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Details for TC649VPA by Microchip Technology
TC649
TC649VPA
Buy Directly from Microchip Technology Inc (6970 in stock) $1.4400
PWM Fan Speed Controller with Auto-Shutdown and Fault Detection
TC649VPA image

TC649VPA by Microchip Technology

PWM Fan Speed Controller with Auto-Shutdown and Fault Detection
Features
Temperature Proportional
Fan Speed for Acoustic Control and Longer Fan Life
Efficient PWM Fan Drive
3.0V to 5.5V Supply Range Fan Voltage Independent of TC649 Supply Voltage
Supports Any Fan Voltage!
Fault Detection Circuits Protect Against Fan Failure and Aid System Testing
Automatic Shutdown Mode for "Green" Systems
Supports Low Cost NTC/PTC Thermistors
Description
The TC649 is a switch mode fan speed controller for use with brushless DC motors. Temperature proportional speed control is accomplished using pulse width modulation(PWM). A thermistor (or other voltage output temperature sensor) connected to VIN furnishes the required control voltage of 1.25V to 2.65V (typical) for 0% to 100% PWM duty cycle. The TC649 automatically suspends fan operation when measured temperature (VIN) is below a user-programmed minimum setting (VAS). An integrated Start-Up Timer ensures reliable motor start-up at turn-on, coming out of Shutdown Mode, or following a transient fault. In normal fan operation, a pulse train is present at SENSE, Pin 5. A Missing-pulse Detector monitors this pin during fan operation. A stalled, open, or unconnected fan causes the TC649 to trigger its Start-up timer once. If the fault persists, the FAULT output goes low, and the device is latched in its Shutdown Mode. See the Applications section for more information and system design guidelines. The TC649 is packaged in a space-saving 8-Pin PDIP, MSOP or a SOIC package and is available in the industrial temperature range.
Specifications
Device Description:
Fan Manager
Typical Accuracy (°C):
Depends on external thermistor
Max Accuracy @ 25°C (°C):
Depends on external thermistor
Temp. Range Max. (°C):
+85
Temp. Range. Min. (°C):
-40
Vcc Range Max. (V):
+5.5
Vcc Range Min. (V):
+3.0
Max. Supply Current (µA):
1000
Integrated temp Sensor:
True
PWMFreq:
Low
Fan Sense:
True
Auto Shutdown:
True
Temperature Range:
0C to +85C
Alternate Descriptions
FAN SPEED CONTROLLER, DC BRUSHLESS, 5mA, DIP-8; Motor Type:DC Brushless; No. of Outputs:1Outputs; Output Current:5mA; Output Voltage:-; Driver Case Style:DIP; No. of Pins:8Pins; Supply Voltage Min:3V; Supply Voltage Max:5.5V; MSL:- RoHS Compliant: Yes Newark Electronics
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Details for TC649VPA by Microchip Technology
TC649
TC649VPA
Buy Directly from Microchip Technology Inc (6970 in stock) $1.4400
IC PWM FAN SPEED CNTRL SD 8-DIP
TC649VPA image

TC649VPA by Microchip Technology

IC PWM FAN SPEED CNTRL SD 8-DIP
Features
3.0V to 5.5V Supply Range:
Automatic Shutdown Mode for u201cGreenu201d Syst
Efficient PWM Fan Drive
Fan Voltage Independent of TC649 Supply Voltage
FanSenseu2122 Fault Detection Circuits Protect Against Fan Failure and Aid System Testing
Supports any Fan Voltage
Part Information
TC649VPA image
RoHS Compliant
Description
The TC649 is a switch mode, fan speed controller for use with brushless DC fans. Temperature proportional speed control is accomplished using pulse width mod- ulation (PWM). A thermistor (or other voltage output temperature sensor) connected to the VIN input fur- nishes the required control voltage of 1.25V to 2.65V (typical) for 0% to 100% PWM duty cycle. The TC649 automatically suspends fan operation when measured temperature (VIN) is below a user programmed minimum setting (VAS). An integrated Start-up Timer ensures reliable motor start-up at turn-on, coming out of shutdown mode, auto-shutdown mode or following a transient fault. In normal fan operation, a pulse train is present at SENSE (Pin 5). The TC649 features Microchip Technology’s proprietary FanSenseTM technology for increasing system reliability. A missing pulse detector monitors this pin during fan operation. A stalled, open or unconnected fan causes the TC649 to trigger its Start-up Timer once. If the fault persists, the FAULT output goes low, and the device is latched in its shut- down mode. See Section 5.0, “Typical Applications”, for more information and system design guidelines. The TC649 is available in the 8-pin PDIP, SOIC and MSOP packages and is available in the industrial and extended commercial temperature ranges. SOIC/PDIP/MSOP 1 8 2 7 3 6 4 5 GND CF VIN VAS FAULT SENSE VDD
Specifications
Motor Type:
DC Brushless
No. of Outputs:
1Outputs
Output Current:
5mA
Output Voltage:
-
Driver Case Style:
DIP
No. of Pins:
8Pins
Supply Voltage Min:
3V
Supply Voltage Max:
5.5V
Operating Temperature Min:
0°C
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
-
SVHC:
No SVHC (15-Jan-2018)
Base Number:
649
Frequency:
30Hz
Input Current:
500µA
Operating Temperature Range:
-40°C to +85°C
Supply Voltage Range:
3V to 5.5V
Alternate Descriptions
FAN SPEED CONTROLLER, DC BRUSHLESS, 5mA, DIP-8; Motor Type:DC Brushless; No. of Outputs:1Outputs; Output Current:5mA; Output Voltage:-; Driver Case Style:DIP; No. of Pins:8Pins; Supply Voltage Min:3V; Supply Voltage Max:5.5V; MSL:- RoHS Compliant: Yes Newark Electronics
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