TC1272-5ENBTR

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Supervisor

Characteristics: - Monitors the voltage level of a power supply - Generates a reset signal when the voltage falls below a certain threshold - Ensures proper functioning of microcontrollers and other digital circuits

Package: SOT-23-5

Essence: The TC1272-5ENBTR is a voltage supervisor IC designed to monitor the voltage level of a power supply and provide a reset signal when the voltage falls below a specific threshold. It is commonly used in applications where maintaining stable voltage levels is critical for the proper operation of microcontrollers and other digital circuits.

Packaging/Quantity: The TC1272-5ENBTR is available in a SOT-23-5 package, which contains one IC per package.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage: 4.63V
• Reset Timeout Period: 140ms
• Quiescent Current: 10µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TC1272-5ENBTR has five pins arranged as follows:

```

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| | --| VDD |-- Pin 1: Power Supply Input --| GND |-- Pin 2: Ground --| MR |-- Pin 3: Manual Reset Input --| RESET |-- Pin 4: Reset Output --| VOUT |-- Pin 5: Voltage Monitor Output |_______| ```

Functional Features

1. Voltage Monitoring: The TC1272-5ENBTR continuously monitors the voltage level of the power supply.
2. Reset Generation: When the voltage falls below the reset threshold, the IC generates a reset signal.
3. Manual Reset: The manual reset input (MR) allows for an external reset signal to override the internal monitoring.
4. Reset Output: The reset output (RESET) provides a signal indicating that the power supply voltage is below the threshold.
5. Voltage Monitor Output: The voltage monitor output (VOUT) provides a continuous indication of the power supply voltage level.

Advantages and Disadvantages

Advantages: - Compact size and easy integration due to SOT-23-5 package - Low quiescent current consumption - Wide operating temperature range - Reliable voltage monitoring and reset generation

Disadvantages: - Fixed reset threshold voltage may not be suitable for all applications - Limited timeout period for reset signal generation

Working Principles

The TC1272-5ENBTR operates by comparing the power supply voltage with a fixed threshold voltage. When the voltage falls below the threshold, the internal circuitry triggers the reset output, indicating a low voltage condition. The reset signal remains active until the voltage rises above the threshold or a manual reset signal is applied.

Detailed Application Field Plans

The TC1272-5ENBTR finds applications in various fields where voltage supervision is critical for system reliability. Some common application areas include:

1. Microcontroller Systems: Ensures proper functioning of microcontrollers by providing a reset signal when the power supply voltage drops below the threshold.
2. Digital Circuits: Protects digital circuits from erratic behavior caused by insufficient power supply voltage.
3. Battery-Powered Devices: Monitors battery voltage to prevent damage due to deep discharge.
4. Industrial Control Systems: Provides reliable voltage monitoring in industrial automation systems to avoid malfunctions.

Detailed and Complete Alternative Models

1. TC1272-3.3ENBTR: Similar to TC1272-5ENBTR, but with a lower reset threshold voltage of 3.3V.
2. TC1272-ADJENBTR: Adjustable voltage supervisor IC that allows the user to set a custom reset threshold voltage.

These alternative models offer flexibility in choosing the appropriate reset threshold voltage for specific applications.

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