Devices: Maximizes battery life by efficiently monitoring voltage levels and triggering resets when necessary.

Detailed and Complete Alternative Models

1. TC648VUA: Similar to TC647VUA but with additional power-on reset functionality.
2. TC646VUA: Voltage supervisor with adjustable threshold voltage options.
3. TC649VUA: Enhanced version with extended operating temperature range (-40°C to +125°C).

These alternative models offer similar voltage monitoring and reset capabilities, but with additional features or specifications tailored to specific application requirements.

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