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MIC280

Microchip
Part Number MIC280
Manufacturer Microchip
Description Precision IttyBitty Thermal Supervisor
Published Jan 22, 2024
Detailed Description MIC280 Precision IttyBitty Thermal Supervisor Features • Measures Local and Remote Temperature • Highly Accurate Remote...
Datasheet PDF File MIC280 PDF File

MIC280
MIC280

Overview
MIC280 Precision IttyBitty Thermal Supervisor Features • 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 Overtemperature Thresholds for Each Zone • SMBus 2.
0-Compatible Serial Interface Including Device Timeout to Prevent Bus Lockup • Voltage-Tolerant I/Os • Open-Drain Interrupt Output Pin Supports SMBus Alert Response Address Protocol • Low Power Shutdown Mode • Locking of Critical Functions to Ensure Failsafe Operation • Failsafe Response to Diode Faults • Enables ACPI-Compliant Thermal Management • 3.
0V to 3.
6V Power Supply Range • Available in IttyBitty SOT23-6 Package Applications • Desktop, Server, and Notebook Computers • Printers and Copiers • Test and Measurement Equipment • Thermal Supervision of Xilinx Virtex FPGAs • Wireless/RF Systems • Intelligent Power Supplies • Datacom/Telecom Cards General Description The MIC280 is a digital thermal supervisor capable of measuring its own internal temperature and that of a remote PN junction.
The remote junction may be an inexpensive commodity transistor (e.
g.
, 2N3906) or an embedded thermal diode such as those found in Intel Pentium® II/III/IV CPUs, AMD Athlon® CPUs, and Xilinx Virtex® FPGAs.
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 overtemperature thresholds are provided for each zone.
The advanced integrating A/D converter and analog front-end reduce errors due to noise for maximum accuracy and minimum guardbanding.
The interrupt output signals temperature events to the host, including data-ready and diode faults.
Critical device settings can be locked to prevent changes and ensure failsafe operation.
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