TC642EUA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics:
  • Monitors voltage levels and provides reset signals.
  • Low power consumption.
  • Small form factor.
• Package: SOT-23-5
• Essence: Ensures reliable operation by monitoring voltage levels and resetting the system when necessary.
• Packaging/Quantity: Available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.8V to 6.0V
• Reset Threshold Options:
  • 2.63V (TC642EUA)
  • 3.08V (TC642EUB)
  • 4.38V (TC642EUC)
• Reset Timeout Period Options:
  • 140ms (TC642EUA)
  • 280ms (TC642EUB)
  • 560ms (TC642EUC)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TC642EUA features a SOT-23-5 package with the following pin configuration:

1. GND (Ground)
2. MR (Manual Reset)
3. VCC (Supply Voltage)
4. RESET (Reset Output)
5. TH (Threshold Input)

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below the specified threshold.
• Provides a manual reset input for immediate system reset.
• Adjustable reset timeout period allows customization based on application requirements.
• Open-drain reset output can be easily interfaced with other devices.

Advantages

• Compact size enables integration into space-constrained designs.
• Low power consumption prolongs battery life in portable applications.
• Wide supply voltage range accommodates various power sources.
• Adjustable reset threshold and timeout period offer flexibility for different voltage monitoring scenarios.

Disadvantages

• Limited to voltage monitoring and reset functionality, may not suit applications requiring more complex supervision features.
• SOT-23-5 package may be challenging for hand soldering due to its small size.

Working Principles

The TC642EUA operates by continuously monitoring the supply voltage through the TH pin. When the voltage falls below the programmed threshold, the RESET pin is pulled low, indicating a system reset condition. The reset signal remains active until the voltage rises above the threshold or a manual reset is triggered via the MR pin. The reset timeout period can be adjusted using external components.

Detailed Application Field Plans

The TC642EUA finds application in various fields where reliable voltage monitoring and system reset are critical. Some potential application areas include:

1. Microcontroller-based systems
2. Embedded systems
3. Power management circuits
4. Battery-powered devices
5. Industrial automation

Detailed and Complete Alternative Models

1. TC642EUB: Similar to TC642EUA but with a higher reset threshold and longer reset timeout period.
2. TC642EUC: Similar to TC642EUA but with an even higher reset threshold and longer reset timeout period.
3. TC54VCX162835: Voltage supervisor IC with additional features like watchdog timer and adjustable delay.

(Note: This list is not exhaustive and other alternative models may exist.)

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