TC646BEUA

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: 1.5V to 6.0V
• Threshold Voltage Options: 2.63V, 3.08V, 4.38V, 4.63V
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)

Detailed Pin Configuration

The TC646BEUA is an 8-pin integrated circuit with the following pin configuration:

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

Functional Features

• Monitors supply voltage and generates a reset signal when it falls below a specified threshold.
• Provides manual reset capability through the MR pin.
• Offers multiple threshold voltage options for flexibility in different applications.
• Includes a reference voltage output for external use.
• Low quiescent current ensures minimal power consumption.

Advantages and Disadvantages

Advantages

• Precise voltage monitoring helps prevent system malfunctions.
• Low power consumption extends battery life in portable devices.
• Multiple threshold voltage options cater to various voltage level requirements.
• Manual reset feature allows for user intervention when needed.
• Reference voltage output can be utilized for other purposes.

Disadvantages

• Limited to a specific package type (SOIC-8).
• Reset timeout period is fixed and not adjustable.
• Operating temperature range may not be suitable for extreme environments.

Working Principles

The TC646BEUA operates by continuously monitoring the supply voltage using an internal voltage reference. When the voltage falls below the selected threshold, the reset output is activated, indicating a low voltage condition. The reset remains active until the voltage rises above the threshold or a manual reset signal is applied.

Detailed Application Field Plans

The TC646BEUA finds applications in various electronic systems where precise voltage monitoring is critical. Some potential application fields include:

1. Power Supply Units: Ensuring stable voltage levels in power supplies.
2. Microcontrollers: Protecting sensitive microcontrollers from voltage fluctuations.
3. Battery-Powered Devices: Extending battery life by preventing deep discharge.
4. Industrial Control Systems: Monitoring voltage in control panels and equipment.
5. Automotive Electronics: Safeguarding automotive electronics from voltage drops.

Detailed and Complete Alternative Models

1. TC54VC2702EMB - Voltage Supervisor with Adjustable Threshold
2. MAX823LEUK+T - Precision Voltage Monitor with Manual Reset
3. ADM708TARZ - Voltage Supervisor with Watchdog Timer
4. MCP101T-450I/TT - Low Quiescent Current Voltage Detector
5. TPS3809L30DBVR - Programmable Voltage Supervisor with Power-On Reset

These alternative models offer similar functionality and can be considered as substitutes for the TC646BEUA in different applications.

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