TC1272-10ENBTR

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 - Ensures proper operation of microcontrollers and other digital systems

Package: SOT-23-5

Essence: The TC1272-10ENBTR 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 specified threshold. It is commonly used in various electronic devices to ensure the reliable operation of microcontrollers and other digital systems.

Packaging/Quantity: The TC1272-10ENBTR is available in a SOT-23-5 package, which contains 3000 units per reel.

Specifications

• Supply Voltage Range: 1.2V to 6.0V
• Reset Threshold Voltage: 1.0V
• Reset Timeout Period: 140ms
• Quiescent Current: 7µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TC1272-10ENBTR has five pins arranged as follows:

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Pin 1: GND (Ground)
Pin 2: MR (Manual Reset)
Pin 3: VCC (Supply Voltage)
Pin 4: RESET (Reset Output)
Pin 5: N/C (No Connection)

Functional Features

1. Voltage Monitoring: The TC1272-10ENBTR continuously monitors the supply voltage and compares it with the preset threshold voltage.
2. Reset Generation: When the supply voltage falls below the threshold voltage, the IC generates a reset signal on the RESET pin.
3. Manual Reset: The MR pin allows for manual resetting of the device, overriding the automatic reset function.
4. Reset Timeout: After the supply voltage rises above the threshold voltage, the reset signal remains active for a fixed timeout period (140ms) to ensure stable system operation.

Advantages and Disadvantages

Advantages: - Compact SOT-23-5 package for space-constrained applications - Wide supply voltage range allows compatibility with various power sources - Low quiescent current minimizes power consumption - Manual reset option provides flexibility in system design

Disadvantages: - Fixed reset threshold voltage may not be suitable for all applications - Limited number of pins restricts additional functionality integration

Working Principles

The TC1272-10ENBTR operates by continuously monitoring the supply voltage using an internal voltage reference. When the supply voltage falls below the preset threshold voltage, the IC triggers the reset circuitry, generating a reset signal on the RESET pin. This signal remains active for the specified timeout period after the supply voltage rises above the threshold, ensuring proper system initialization.

Detailed Application Field Plans

The TC1272-10ENBTR is widely used in various electronic systems that require reliable voltage monitoring and reset functionality. Some common application fields include:

1. Microcontroller Systems: Ensures proper initialization and reliable operation of microcontrollers, preventing data corruption or erratic behavior during power-up or voltage fluctuations.
2. Embedded Systems: Provides voltage supervision for embedded systems, including IoT devices, industrial control systems, and automotive electronics.
3. Battery-Powered Devices: Monitors battery voltage levels in portable devices, preventing excessive discharge and protecting against undervoltage conditions.
4. Power Supply Units: Used in power supply units to monitor the output voltage and generate a reset signal in case of voltage drop or instability.

Detailed and Complete Alternative Models

1. TC1272-12ENBTR: Similar to TC1272-10ENBTR, but with a higher reset threshold voltage of 1.2V.
2. TC1272-33ENBTR: Similar to TC1272-10ENBTR, but with a lower reset threshold voltage of 3.3V.
3. TC1272-50ENBTR: Similar to TC1272-10ENBTR, but with a lower reset threshold voltage of 5.0V.

These alternative models provide flexibility in choosing the appropriate reset threshold voltage for specific application requirements.

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