Product category:
Power Supply ICs and Controllers
News Release from: Micrel | Subject: MIC284 thermal supervisor
Edited by the Electronicstalk Editorial
Team on 24 January 2001
Compact thermal supervisor has fan
control
Micrel Semiconductor has developed a two-zone thermal supervisor IC for thermal management using embedded thermal diodes such as those found in Intel Corporation's Pentium III CPU.
Micrel Semiconductor has developed a two-zone thermal supervisor IC for thermal management using embedded thermal diodes such as those found in Intel Corporation's Pentium III CPU The MIC284 is part of a growing family of system and thermal management products from Micrel
This article was originally published on Electronicstalk on 5 Dec 2000 at 8.00am (UK)
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Available in 8-pin MSOP and SOIC packaging, the MIC284 features local and remote temperature measurement, I2C/SMBus compatibility, a programmable interrupt output, an overtemperature alarm output, and an address selection input.
The over-temperature output can be used as either a hardware shutdown signal or a fan control signal.
"The MIC284 leverages Micrel's unique ability to interface to a remote thermal diode using only a single IC pin", says Jim Judkins, Product Marketing Manager.
"It allowed us to pack more features into a smaller, lower-cost package.
In PC applications, the MIC284's primary end-market, cost and space are at a premium" Judkins continued.
"Micrel has created a proprietary analogue-to-digital convertor and signal processing front-end which can accomplish thermal diode measurements using only one wire and ground.
In fact, our testing has shown that our one-wire implementation is capable of accuracy and noise performance as good or better than competing two-wire implementations".
The MIC284's operating power supply current is a portable-friendly 0.35mA, and the quiescent current in shutdown mode is only 1.0uA.
Two package options are available.
In 1000-off quantities, the MIC284BM in 8-pin SOIC packaging is priced at $1.54 each, and the MSOP-08 MIC284BMM is $1.66.
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