TC65X Fan Speed Controller Family Product Information The TC650, TC651, TC652, and TC653 are fan speed controller products with built-in temperature sensor. The TC650, TC651, TC652, and TC653 are pulse width modulation (PWM) fan speed controllers for DC brushless fans. These devices adjust the speed of the fan according to the temperature level, therefore reducing acoustic noise, minimizing power consumption, and extending fan life. Temperature data from an on-board temperature sensor is translated into a fractional speed from 40% to 100%. The TC65X family features a PWM frequency of 15Hz. These devices offer a typical accuracy of ±1°C with a low typical operating current of 50µA. The devices are fully specified from 2.8V to 5.5V over the -40°C to +125°C temperature range. A variety of features address a broad application spectrum: shutdown mode for further power savings, FanSense™ technology for fan fault detection, auto-shutdown for automatic fan shut-off, minimum fan speed for constant cooling, and overtemperature alert for overheating detection. All devices are available in small 8-pin MSOP packages. These devices are ideal for every application utilizing DC fans, especially where acoustic noise and fan reliability are very important. Applications may include computers, projectors, servers, datacom equipment, telecom equipment, power supplies, set-top boxes, fan racks, and test equipment. Features: • Temperature proportional fan speed control • FanSense™ technology protects against fan and system failure • 2.8V to 5.5V supply voltage range • Low 50µA operating current • ±1°C typical accuracy • 15Hz pulse width modulation (PWM) frequency • Shutdown mode • Built-in over-temperature alert • Temperature range: -40°C to +125°C • 8-Pin MSOP package Related Application Notes: • AN58 Suppressing Acoustic Noise in Pulse Width Modulation (PWM) Fan Speed Control Systems • AN59 Speed Error in Pulse Width Modulation (PWM) Fan Control Systems M i c r o c h i p Te c h n o l o g y I n c . • T h e E m b e d d e d C o n t r o l S o l u t i o n s C o m p a n y ® TC65X Fan Speed Controller Family Continued Additional Information: • • • • • Microchip's web site: www.microchip.com Microchip's Technical Library CD-ROM, Order No. DS00161 Analog Interface Handbook, Order No. DS00207 Product Line Card, Order No. DS00148 Analog Design Pack CD-ROM, Order No. DS51205 Related Tools: • TC650DEMO Development System • TC652DEMO Development System Product VCC Range TC650 TC651 TC652 TC653 2.8V to 5.5V 2.8V to 5.5V 2.8V to 5.5V 2.8V to 5.5V DS21453 DS21506 TC65X Fan Speed Controller Family # of Pins/ Temperature Package Maximum IQ –40°C to +125°C –40°C to +125°C –40°C to +125°C –40°C to +125°C 8MS 8MS 8MS 8MS 90µA 90µA 90µA 90µA PWM Frequency Typical Accuracy 15Hz 15Hz 15Hz 15Hz ±1°C ±1°C ±1°C ±1°C Package Key: MS = MSOP Americas Atlanta Austin – Analog Boston Boston – Analog Chicago Dallas Dayton Detroit Los Angeles Mountain View New York Rocky Mountain San Jose Toronto (770) 640-0034 (512) 345-2030 (978) 692-3848 (978) 371-6400 (630) 285-0071 (972) 818-7423 (937) 291-1654 (248) 538-2250 (949) 263-1888 (650) 968-9241 (631) 273-5305 (480) 792-7966 (408) 436-7950 (905) 673-0699 Asia /Pacific Australia China – Beijing China – Shanghai Hong Kong India Japan Korea Singapore Taiwan 61-2-9868-6733 86-10-8528-2100 86-21-6275-5700 852-2-401-1200 91-80-229-0061 81-45-471- 6166 82-2-554-7200 65-334-8870 886-2-2717-7175 Europe Denmark France Germany Germany – Analog Italy United Kingdom 45-4420-9895 33-1-69-53-63-20 49-89-627-144 0 49-89-895-650 0 39-039-65791-1 44-118-921-5869 34 Microchip Technology Inc. • 2355 W. Chandler Blvd. • Chandler, AZ 85224-6199 • (480) 792-7200 • Fax (480) 792-9210 The Microchip name and logo, and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Inc. in the U.S.A. and other countries. FanSense is a trademark of Microchip Technology Inc. All other trademarks are the property of their respective owners. Information subject to change. © 2001 Microchip Technology Inc. Printed in the U.S.A. All rights reserved. DS21625A 6/01