标题: TC650/TC651 Data Sheet [打印本页] 作者: admin 时间: 2010-4-17 13:44 标题: TC650/TC651 Data Sheet TC650/TC651 Data Sheet
The TC650/651 are integrated temperature sensors and brushless DC fan speed controllers. The TC650/651 measure their junction temperature and control the speed of the fan based on that temperature, making them especially suited for applications in modern electronic equipment. Temperature data is converted from the on-chip thermal sensing element and translated into a fractional fan speed from 40% to 100%. A temperature selection guide in the data sheet is used to choose the low and high temperature limits to control the fan. The TC650/651 also include a single trip point over temperature alert (Tover) that eliminates the need for additional temperature sensors. In addition, the TC651 features an auto fan shutdown function for additional power savings. The TC650/651 are easy to use, and require no software overhead, and are therefore the ideal choice for implementing thermal management in a variety of systems.
Parameter Name Value
Typical Accuracy (°C) 1
Over Temp Alert yes
SM Bus NO
Predictive Fan Fault NO
Max. Supply Current (µA) 90
Max. Accuracy @ 25°C (°C) 3
Integrated Temp Sensor Yes
Fan Sense No
External Temp Input No
Auto Shutdown No
Device Description Fan Manager
Temp Range (°C) -40 to +125
Vcc Range (V) +2.8 to +5.5
Features
Digital Temperature Sensing
and Multi-Speed Fan Control
Built in Over Temperature Alert (Tover)
Temperature Proportional Fan Speed Control for Acoustic Noise Reduction
and Longer Fan Life
Pulse Width Modulation Output Drive for Cost and Power Savings
Solid State Temperature Sensing
±1o C (Typical) Accuracy from 25o C to +70o C
2.8 - 5.5V Operating Range
TC651 includes Auto Fan Shutdown
Low Operating Power: 50µA (Typ)
