TC648EOA

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Details for Microchip Technology

TC648EOA

PWM FAN SPEED CONTROLLER WITH FANSENSE
Buy Directly from Microchip Technology (370 in Stock)
$0.9300 per unit
Series Information for TC648EOA - Microchip Technology

Features

  • feature
    3.0V to 5.5V Supply Range:
  • feature
    Automatic Shutdown Mode for u201cGreenu201d Syst
  • feature
    Efficient PWM Fan Drive
  • feature
    Fan Voltage Independent of TC648 Supply Voltage
  • feature
    Over-temperature Fault Detection
  • feature
    Supports any Fan Voltage

Description

IC PWM FAN SPEED CNTRL 8-SOIC
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:
SOIC
No. of Pins:
8Pins
Supply Voltage Min:
3V
Supply Voltage Max:
5.5V
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (15-Jan-2018)
Base Number:
648
Frequency:
30Hz
Input Current:
500µA
Operating Temperature Range:
-40°C to +85°C
Supply Voltage Range:
3V to 5.5V

Alternate Descriptions

Avnet America

PWM Fan Motor Speed Controller 8-Pin SOIC N Tube

Avnet America product

Microchip Technology Inc

PWM FAN SPEED CONTROLLER WITH FANSENSE