TPS3808G18DRVR

Overview

Category: Integrated Circuits (ICs)

Use: Voltage Supervisors

Characteristics: - Low Power Consumption - Wide Supply Voltage Range - Adjustable Threshold Voltage - Precision Monitoring - Reset Output Delay Time - Manual Reset Input - Power-On Reset Generator - Watchdog Timer

Package: SOT-23-6

Essence: The TPS3808G18DRVR is a voltage supervisor IC that monitors the power supply voltage of a system and provides a reset signal to the microcontroller or other devices when the voltage falls below a certain threshold.

Packaging/Quantity: The TPS3808G18DRVR is available in a reel packaging with 3000 units per reel.

Specifications

• Supply Voltage Range: 1.6V to 6.5V
• Threshold Voltage Options: 1.8V, 2.5V, 3V, 3.3V, 5V
• Reset Output Active-Low Voltage: 0.4V (max)
• Reset Output Delay Time: 200ms (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The TPS3808G18DRVR has a total of six pins arranged as follows:

```

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| | --| VDD GND |-- Pin 1: Ground (GND) --| MR RST |-- Pin 2: Manual Reset Input (MR) --| VIT VDD |-- Pin 3: Supply Voltage (VDD) --| RST GND |-- Pin 4: Reset Output (RST) --| VTH GND |-- Pin 5: Threshold Voltage (VTH) --| GND GND |-- Pin 6: Ground (GND) |___________| ```

Functional Features

1. Voltage Monitoring: The TPS3808G18DRVR continuously monitors the supply voltage and compares it with the threshold voltage set by the user.
2. Reset Signal Generation: When the supply voltage falls below the threshold voltage, the TPS3808G18DRVR generates a reset signal to initiate a system reset.
3. Manual Reset Input: The manual reset input pin allows the user to manually trigger a system reset.
4. Power-On Reset Generator: The TPS3808G18DRVR includes a power-on reset generator that ensures a proper system initialization during power-up.
5. Watchdog Timer: The integrated watchdog timer feature helps detect and recover from software or hardware failures.

Advantages and Disadvantages

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

Disadvantages: - Limited number of threshold voltage options

Working Principles

The TPS3808G18DRVR operates by comparing the supply voltage with the threshold voltage set by the user. If the supply voltage drops below the threshold voltage, the IC generates a reset signal to initiate a system reset. The manual reset input allows the user to manually trigger a reset if required. The power-on reset generator ensures proper system initialization during power-up. The integrated watchdog timer helps detect and recover from software or hardware failures.

Detailed Application Field Plans

The TPS3808G18DRVR is commonly used in various applications where reliable voltage monitoring and system reset functionality are required. Some potential application fields include:

1. Embedded Systems: The IC can be used in microcontroller-based embedded systems to ensure proper system operation and prevent data corruption during power fluctuations.
2. Industrial Automation: The TPS3808G18DRVR finds applications in industrial automation systems to monitor and reset critical components in case of voltage drops or failures.
3. Power Supply Units: It can be integrated into power supply units to provide voltage monitoring and reset functionality, ensuring stable operation and protection against voltage fluctuations.
4. Automotive Electronics: The IC is suitable for automotive electronics applications, such as engine control units (ECUs), where reliable voltage monitoring and system reset are crucial for safe and efficient operation.

Detailed and Complete Alternative Models

1. TPS3808G01: Similar to TPS3808G18DRVR but with a fixed threshold voltage of 1.8V.
2. TPS3808G25: Similar to TPS3808G18DRVR but with a fixed threshold voltage of 2.5V.
3. TPS3808G30: Similar to TPS3808G18DRVR but with a fixed threshold voltage of 3V.
4. TPS3808G33: Similar to TPS3808G18DRVR but with a fixed threshold voltage