TC1277-10ENBTR

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 specified threshold - Prevents system malfunction due to insufficient power supply voltage

Package: SOT-23-5

Essence: The TC1277-10ENBTR is a voltage supervisor IC designed to ensure stable operation of electronic systems by monitoring the power supply voltage and generating a reset signal when it falls below a predetermined threshold.

Packaging/Quantity: The TC1277-10ENBTR is available in a SOT-23-5 package. It is typically sold in reels containing 3000 units.

Specifications

• Supply Voltage Range: 1.2V to 6.0V
• Reset Threshold Voltage: 1.0V to 4.63V (in 100mV increments)
• Reset Timeout Period: 140ms, 280ms, 560ms, or 1120ms (selectable)
• Quiescent Current: 3µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TC1277-10ENBTR has five pins arranged as follows:

```

---

| | --| VDD |-- Pin 1: Power Supply Voltage (1.2V to 6.0V) --| GND |-- Pin 2: Ground --| MR |-- Pin 3: Manual Reset Input (active-low) --| RESET |-- Pin 4: Reset Output --| VOUT |-- Pin 5: Voltage Monitor Output |_______| ```

Functional Features

1. Voltage Monitoring: The TC1277-10ENBTR continuously monitors the power supply voltage and compares it to the preset threshold voltage.
2. Reset Signal Generation: When the monitored voltage falls below the threshold, the IC generates a reset signal on the RESET pin.
3. Manual Reset Input: The MR pin allows for manual resetting of the system by pulling it low.
4. Selectable Timeout Period: The reset signal remains active for a user-selectable timeout period after the voltage rises above the threshold.
5. Low Quiescent Current: The IC consumes very low quiescent current, minimizing power consumption in battery-powered applications.

Advantages and Disadvantages

Advantages: - Reliable voltage monitoring and reset signal generation - Wide operating voltage range - Selectable timeout period for flexibility - Low quiescent current for power efficiency

Disadvantages: - Limited number of available timeout periods - Manual reset input may require additional circuitry for implementation

Working Principles

The TC1277-10ENBTR operates by comparing the power supply voltage with the preset threshold voltage. When the voltage drops below the threshold, the IC triggers the reset output, indicating a power failure. The reset signal remains active for the selected timeout period after the voltage rises above the threshold. The manual reset input allows for immediate system reset if required.

Detailed Application Field Plans

The TC1277-10ENBTR is widely used in various electronic systems where stable operation is critical. Some common application fields include:

1. Microcontrollers: Ensuring reliable operation of microcontroller-based systems by monitoring the power supply voltage and preventing data corruption during voltage fluctuations.
2. Embedded Systems: Protecting embedded systems from malfunctions caused by insufficient power supply voltage, ensuring uninterrupted operation.
3. Industrial Control Systems: Monitoring power supply voltage in industrial control systems to prevent damage to sensitive components and ensure system reliability.
4. Automotive Electronics: Safeguarding automotive electronic systems against voltage drops, preventing potential hazards and ensuring proper functioning.

Detailed and Complete Alternative Models

1. TC1277-12ENBTR: Similar to TC1277-10ENBTR but with a higher reset threshold voltage of 1.2V to 5.0V.
2. TC1277-15ENBTR: Similar to TC1277-10ENBTR but with a higher reset threshold voltage of 1.5V to 5.5V.
3. TC1277-33ENBTR: Similar to TC1277-10ENBTR but with a lower reset threshold voltage of 0.9V to 3.3V.

These alternative models offer different reset threshold voltage ranges to accommodate specific application requirements.

Note: The above information is based on the datasheet provided by the manufacturer. Users are advised to refer to the latest datasheet for accurate and up-to-date specifications.