TPS3808G12DBVRG4

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Consumption - Wide Supply Voltage Range - Adjustable Threshold Voltage - Precision Monitoring - Small Package Size

Package: SOT-23 (Thin Shrink Small Outline Package)

Essence: The TPS3808G12DBVRG4 is a voltage supervisor IC that monitors the power supply voltage of a system and provides a reset signal to the microcontroller or other digital devices when the voltage falls below a certain threshold.

Packaging/Quantity: The TPS3808G12DBVRG4 is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Options: 2.93V, 3.08V, 3.63V, 4.38V, 4.63V, 4.88V, 5.13V, 5.38V
• Quiescent Current: 1.5µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Output Type: Active-Low Push-Pull

Pin Configuration

The TPS3808G12DBVRG4 has a total of 5 pins:

1. GND (Ground): Connected to the ground reference of the system.
2. VDD (Supply Voltage): Connected to the positive supply voltage of the system.
3. MR (Manual Reset): An external input that can be used to force a reset condition.
4. RESET (Reset Output): Provides an active-low reset signal to the microcontroller or other digital devices.
5. N/C (No Connection): This pin is not connected and should be left unconnected.

Functional Features

• Precision Monitoring: The TPS3808G12DBVRG4 provides accurate monitoring of the power supply voltage, ensuring reliable operation of the system.
• Adjustable Threshold Voltage: The threshold voltage can be adjusted to match the specific requirements of the system.
• Power-On Reset Delay: The IC includes a built-in delay circuit to ensure that the reset signal is not asserted immediately after power-up, allowing the system to stabilize.
• Manual Reset Input: An external manual reset input allows for a forced reset condition when required.

Advantages and Disadvantages

Advantages: - Low power consumption - Wide supply voltage range - Adjustable threshold voltage - Small package size - Precision monitoring

Disadvantages: - Limited number of threshold voltage options

Working Principles

The TPS3808G12DBVRG4 operates by continuously monitoring the supply voltage. When the voltage falls below the set threshold, the reset output is asserted, indicating a power failure or an out-of-specification condition. The reset signal remains active until the supply voltage rises above the threshold voltage and stabilizes.

Detailed Application Field Plans

The TPS3808G12DBVRG4 is commonly used in various applications where reliable power supply monitoring is critical. Some of the typical application fields include:

1. Microcontrollers and Digital Processors: The IC ensures proper reset functionality during power-up and power-down sequences, preventing erratic behavior of the microcontroller or digital processor.
2. Communication Systems: It provides voltage supervision in communication systems to prevent data corruption or loss due to power supply fluctuations.
3. Industrial Control Systems: The IC is used in industrial control systems to monitor the power supply and initiate a safe shutdown in case of a fault condition.
4. Automotive Electronics: It plays a crucial role in automotive electronics, ensuring proper functioning of various systems and preventing damage due to voltage fluctuations.

Detailed and Complete Alternative Models

1. TPS3808G01DBVR: This model offers similar functionality but with a fixed threshold voltage of 2.93V.
2. TPS3808G33DBVR: It provides a fixed threshold voltage of 3.08V, suitable for applications requiring a specific voltage level.
3. TPS3808G50DBVR: This alternative model has a fixed threshold voltage of 4.88V, catering to applications with higher voltage requirements.
4. TPS3808G63DBVR: It offers a fixed threshold voltage of 5.13V, suitable for systems operating at higher voltages.

These alternative models provide options for different threshold voltage requirements, allowing designers to choose the most appropriate solution for their specific application needs.

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