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LM56BIMMX Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM56BIMMX Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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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 dividing 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 tempera- ture 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 Available in 8-pin SO and Mini-SO8 plastic packages Key Specifications j Power Supply Voltage 2.7V–10V j Power Supply Current 230 µA (max) j VREF 1.250V ±1% (max) j Hysteresis Temperature 5˚C j 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 01289301 01289302 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 1000 Units 3500 Units 1000 Units 3500 Units Rail Tape & Reel Rail Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Package Marking LM56BIM LM56BIM LM56CIM LM56CIM T02B T02B T02C T02C January 2006 © 2006 National Semiconductor Corporation DS012893 www.national.com |
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