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BJT/Transistor Model Temperature Measurement

The thermal diodes of many processors are actually transistors. Previous remote temperature monitoring techniques were based on modeling the thermal diode as a diode. Unfortunately, this did not compensate for real transistor behavior. As processors now push forward to smaller geometries, it becomes more important to read their on-board thermal diodes as transistors for accuracy.

The following SMSC Thermal Management devices implement BJT/Transistor Model Temperature Measurement to provide this highly accurate technology and to counter the variations specific to substrate transistors:

Beta Variation
Series Resistance
Non-Ideality Factor

These devices continue to measure traditional remote diode configurations as well.

 
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THERMAL MANAGEMENT PRODUCTS LEAD FREE
PACKAGE		 DESIGN
TOOLS		 DOWNLOAD
Fan Controllers
EMC2101 SMBus Fan Control with 1°C Accurate Temperature Monitoring 8 TSSOE3
8 SOIE3		 Info Data Sheet
PDF Size=1165K
EMC2102 RPM-Based Fan Controller with HW Thermal Shutdown 28 QFNE3 Info Data Sheet
PDF Size=914K
EMC2103 RPM-Based Fan Controller with Hardware Thermal Shutdown 12 QFNE3
16 QFNE3		 Info Data Sheet
PDF Size=1244K
EMC2104 Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown 20 QFNE3 Info Data Sheet
PDF Size=1467K
EMC2105 RPM-Based High Side Fan Controller with Hardware Thermal Shutdown 20 QFNE3 Info Data Sheet
PDF Size=1351K
EMC2106 Dual RPM-Based Linear Fan Controller with Hardware Thermal Shutdown 28 QFNE3 Info Data Sheet
PDF Size=1701K
Temperature Sensors
EMC1043 1°C Triple Temperature Sensor with Beta Compensation and Hotter of Two Zones 8 TSSOE3 Info Data Sheet
PDF Size=411K
EMC1046
EMC1047		 1°C Multiple Temperature Sensor with Beta Compensation and Hottest of Thermal Zones Supporting Up to Seven Temperatures 10 TSSOE3 Info Data Sheet
PDF Size=537K
EMC1053 1°C Triple Temperature Sensor with Resistance Error Correction and Hotter of Two Zones 8 TSSOE3 Info Data Sheet
PDF Size=405K
EMC1102 SST Compliant Hardware Monitor with Two Temperature Channels 8 TSSOE3 Info Data Brief
PDF Size=225K
EMC1103 SST Compliant Hardware Monitor with Three Temperature Channels 10 TSSOE3 Info Data Brief
PDF Size=325K
EMC1133 SST Compliant Hardware Monitor with Three Temperature Channels & Three Voltage Channels 10 TSSOE3 Info Data Brief
PDF Size=206K
EMC1152 SST Compliant Hardware Monitor with Two Temperature Channels and Five Voltage Channels 10 TSSOE3 Info Data Brief
PDF Size=206K
EMC1212 BBUS Compliant Dual Temperature Monitor with Beta Compensation 5 SOTE3 Info Data Sheet
PDF Size=591K
EMC1402 1°C Temperature Sensor with Beta Compensation 8 TSSOE3 Info Data Sheet
PDF Size=597K
EMC1403
EMC1404		 1°C Temperature Sensor with Beta Compensation 10 TSSOE3 Info Data Sheet
PDF Size=901K
EMC1422 1°C Temperature Sensor with Hardware Thermal Shutdown 8 TSSOE3 Info Data Sheet
PDF Size=592K
EMC1423
EMC1424		 1°C Temperature Sensor with Hardware Thermal Shutdown 10 TSSOE3 Info Data Sheet
PDF Size=727K
EMC1428 1°C Multiple Temperature Sensor with HW Thermal Shutdown & Hottest of Thermal Zones Supporting Eight Temperatures 16 QFNE3 Info Data Sheet
PDF Size=724K

 
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