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Manufacturer Part #


MIC280 Series 3.6 V SMT Precision IttyBitty™ Thermal Supervisor - SOT-23-6

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Mfr. Name: Microchip
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Product Specification Section
Microchip MIC280-0YM6-TR - Technical Attributes
Attributes Table
Output Type: Digital
Supply Voltage: 3V to 3.6V
Operating Temp Range: -55°C to +125°C
Package Style:  SOT-23-6 (SOT-26)
Mounting Method: Surface Mount
Features & Applications
The MIC280 is a digital thermal supervisor capable of measuring its own internal temperature and that of aremote PN junction.
The remote junction may be an inexpensive commodity transistor, e.g., 2N3906, or an embedded thermal diode such as found in Intel Pentium* II/III/IV CPUs, AMD Athlon* CPUs, and Xilinx Virtex* FPGA's. A 2-wire SMBus* 2.0 compatible serial interface is provided for host communication. Remote temperature is measured with ±1°C accuracy and 9-bit to 12-bit resolution (programmable). Independent high, low, and over-temperature thresholds are provided for each zone.


  • Measures local and remote temperature
  • Highly accurate remote sensing ±1°C max., 60°C to 100°C
  • Superior noise immunity for reduced temperature guardbands
  • 9-bit to 12-bit temperature resolution for remote zone
  • Fault queues to further reduce nuisance tripping
  • Programmable high, low, and over-temperature thresholds for each zone
  • SMBus 2 compatible serial interface including device timeout to prevent bus lockup
  • Voltage tolerant I/O’s
  • Open-drain interrupt output pin - supports SMBus Alert Response Address protocol
  • Low power shutdown mode
  • Locking of critical functions to insure failsafe operation
  • Failsafe response to diode faults
  • Enables ACPI compliant thermal management
  • 3.0 V to 3.6 V power supply range
  • IttyBitty™ SOT23-6 package


  • Desktop, server and notebook computers
  • Printers and copiers
  • Test and measurement equipment
  • Thermal supervision of Xilinx Virtex FPGA's
  • Wireless/RF systems
  • Intelligent power supplies
  • Datacom/telecom cards
Pricing Section
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Factory Lead Time:
7 Weeks
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Web Price
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