TC1277-20ENBTR

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 TC1277-20ENBTR 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 TC1277-20ENBTR 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: 2.0V
• Reset Timeout Period: 200ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)
• Output Type: Active Low

Detailed Pin Configuration

The TC1277-20ENBTR has five pins arranged as follows:

```

---

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

Functional Features

• Monitors the power supply voltage continuously
• Generates a reset signal when the voltage drops below the preset threshold
• Provides a manual reset input for system initialization
• Battery voltage monitoring capability

Advantages and Disadvantages

Advantages: - Ensures stable operation of electronic systems by preventing malfunctions caused by low power supply voltage - Small package size allows for space-efficient integration into various applications - Low quiescent current minimizes power consumption

Disadvantages: - Fixed reset threshold voltage may not be suitable for all applications - Lack of adjustable timeout period limits flexibility in certain scenarios

Working Principles

The TC1277-20ENBTR operates by continuously monitoring the power supply voltage using an internal voltage reference. When the voltage falls below the preset threshold (2.0V), the reset output is activated, indicating a low voltage condition. The reset signal remains active until the voltage rises above the threshold or a manual reset input is applied.

Detailed Application Field Plans

The TC1277-20ENBTR is commonly used in various electronic systems where stable operation is critical. Some typical application fields include:

1. Microcontroller Systems: Ensures reliable operation of microcontrollers by monitoring the power supply voltage and initiating a reset when necessary.
2. Battery-Powered Devices: Protects battery-powered devices from malfunction due to low battery voltage by generating a reset signal for system recovery.
3. Industrial Control Systems: Provides voltage supervision in industrial control systems to prevent errors caused by insufficient power supply voltage.
4. Automotive Electronics: Monitors the power supply voltage in automotive electronics to ensure proper functioning and prevent system failures.

Detailed and Complete Alternative Models

1. MAX809: Voltage supervisor IC with adjustable reset threshold and timeout period.
2. ADM6315: Low-power voltage monitor with adjustable reset threshold and manual reset input.
3. TPS3808: Precision voltage supervisor with programmable delay time and adjustable reset threshold.
4. MCP101: Voltage supervisor with adjustable reset threshold and manual reset input.

These alternative models offer similar functionality to the TC1277-20ENBTR but may provide additional features or customization options based on specific application requirements.

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