TC647BEPA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Low-power, Precision, Adjustable Threshold
• Package: 8-pin PDIP (Plastic Dual In-line Package)
• Essence: Monitors and controls voltage levels in electronic systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.5V to 6.0V
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active-Low, Open Drain
• Threshold Voltage Options: Adjustable or Fixed
• Reset Timeout Period: Adjustable or Fixed
• Quiescent Current: 10µA (typical)

Detailed Pin Configuration

1. GND (Ground)
2. VDD (Supply Voltage)
3. MR (Master Reset)
4. RESET (Active-Low Reset Output)
5. TH (Threshold Voltage Input)
6. CT (Reset Timeout Control)
7. NC (No Connection)
8. RESET (Active-Low Reset Output)

Functional Features

• Monitors supply voltage and generates a reset signal when it falls below a certain threshold.
• Provides an active-low reset output that remains asserted until the supply voltage rises above the threshold.
• Offers adjustable threshold voltage and reset timeout period options for customization.
• Low quiescent current consumption makes it suitable for battery-powered applications.
• Open-drain output allows easy interfacing with other digital circuits.

Advantages

• Precise voltage monitoring ensures reliable system operation.
• Adjustable threshold and reset timeout provide flexibility for various applications.
• Low power consumption extends battery life in portable devices.
• Compact 8-pin package saves board space.
• Open-drain output simplifies circuit design.

Disadvantages

• Limited to monitoring supply voltages within the specified range.
• Requires external components for threshold voltage and reset timeout adjustment.
• Not suitable for applications requiring high-speed voltage monitoring.

Working Principles

The TC647BEPA is a voltage supervisor IC that continuously monitors the supply voltage of an electronic system. It compares the voltage level with a preset threshold value. When the supply voltage falls below this threshold, the IC generates an active-low reset signal. The reset signal remains asserted until the supply voltage rises above the threshold or until a specified timeout period elapses.

The threshold voltage and reset timeout period can be adjusted using external resistors and capacitors connected to the TH and CT pins, respectively. This allows customization of the monitoring parameters according to the specific requirements of the application.

Detailed Application Field Plans

The TC647BEPA finds applications in various electronic systems where reliable voltage monitoring and reset generation are critical. Some potential application fields include:

1. Microcontrollers and Microprocessors: Ensures proper initialization and safe operation by resetting the system when the supply voltage drops below a certain level.
2. Power Management Systems: Protects sensitive components from undervoltage conditions and prevents damage due to improper power supply.
3. Industrial Control Systems: Monitors power supply integrity in control panels and triggers system resets to maintain stable operation.
4. Automotive Electronics: Provides voltage supervision in automotive systems, preventing malfunctions caused by voltage fluctuations or drops.
5. Battery-Powered Devices: Extends battery life by efficiently managing power consumption and ensuring safe operation during low-voltage conditions.

Detailed and Complete Alternative Models

1. MAX823: Voltage Supervisor IC with Adjustable Threshold and Reset Timeout.
2. LTC2910: Precision Voltage Monitor with Programmable Threshold and Reset Delay.
3. ADM6315: Low-Power Microprocessor Reset Circuit with Fixed Threshold Voltage.
4. TPS3808: Ultra-Low Quiescent Current Voltage Supervisor with Adjustable Threshold.
5. MCP101: Supervisory Circuits with Fixed or Adjustable Threshold Voltage.

These alternative models offer similar functionality and can be considered as substitutes for the TC647BEPA based on specific application requirements.

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