TC1047/TC1047A Precision Temperature-to-Voltage Converter Features General Description Supply Voltage Range: The TC1047 and TC1047A are linear voltage output - TC1047: 2.7V to 4.4V temperature sensors whose output voltage is directly proportional to the measured temperature. The - TC1047A: 2.5V to 5.5V TC1047 and TC1047A can accurately measure Wide Temperature Measurement Range: temperature from -40C to +125C. With the TC1047, o o --40 C to +125 C the supply voltage can vary between 2.7V and 4.4V. High Temperature Converter Accuracy: The power supply range of the TC1047A is from 2.5V o - 2 C, Max, at 25C to 5.5V. Linear Temperature Slope: 10 mV/C (typ.) The output voltage range for these devices is typically Available in 3-Pin SOT-23B Package 100 mV at -40C, 500 mV at 0C, 750 mV at +25C and 1.75V at +125C. A 10 mV/C voltage slope output Very Low Supply Current: response allows for a predictable temperature -35 A Typical measurement over a wide temperature range. The TC1047 and TC1047A are packaged in 3-pin SOT-23B Applications packages, making them ideal for space-critical applications. Cellular Phones Power Supply Thermal Shutdown Package Type Temperature-Controlled Fans (NOTE) Temperature Measurement/Instrumentation 3-Pin SOT-23B Temperature Regulators V SS Consumer Electronics 3 Portable Battery-Powered Equipment Block Diagram TC1047/1047A V = 2.5V to 5.5V DD PIC Microcontroller 2 1 V DD V V DD OUT A/D Note: 3-Pin SOT-23B is equivalent to JEDEC TO-236 TC1047A Converter V SS 2001-2012 Microchip Technology Inc. DS21498D-page 1TC1047/TC1047A *Stresses above those listed underAbsolute Maximum Rat- 1.0 ELECTRICAL ing may cause permanent damage to the device. These are CHARACTERISTICS stress ratings only and functional operation of the device at these or any other conditions above those indicated in the Absolute Maximum Ratings* operation sections of the specifications is not implied. Expo- sure to Absolute Maximum Rating conditions for extended Supply Voltage ......................................................+7V periods may affect device reliability. Voltage on Any Pin with Respect to Supplies: ..................................................V -0.3 to V +0.3V SS DD Operating Temperature ......................-40C to +125C Storage Temperature Range ..............-55C to +150C ELECTRICAL CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, these specifications apply for the entire supply voltage range and for T = -40C to +125C. A Parameters Sym Min Typ Max Units Conditions Supply Voltage V 2.7 4.4 V TC1047 DD 2.5 5.5 V TC1047A Supply Current, Operating I 35 60 A Q Average Slope of Output Voltage A 10 mV/C V Temperature Accuracy TMP -2 0.5 +2 C T = 25C ACY A -3 0.5 +3 C T = +125C A 1.0 C T = -40C A Output Voltage V 100 mV T = -40C OUT A 730 750 770 mV T = 25C A 1720 1750 1780 mV T = +125C A Output Source and Sink Current I 100 A OUT TEMPERATURE CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, V = +2.3V to +5.5V and V = GND. DD SS Parameters Sym Min Typ Max Units Conditions Temperature Ranges Specified Temperature Range T -40 +85 C A Operating Temperature Range T -40 +125 C Note 1 A Storage Temperature Range T -65 +150 C A Thermal Package Resistances Thermal Resistance, 3L-SOT-23B 336 C/W JA Note 1: The TC1047/TC1047A operate over this extended temperature range, but with reduced performance. In any case, the Junction Temperature (T ) must not exceed the Absolute Maximum specification of +150C. J DS21498D-page 2 2001-2012 Microchip Technology Inc.