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LM56CIMM bảng dữ liệu(PDF) 1 Page - National Semiconductor (TI) |
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LM56CIMM bảng dữ liệu(HTML) 1 Page - National Semiconductor (TI) |
1 / 13 page LM56 Dual Output Low Power Thermostat General Description The LM56 is a precision low power thermostat. Two stable temperature trip points (V T1 and VT2) are generated by divid- ing down the LM56 1.250V bandgap voltage reference using 3 external resistors. The LM56 has two digital outputs. OUT1 goes LOW when the temperature exceeds T1 and goes HIGH when the the temperature goes below (T1–T HYST). Similarly, OUT2 goes LOW when the temperature exceeds T2 and goes HIGH when the temperature goes below (T2–T HYST). THYST is an internally set 5˚C typical hysteresis. The LM56 is available in an 8-lead Mini-SO8 surface mount package and an 8-lead small outline package. Applications n Microprocessor Thermal Management n Appliances n Portable Battery Powered 3.0V or 5V Systems n Fan Control n Industrial Process Control n HVAC Systems n Remote Temperature Sensing n Electronic System Protection Features n Digital outputs support TTL logic levels n Internal temperature sensor n 2 internal comparators with hysteresis n Internal voltage reference n Currently available in 8-pin SO plastic package n Future availability in the 8-pin Mini-SO8 package Key Specifications n Power Supply Voltage 2.7V–10V n Power Supply Current 230 µA (max) n V REF 1.250V ±1% (max) n Hysteresis Temperature 5˚C n Internal Temperature Sensor Output Voltage (+6.20 mV/˚C x T) +395 mV n Temperature Trip Point Accuracy: LM56BIM LM56CIM +25˚C ±2˚C (max) ±3˚C (max) +25˚C to +85˚C ±2˚C (max) ±3˚C (max) −40˚C to +125˚C ±3˚C (max) ±4˚C (max) Simplified Block Diagram and Connection Diagram Order Number LM56BIM LM56BIMX LM56CIM LM56CIMX LM56BIMM LM56BIMMX LM56CIMM LM56CIMMX NS Package Number M08A M08A M08A M08A MUA08A MUA08A MUA08A MUA08A SOP-8 SOP-8 SOP-8 SOP-8 MSOP-8 MSOP-8 MSOP-8 MSOP-8 Transport Media 2500 Units 2500 Units 3500 Units 3500 Units Rail Tape & Reel Rail Tape & Reel Rail Tape & Reel Rail Tape & Reel Package Marking LM56BIM LM56BIM LM56CIM LM56CIM T02B T02B T02C T02C DS012893-1 DS012893-2 April 2000 © 2000 National Semiconductor Corporation DS012893 www.national.com |
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