TMP451-Q1 Datasheet | Texas Instruments

Features - Qualified for automotive applications - AEC-Q100 qualified with the following results: - Device temperature grade 1: - 40°C to 125°C ambient operating temperature range - ±1°C accuracy for local and remote diode sensors - 0.0625°C resolution for local and remote channels - 1.7-V to 3.6-V supply and logic voltage range - 27-µA operating current, 3-µA shutdown current - Series resistance cancellation - η-factor and offset correction - Programmable digital filter - Diode fault detection - Two-wire and SMBus™ serial interface - 8-pin WSON (WDFN) packages - 2.50-mm × 2.50-mm with Wettable Flanks (DQW) - 2.00-mm × 2.00-mm (DQF) 2 Applications - Automotive infotainment systems - ECU processor temperature monitoring - TCM processor temperature monitoring - BCM processor temperature monitoring - LED headlight thermal control 3 Description The TMP451-Q1 device is a high-accuracy, low-power remote temperature sensor monitor with a built-in local temperature sensor. The remote temperature sensors are typically low-cost discrete NPN or PNP transistors, or substrate thermal transistors or diodes that are integral parts of microprocessors, microcontrollers, or FPGAs. The temperature is represented as a 12-bit digital code for both the local and the remote sensors, giving a resolution of 0.0625°C. The temperature accuracy is ±1°C (maximum) in the typical operating range for the local and the remote temperature sensors. The two-wire serial interface accepts the SMBus munication protocol. Advanced features such as series resistance cancellation, programmable nonideality factor (η-factor), programmable offset, programmable temperature limits, and a programmable digital filter are bined to provide a robust thermal monitoring solution with improved accuracy and noise immunity. The TMP451-Q1 device is ideal for multi-location, high-accuracy temperature measurements in a variety of automotive sub-systems. The TMP451-Q1 is available in a Wettable Flanks WSON package that...