TPS3809K33DBVR

The TPS3809K33DBVR is a voltage supervisor IC with a fixed threshold voltage of 3.3V, designed to monitor system voltages and provide reset outputs. It is commonly used in microcontroller-based systems to ensure proper power-on reset and system initialization.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• GND: Ground connection
• RESET: Reset output
• MR: Manual reset input
• VDD: Supply voltage
• NC: No connection

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the TPS3809K33DBVR IC for a visual representation.

Key Features

• Fixed Threshold Voltage: The TPS3809K33DBVR has a fixed threshold voltage of 3.3V, suitable for monitoring 3.3V systems.
• Voltage Supervision: Monitors the system voltage and provides a reset signal if the voltage falls below the specified threshold.
• Manual Reset Input: Allows external control for generating a reset signal, providing flexibility in system reset control.
• Low Quiescent Current: Consumes low power during operation, making it suitable for power-sensitive applications.
• Small Package: Available in a space-saving SOT-23 package for compact system designs.

Note: For detailed technical specifications, please refer to the TPS3809K33DBVR datasheet.

Application

• System Power-On Reset: Ideal for ensuring a proper reset sequence during system power-up.
• Microcontroller Systems: Commonly used in microcontroller-based applications to monitor and control system reset events.
• Battery-Powered Devices: Suitable for battery-powered devices requiring voltage monitoring and reset functions.

Functionality

The TPS3809K33DBVR acts as a voltage supervisor, monitoring the system voltage and generating a reset signal when necessary. It plays a crucial role in ensuring system stability and reliability.

Usage Guide

• Power Supply: Connect VDD (Pin 4) to the system supply voltage (3.3V).
• Reset Output: Use the RESET (Pin 2) signal to initiate a system reset when the monitored voltage falls below the threshold.
• Manual Reset: Connect an external signal to the MR (Pin 3) input for manual reset control if needed.

Frequently Asked Questions

Q: What is the purpose of the manual reset input (MR) pin?
A: The MR pin allows external control to trigger a reset signal, enabling manual reset functionality in the system.

Q: Is the TPS3809K33DBVR suitable for monitoring multiple voltage rails?
A: The TPS3809K33DBVR is designed to monitor a single voltage rail and provide a reset signal based on that voltage level.