MIC280-7BM6 Datasheet PDF - Micrel

●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 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.

●Features

●•  Measures local and remote temperature

●•  Highly accurate remote sensing

● ±1°C max., 60°C to 100°C

●•  Superior noise immunity for reduced temperature guard

●bands

●•  9-bit to 12-bit temperature resolution for remote zone

●•  Fault queues to further reduce nuisance tripping

●•  Programmable high, low, and over-temperature thresh olds 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

●•  3.0V to 3.6V power supply range

●•  IttyBitty™ SOT23-6 package