TC646VOA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Supervisor
• Characteristics: Precision, Low Power Consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Monitors and controls voltage levels in electronic systems
• Packaging/Quantity: Available in tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage: 1.8V to 5.5V
• Threshold Voltage Options: 2.5V, 3.0V, 3.3V, 5.0V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Output Type: Active-Low Open Drain

Detailed Pin Configuration

The TC646VOA IC has the following pin configuration:

1. VDD: Supply Voltage
2. GND: Ground
3. MR: Manual Reset Input
4. RESET: Active-Low Reset Output
5. TH: Threshold Voltage Selection Input
6. TO: Reset Timeout Period Selection Input

Functional Features

• Monitors supply voltage and asserts reset when it falls below the threshold voltage.
• Provides an adjustable reset timeout period to ensure proper system initialization.
• Offers a manual reset input for immediate system reset.
• Uses an active-low open-drain output for easy interfacing with other devices.

Advantages and Disadvantages

Advantages: - High precision voltage monitoring. - Low power consumption. - Wide operating voltage range. - Adjustable reset timeout period. - Easy integration with other devices.

Disadvantages: - Limited threshold voltage options. - Single-channel voltage monitoring.

Working Principles

The TC646VOA is designed to monitor the supply voltage of electronic systems. It compares the input voltage with a user-selectable threshold voltage. When the supply voltage falls below the threshold, the IC asserts the reset output, indicating a power failure or low voltage condition. The reset timeout period can be adjusted to allow for proper system initialization. Additionally, a manual reset input is provided for immediate system reset.

Detailed Application Field Plans

The TC646VOA is commonly used in various applications, including:

1. Power Supply Monitoring: Ensuring stable operation by monitoring voltage levels.
2. Microcontroller Systems: Resetting microcontrollers during power-up or brownout conditions.
3. Battery-Powered Devices: Preventing damage due to low battery voltage.
4. Industrial Control Systems: Monitoring and controlling voltage levels in industrial equipment.
5. Automotive Electronics: Protecting sensitive components from voltage fluctuations.

Detailed and Complete Alternative Models

1. TC54VCX: Voltage Supervisor with Adjustable Threshold Voltage
2. MAX823: Low-Power Voltage Monitor with Manual Reset
3. LTC2937: Dual Voltage Supervisor with Programmable Reset Timeout
4. ADM6315: Precision Voltage Monitor with Watchdog Timer
5. TPS3839: Ultra-Low Power Voltage Supervisor with Power-On Reset

These alternative models offer similar functionality and can be considered as alternatives to the TC646VOA.

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