TPS3702-Q1

The TPS3702-Q1 is a high-precision, low-power voltage detector designed for automotive and industrial applications requiring reliable power supply monitoring. It features a fixed threshold of 3.0 V with a typical hysteresis of 45 mV, ensuring stable operation in noisy environments. The device operates from a supply voltage range of 1.6 V to 5.5 V, making it suitable for a wide variety of power systems including 3.3 V and 5 V rails commonly found in automotive ECUs and embedded systems. This voltage detector incorporates an active-low output that provides open-drain functionality, allowing direct interfacing with microcontrollers or logic circuits without additional level-shifting components. Its low quiescent current—typically 3.5 µA at 3.3 V—makes it ideal for battery-powered and energy-sensitive designs where minimizing power consumption is critical. The device also includes an internal pull-up resistor, simplifying circuit design and reducing component count. Designed to meet AEC-Q100 Grade 1 qualification standards, the TPS3702-Q1 offers robust performance under harsh environmental conditions such as temperature extremes (-40°C to +125°C) and mechanical stress, ensuring reliability in automotive systems like engine control units, body electronics, and infotainment modules. It supports both positive and negative supply transitions, enabling accurate detection of power-on, power-off, and brownout events. The TPS3702-Q1 features a fast response time of less than 1 µs, which allows rapid detection of voltage deviations and immediate notification to the system controller. This quick reaction helps prevent system malfunctions or data corruption due to insufficient power levels. Additionally, the device includes built-in input filtering to reduce false triggering caused by transient noise on the supply line, enhancing overall system stability. Its compact SOT-23-5 package ensures minimal footprint on printed circuit boards, facilitating integration into space-constrained designs. The part is available in tape-and-reel packaging, supporting automated assembly processes in high-volume manufacturing environments. With its combination of precision, low power, and automotive-grade reliability, the TPS3702-Q1 serves as a dependable solution for monitoring supply voltages in safety-critical and mission-critical applications across the automotive and industrial sectors.