TPS3808G09DBVR

The TPS3808G09DBVR is a voltage supervisor integrated circuit (IC) manufactured by Texas Instruments. It is designed to monitor power supply voltages and provide a reset signal to microcontrollers and other digital devices when the supply voltage falls below a specified threshold. Here’s a detailed description of its features and specifications:

Key Features:

1. Voltage Monitoring: The TPS3808G09DBVR monitors a supply voltage and generates a reset signal when the voltage drops below a predetermined threshold. This is crucial for ensuring that digital circuits operate reliably and do not enter an undefined state during power fluctuations.

2. Reset Threshold: The device has a fixed reset threshold of 0.9V, making it suitable for a variety of low-voltage applications. This threshold is designed to ensure that the reset signal is asserted before the supply voltage drops to a level that could cause erratic behavior in connected devices.

3. Active-Low Reset Output: The reset output is active-low, meaning that it goes low (0V) when the monitored voltage is below the threshold. This output can be connected directly to the reset pins of microcontrollers or other digital logic devices.

4. Reset Timeout: The TPS3808G09DBVR includes a built-in timeout feature that holds the reset output low for a specified duration after the supply voltage returns to a valid level. This ensures that the system has stabilized before resuming normal operation.

5. Low Supply Current: The device operates with a low supply current, typically around 1 µA, which is beneficial for battery-powered applications where power efficiency is critical.

6. Wide Operating Voltage Range: The TPS3808G09DBVR can operate over a wide voltage range, typically from 1.0V to 5.5V, making it versatile for various applications.

7. Temperature Range: The IC is rated for operation over an extended temperature range, typically from -40°C to +125°C, ensuring reliability in harsh environments.

8. Small Package Size: The TPS3808G09DBVR is available in a compact SOT-23 package, which is ideal for space-constrained applications. The small footprint allows for easy integration into printed circuit boards (PCBs).

Applications:

The TPS3808G09DBVR is suitable for a variety of applications, including:

• Microcontroller and microprocessor reset circuits
• Power management systems
• Battery-operated devices
• Automotive electronics
• Industrial control systems
• Consumer electronics

Conclusion:

The TPS3808G09DBVR from Texas Instruments is a reliable and efficient voltage supervisor that provides essential reset functionality for digital circuits. Its low power consumption, wide operating voltage range, and compact package make it an excellent choice for a variety of electronic applications where voltage monitoring and reset capabilities are required.