Overview of TPS3809K33DBVT from Texas Instruments

The TPS3809K33DBVT is a highly reliable, low-power supervisory circuit designed by Texas Instruments to monitor power supply and system voltages. This device is specifically engineered to ensure that electronic systems operate optimally by providing a precise voltage detection feature. Its primary application is to reset microcontrollers and other digital systems in the event of a power failure or when the supply voltage drops below a predetermined threshold.

Key Features

• Voltage Monitoring: The device monitors a fixed voltage threshold of 3.3V, which is ideal for 3.3V logic systems, ensuring that the system does not operate under conditions that could lead to unreliable performance.
• Manual Reset Input: It includes a manual reset input that allows users to initiate a system reset with an external push-button or logic signal.
• Reset Time Delay: The TPS3809K33DBVT offers a programmable time delay for the reset signal, providing designers with the flexibility to adjust the reset assertion time as per the system requirements.
• Low Quiescent Current: It features a low quiescent current of typically 9 µA, making it suitable for battery-powered and energy-efficient applications.
• Temperature Range: The device operates over a wide temperature range from -40°C to +85°C, which allows for versatility in various operating environments.
• Form Factor: It comes in a small 6-pin SOT-23 package, which is beneficial for space-constrained applications.

Applications

The TPS3809K33DBVT is ideal for a wide range of applications, including:

• Portable and battery-powered electronics
• Microcontroller systems
• Intelligent instruments
• Industrial controls
• Embedded systems

With its precise voltage monitoring and low power consumption, the TPS3809K33DBVT from Texas Instruments is an excellent choice for systems that require a reliable supervisory function to protect against power supply anomalies. Its small form factor and easy integration make it a popular choice among engineers and designers for maintaining the integrity of their electronic systems.