> could anyone suggest me any sensorless brushless driver IC which doesn't
> need a uC to control the motor ?

Philips TDA4140 family


eg TDA5142 here

        http://www.semiconductors.philips.com/pip/TDA5142.html

TDA5140A here

        http://www.semiconductors.philips.com/pip/TDA5140A_C1.html


When I saw one of these on action almost 10 years ago it worked well BUT
started rather poorly as it didn't "know" where the motor was until it had
gained a little headway. As a consequence it oscillated around the start
point  alittle before starting up correctly. They may have sorted this out
since then with some of the variants?


        Russell McMahon

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