TPS3780-Q1

The TPS3780-Q1 is a high-precision, low-power voltage detector designed for automotive and industrial applications requiring reliable power supply monitoring. It features an accurate threshold voltage with a typical accuracy of ±1.5% over temperature, ensuring consistent performance across varying environmental conditions. The device operates from a supply voltage range of 2.5 V to 5.5 V, making it suitable for both 3.3 V and 5 V systems commonly found in modern electronic designs. This voltage detector includes a built-in hysteresis of 100 mV, which prevents oscillation during transitions near the threshold level and enhances noise immunity in electrically noisy environments. Its ultra-low quiescent current of just 3.5 µA at 5 V allows for minimal power consumption, ideal for battery-powered or energy-sensitive applications. The TPS3780-Q1 also offers a fast response time of less than 1 µs, enabling rapid detection of power supply faults and timely system intervention. Available in a compact SOT-23-5 package, the device supports easy integration into space-constrained PCB layouts. It is fully qualified to AEC-Q100 Grade 1 standards, ensuring robustness for harsh automotive environments including wide temperature ranges (-40°C to +125°C) and high reliability under vibration and thermal stress. The output is open-drain, allowing flexible interfacing with microcontrollers, logic circuits, or other digital systems using external pull-up resistors. Common applications include monitoring supply rails in automotive ECUs, infotainment systems, ADAS modules, and industrial control equipment where stable power management is critical. It can also be used in consumer electronics such as portable devices and smart home systems that demand dependable voltage supervision. With its combination of precision, low power, and automotive-grade reliability, the TPS3780-Q1 serves as an efficient solution for detecting undervoltage and overvoltage conditions while minimizing system downtime and enhancing overall safety.