National Semiconductor’s New Thermal Management Sensor

The LM95172Q’s pinpoint accuracy at high temperatures permits lower system guard bands. System engineers now can develop a reliable electronic control unit (ECU) that consistently runs at higher temperatures, allowing for optimal oil viscosity, smaller system form factor and lower weight. These elements enable increased fuel efficiency.

The LM95172Q is the industry’s first integrated 175 degrees C digital-output temperature sensor with a serial peripheral interface (SPI) and MICROWIRE bus interface. The LM95172Q is a member of National’s PowerWise family of products that enable customers to develop more energy-efficient products.

The LM95172Q is supplied in die form for mounting on hybrid circuit boards and offers temperature monitoring between -40 degrees C and 175 degrees C. The LM95172Q features a 16-bit sigma-delta analog-to-digital converter (ADC), fast conversion rate of 35 ms and high resolution of 0.008 degrees C/LSB. The device also includes a temperature switch as well as self diagnosis to ensure safe, continuous operation.

National’s automotive portfolio includes temperature sensors, data converters, audio and operational amplifiers, and power management and interface circuits. These energy-efficient products help electronic system designers reduce space, lower operating temperatures and conserve on overall power consumption.