LM62

LM62 2.7V, 15.6 mV/˚C, SOT-23 Temperature Sensor June 1999 LM62 2.7V, 15.6 mV/˚C SOT-23 Temperature Sensor General Description The LM62 is a precision integrated-circuit temperature sensor that can sense a 0˚C to +90˚C temperature range while operating from a single +3.0V supply. The LM62’s output voltage is linearly proportional to Celsius (Centigrade) temperature (+15.6 mV/˚C) and has a DC offset of +480 mV. The offset allows reading temperatures down to 0˚C without the need for a negative supply. The nominal output voltage of the LM62 ranges from +480 mV to +1884 mV for a 0˚C to +90˚C temperature range. The LM62 is calibrated to provide accuracies of ± 2.0˚C at room temperature and +2.5˚C/ −2.0˚C over the full 0˚C to +90˚C temperature range. The LM62’s linear output, +480 mV offset, and factory calibration simplify external circuitry required in a single supply environment where reading temperatures down to 0˚C is required. Because the LM62’s quiescent current is less than 130 µA, self-heating is limited to a very low 0.2˚C in still air. Shutdown capability for the LM62 is intrinsic because its inherent low power consumption allows it to be powered directly from the output of many logic gates. Applications n n n n n n n n n Cellular Phones Computers Power Supply Modules Battery Management FAX Machines Printers HVAC Disk Drives Appliances Key Specifications n Accuracy at 25˚C n Temperature Slope n Power Supply Voltage Range n Current Drain @ 25˚C n Nonlinearity n Output...