TC664 _ BDTIC 中国领先电子元器件代理商

TC664

The TC664 is a single PWM mode fan speed controller with FanSense™ TM technology for use with brush-less DC motors. The device allows temperature proportional speed control and therefore accomplishes lower acoustic fan noise and longer fan life. The TC664 reads the voltage provided by an external ther-mistor (or voltage output temperature sensor) and adjusts a 30% to 100% PWM duty cycle output to the fan with respect to the input temperature voltage. The PWM duty cycle can also be programmed via SMBus to allow fan speed control without the need of an external thermistor.

In normal fan operation, pulse trains are present at the SENSE pin. These pulses are used to calculate the fan RPM. The fan RPM data is used to detect a worn out, stalled, open or unconnected fan. An RPM level below the user-programmable threshold causes the TC664 to assert a logic low alert signal (FAULT). Thedefault value is 500RPM. The TC664 consumes only 0.3mA during operation and can also enter a low-power shutdown mode by setting the appropriate bit in the configuration register.

产品特性

Temperature Proportional Fan Speed for Acoustic Control and Longer Fan Life
FanSense™ Protects Against Fan Failure
Provides RPM Data
2-wire SMBus Compatible Interface
3.0V to 5.5V Supply Range
Fan Voltage Independent of Supply Voltage Supports Any Fan Voltage
Supports Any Fan Voltage
Supports Low Cost NTC/PTC Thermistors

技术参数

Parameter Name Value	Value
Device Description Programmable Single Fan Manager	Programmable Single Fan Manager
Typical Accuracy (°C) Depends on external thermistor	Depends on external thermistor
SM Bus yes	yes
Predictive Fan Fault yes	yes
Max. Supply Current (µA) 320	320
Max. Accuracy @ 25°C (°C) Depends on external thermistor	Depends on external thermistor
Fan Sense Yes	Yes
External Temp Input Yes	Yes
High/Low PWM Freq Low	Low
Temp Range (°C) -40 to +85	-40 to +85
Vcc Range (V) +3.0 to +5.5	+3.0 to +5.5

文档资料

TC664/65 Datasheet	Data Sheets	02/05/2013	521KB
Analog & Interface Guide (Volume 2)	Brochures	10/11/2005	1067KB
Quick Guide to Microchip Development Tools	Brochures	10/15/2014	11223KB
Fan Control Function Pack Design Guide	Product Line Documents	08/23/2006	162KB
Fan Management Solutions Product Overview	Product Line Documents	08/23/2006	87KB
Fan Speed Controller and Fan Fault Detector Family	Product Line Documents	05/13/2003	245KB
Analog & Interface Product Selector Guide	Product Line Card	03/21/2016	4116KB

订购型号

Part Number	Leads	Package Type	Temp Range	Packing	1+	26+	100+	1000+	5000+
TC664EUN	10	MSOP	-40C to +85C	TUBE	1.77	1.48	1.34	1.30	1.28
TC664EUNTR	10	MSOP	-40C to +85C	T/R	1.77	1.48	1.34	1.30	1.28

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