STMicroelectronics has introduced a miniature and power-efficient temperature sensor allowing portable devices to benefit from features such as intelligent thermal protection. The STTS751 digital temperature sensor is mounted on the circuit board to feedback accurate temperature data allowing the system to manage its temperature, for example, by activating a cooling fan or shutting down circuitry. The sensor has an ultra-low 50µA operating current, a power-saving 3µA standby current, and a one-shot mode that makes the device suitable for battery-powered devices. One-shot operation allows the sensor to sleep for extended periods, waking only to provide an instantaneous reading when triggered by the system. The sensor is accurate to within 1°C and communicates its temperature data via an industry-standard system-management bus interface. The sensor offers 2.25V operation from -40 to +125°C; has a conversion time of 21ms (typical, at 10bit resolution); programmable, with 10 different conversion rates and four different resolutions; and SMBus 2.0 alert response address and timeout support. The sensor is available in a choice of 6pin 2x2mm UDFN-6L leadless package or a leaded SOT23-6L package.
