TPS3124J12DBVTG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Monitors voltage levels in electronic systems - Provides reset signals during power-up, power-down, and brownout conditions - Ensures proper system operation by preventing code execution errors - Low quiescent current consumption - Wide operating voltage range - Small package size for space-constrained applications

Package: SOT-23 (DBV)

Essence: The TPS3124J12DBVTG4 is a voltage supervisor IC that plays a crucial role in maintaining stable and reliable operation of electronic systems.

Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.2V to 6.5V
• Threshold Voltage Options: 1.2V, 1.8V, 2.5V, 3.3V, 5V
• Reset Timeout Period: Adjustable or Fixed (1.25s)
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 1.5µA (typical)

Pin Configuration

The TPS3124J12DBVTG4 has the following pin configuration:

```

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| | --| VDD | --| GND | --| MR | --| RESET | --| VIT | |___________| ```

• VDD: Power supply input
• GND: Ground reference
• MR: Manual reset input
• RESET: Reset output
• VIT: Voltage input threshold selection

Functional Features

1. Voltage Monitoring: The TPS3124J12DBVTG4 continuously monitors the voltage level at the VIT pin and compares it with the selected threshold voltage. It generates a reset signal when the voltage falls below the threshold, ensuring proper system operation.

2. Reset Signal Generation: During power-up, power-down, or brownout conditions, the TPS3124J12DBVTG4 asserts the RESET pin to initiate a system reset. This prevents code execution errors and ensures a clean start for the system.

3. Adjustable Reset Timeout Period: The IC allows users to adjust the timeout period for the reset signal. This feature enables customization based on specific system requirements.

4. Low Quiescent Current Consumption: The TPS3124J12DBVTG4 consumes minimal quiescent current, making it suitable for battery-powered applications where power efficiency is crucial.

Advantages

• Reliable Voltage Monitoring: The TPS3124J12DBVTG4 provides accurate and stable voltage monitoring, preventing system malfunctions due to voltage fluctuations.
• Small Package Size: The SOT-23 package offers a compact form factor, making it ideal for space-constrained designs.
• Wide Operating Voltage Range: The IC supports a wide range of supply voltages, enhancing its versatility in various electronic systems.
• Adjustable Reset Timeout: The ability to customize the reset timeout period allows flexibility in system design.

Disadvantages

• Lack of Advanced Features: The TPS3124J12DBVTG4 does not offer advanced features such as built-in watchdog timers or adjustable hysteresis.

Working Principles

The TPS3124J12DBVTG4 operates by continuously monitoring the voltage level at the VIT pin. When the voltage falls below the selected threshold, the IC asserts the RESET pin, initiating a system reset. The reset signal remains active until the voltage rises above the threshold or the user-defined timeout period elapses.

Application Field Plans

The TPS3124J12DBVTG4 finds applications in various electronic systems where voltage monitoring and reliable reset functionality are critical. Some potential application fields include:

1. Microcontrollers: The IC ensures proper initialization of microcontroller-based systems, preventing code execution errors during power-up or brownout conditions.

2. Embedded Systems: Embedded systems often require stable voltage levels for reliable operation. The TPS3124J12DBVTG4 provides the necessary voltage monitoring and reset functionality.

3. Industrial Control Systems: In industrial control systems, voltage fluctuations can lead to system failures. The TPS3124J12DBVTG4 helps maintain stable voltage levels, ensuring uninterrupted operation.

4. Automotive Electronics: Automotive electronics demand robust voltage supervision to prevent malfunctions. The TPS3124J12DBVTG4 offers reliable voltage monitoring and reset capabilities in automotive applications.

Alternative Models

1. TPS3125J18DBVTG4: Similar to TPS3124J12DBVTG4 but with a different threshold voltage option (1.8V).
2. TPS3125J25DBVT