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Details for TC648VPA by Microchip Technology
TC648
TC648VPA
Buy Directly from Microchip Technology Inc (1339 in stock) $1.3800
PWM Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert
TC648VPA image

TC648VPA by Microchip Technology

PWM Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert
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 TC648 Supply Voltage - Supports Any Fan Voltage!
Over-Temperature Fault Detection
Automatic Shutdown Mode for "Green" Systems
Supports Low Cost NTC/PTC Thermistors
Description
The TC648 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 the VIN input furnishes the required control voltage of 1.25V to 2.65V(typical) for 0% to 100% PWM duty cycle. The TC648 can be configured to operate in either Auto-Shutdown or Minimum Speed mode. In Auto-Shutdown mode,fan operation is automatically suspended when measured temperature (VIN) is lower than a user-programmed minimum setting (VAS). The fan is automatically restarted and proportional speed control restored when VIN exceeds VAS (plus hysteresis). Operation in Minimum Speed mode is similar to Auto-Shutdown mode, except the fan is operated at a user-programmed minimum setting when measured temperature is low. An integrated Start-Up Timer ensures reliable motor start-up at turn-on, or when coming out of Shutdown mode. The over-temperature fault (OTF) is asserted when the PWM reaches 100% duty cycle, indicating a possible thermal runaway situation. The TC648 is packaged in a space-saving 8-pin plastic DIP, MSOP or 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
External Temp Input:
True
PWMFreq:
Low
Auto Shutdown:
True
Over Temp Alert:
True
Temperature Range:
0C to +85C
Alternate Descriptions
Motor Type:DC Brushless; No. of Outputs:1Outputs; Output Current:5mA; Output Voltage:4.4V; Driver Case Style:DIP; No. of Pins:8Pins; Supply Voltage Min:3V; Supply Voltage Max:5.5V; Operating Temperature Min:0°C; Product Range:- RoHS Compliant: Yes Newark Electronics
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Details for TC648VPA by Microchip Technology
TC648
TC648VPA
Buy Directly from Microchip Technology Inc (1339 in stock) $1.3800
IC PWM FAN CONTROLLER
TC648VPA image

TC648VPA by Microchip Technology

IC PWM FAN CONTROLLER
Features
3.0V to 5.5V Supply Range:
Automatic Shutdown Mode for u201cGreenu201d Syst
Efficient PWM Fan Drive
Fan Voltage Independent of TC648 Supply Voltage
Over-temperature Fault Detection
Supports any Fan Voltage
Part Information
TC648VPA image
RoHS Compliant
Description
The TC648 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 furnishes the required control voltage of 1.25V to 2.65V (typical) for 0% to 100% PWM duty cycle. The TC648 can be configured to operate in either auto-shutdown or minimum speed mode. In auto-shutdown mode, fan operation is automatically suspended when measured temperature (VIN) is lower than a user programmed minimum setting (VAS). The fan is automatically restarted, and proportional speed control restored, when VIN exceeds VAS (plus hysteresis). Operation in minimum speed mode is similar to auto-shutdown mode, with the exception that the fan is operated at a user programmed minimum setting when the mea- sured temperature is low. An integrated Start-up Timer ensures reliable motor start-up at turn-on, and when coming out of shutdown or auto-shutdown mode. The over-temperature fault output (OTF) is asserted when the PWM reaches 100% duty cycle, indicating a possible thermal runaway situation. The TC648 is available in the 8-pin plastic DIP, SOIC and MSOP packages and is available in the industrial and extended commercial temperature ranges. 1 8 2 7 3 6 4 5 TC648 GND CF VIN VAS OTF NC VDD
Specifications
Motor Type:
DC Brushless
No. of Outputs:
1Outputs
Output Current:
5mA
Output Voltage:
4.4V
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:
648
Controller Type:
PWM
Frequency:
30Hz
Operating Temperature Range:
0°C to +85°C
Output Voltage Max:
1.4V
Supply Voltage Range:
3V to 5.5V
Termination Type:
Through Hole
Alternate Descriptions
Motor Type:DC Brushless; No. of Outputs:1Outputs; Output Current:5mA; Output Voltage:4.4V; Driver Case Style:DIP; No. of Pins:8Pins; Supply Voltage Min:3V; Supply Voltage Max:5.5V; Operating Temperature Min:0°C; Product Range:- RoHS Compliant: Yes Newark Electronics
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