TPS3809I50DBVTG4 Voltage Supervisor by Texas Instruments

The TPS3809I50DBVTG4 is a high-precision voltage supervisor designed to monitor power supplies in digital systems. Manufactured by Texas Instruments, this device is an integral component for ensuring system reliability and robustness by providing a simple and effective power-on reset control. The TPS3809I50DBVTG4 is particularly suitable for battery-powered electronics, microcontrollers, and other digital systems that require a stable and reliable startup.

This voltage supervisor features a fixed-sense threshold voltage of 5.0V, which makes it ideal for 5V power supply applications. Its low current consumption of only 9µA (typical) helps to minimize the power drain on the system, making it an energy-efficient solution for portable and power-sensitive applications.

The TPS3809I50DBVTG4 comes in a compact SOT-23 package, which is highly valued for space-constrained designs. The device offers a manual reset input, enabling the system to be reset on-demand. Additionally, it provides a reset time delay, which can be programmed via an external capacitor, allowing designers to customize the reset de-assertion to match specific system requirements.

Key features of the TPS3809I50DBVTG4 include:

• Supply voltage supervision range: 2.5V to 6.0V
• Fixed threshold voltage: 5.0V
• Low supply current: 9µA (typical)
• Programmable delay time via external capacitor
• Manual reset input
• Watchdog timer (selectable by part number)
• Temperature range: -40°C to +125°C
• Small SOT-23 package

Applications for the TPS3809I50DBVTG4 include a wide range of products such as personal electronics, computers, servers, and industrial systems where a precise monitoring of the power supply voltage is critical to ensure the proper function of the system. The device's ability to provide a reliable reset signal upon power-up, brown-out, or manual reset makes it a versatile and essential component in maintaining the integrity of digital systems.

Overall, the TPS3809I50DBVTG4 from Texas Instruments is a robust solution for power management and supervision, providing designers with a reliable and easy-to-implement component that enhances the stability and performance of their electronic systems.