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If your embedded design includes one or more fans, we offer a variety of fan controller ICs that will simplify your development and accelerate your time to market.

For embedded computing and PC applications, our integrated fan controllers offer built-in temperature sensors and look-up tables for setting the fan speed (PWM duty cycle) according to the measured temperature. If your system incorporates multiple fans, we offer fan speed PWM controllers that include PID closed-loop control to better maintain fan set points through the entire life of the fan. They include algorithms for spin-up and ramp-rate control, making them a good fit for networking, mass storage and server applications.

We also offer open-loop PWM fan controllers that use temperature-proportional fan speed control, making them well suited for telecommunications applications. They feature our FanSense technology to protect against fan and system failure, increase system reliability and eliminate the need for three-wire fans.

 


EMC2301

RPM-based PWM Fan Controller for One Fan

  • One PWM fan driver
  • Closed-loop or direct I2C drive
  • 0.5% Tach accuracy
 
 

EMC2305

Multiple RPM-Based PWM Fan Controller for Five Fans

  • Five PWM fan drivers
  • Closed-loop or direct I2C drive
  • Spin-up and ramp-rate control
 
 

EMC2104

Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown

  • Two PWM fan drivers
  • Five temperature monitoring channels
  • Look-up table for eight PWM-to-temperature setting

Fan Controllers

View All Parametrics
Product Status Automotive Recommended Description No Fans Drivers PWM/Linear Control No Remote Temperature Monitors Ambient Temperature Sensor Typical Accuracy Max. Accuracy Temp. Range (°) Vcc Range (V) SMBus Alert System Shutdown Voltage Monitors Packages 5K Pricing
EMC2103-1 In Production No Fan Controller with Thermal Mgt 1 PWM 1 1 ±0.5 ±1.0 -40 - 125 3.0 - 3.6 Yes Yes No 12/QFN $1.01
EMC2103-2 In Production Consider: EMC2113 No Fan Controller with Thermal Mgt 1 PWM 3 1 ±0.5 ±1.0 -40 - 125 3.0 - 3.6 Yes Yes No 16/QFN $1.12
EMC2103-4 In Production No Fan Controller with EEPROM Load 1 PWM 3 1 ±0.5 ±1.0 -40 - 125 3.0 - 3.6 Yes Yes No 16/QFN $1.12
EMC2104 In Production No Multi Fan Controller with Thermal Mgt 2 PWM 4 1 ±0.25 ±1.0 -40 - 85 3.0 - 3.6 Yes Yes Yes 20/QFN $1.29
EMC2105 In Production No Fan Controller with Thermal Mgt 1 Linear 4 1 ±0.25 ±1.0 -40 - 85 3.3 - 5.0 Yes Yes Yes 20/QFN $1.29
EMC2106 In Production No Multi Fan Controller with Thermal Mgt 2 PWM and Linear 1 ±0.25 ±1.0 -40 - 85 3.3 - 5.0 Yes Yes Yes 28/VQFN $1.46
EMC2112 In Production No Fan Controller with Thermal Mgt 1 Linear 3 1 ±0.25 ±1.0 0 - 85 3.3 - 5.0 Yes Yes No 20/QFN $1.07
EMC2113 In Production No Fan Controller with Thermal Mgt 1 PWM 3 1 ±0.5 ±1.0 -40 - 125 3.0 - 3.6 Yes Yes No 16/QFN $1.12
EMC2301 In Production No Fan Speed Controller 1 PWM 0 0 N/A N/A -40 - 125 3.0 - 3.6 Yes No N/A 8/MSOP $0.67
EMC2302 In Production No Multi-Fan Speed Controller 2 PWM N/A N/A -40 - 125 3.0 - 3.6 Yes No N/A 10/MSOP $0.79
EMC2303 In Production No Multi-Fan Speed Controller 3 PWM N/A N/A -40 - 125 3.0 - 3.6 Yes No N/A 12/QFN $0.90
EMC2305 In Production No Multi-Fan Speed Controller 5 PWM N/A N/A -40 - 125 3.0 - 3.6 Yes No N/A 16/QFN $1.35
EMC4021 In Production No Customer specific 32/VQFN Call for pricing
EMC4022 In Production No Customer specific 32/VQFN Call for pricing
View All Parametrics
Product Status Automotive Recommended Description Typical Accuracy (°) Max. Accuracy @ 25° (°) Temp. Range (°) Vcc Range (V) Max. Supply Current (µA) High/Low PWM Freq Fan Speed Table External Temp Input Integrated temp sensor SMBus compatible interface FanSense fan monitor Predictive fan fault detection/read/RPM Auto shutdown Over temp alert Packages 5K Pricing
TC652 In Production Fan Manager 1 3 -40 - +125 +2.8 - +5.5 90 Low No No Yes No Yes No No Yes 8/MSOP $1.30
TC670 In Production Predictive Fan Fault Detector N/A N/A -40 - +85 +3.0 - +5.5 150 N/A N/A No No No Yes Yes No No 6/SOT-23 $0.96
EMC2101 In Production No Programmable Single Fan Manager ±0.5 ±1.0 -40 - +125 +3.0 - +3.6 1000 High & Low Yes Yes Yes Yes No Yes Yes Yes 8/MSOP, 8/SOIC $0.79
TC642 In Production No Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 1000 Low No Yes No No Yes No No Yes 8/MSOP, 8/SOIC, 8/PDIP $0.96
TC642B In Production No Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 400 Low No Yes No No Yes No Yes Yes 8/MSOP, 8/SOIC, 8/PDIP $0.84
TC646 In Production No Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 1000 Low No Yes No No Yes No Yes Yes 8/MSOP, 8/SOIC, 8/PDIP $0.96
TC646B In Production No Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 400 Low No Yes No No Yes No Yes Yes 8/MSOP, 8/SOIC, 8/PDIP $0.88
TC647 In Production No Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 1000 Low No Yes No No Yes No No No 8/MSOP, 8/SOIC, 8/PDIP $0.91
TC647B In Production No Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 400 Low No Yes No No Yes No Yes No 8/MSOP, 8/SOIC, 8/PDIP $0.86
TC648 In Production No Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 1000 Low No Yes No No No No Yes Yes 8/MSOP, 8/SOIC, 8/PDIP $0.85
TC648B In Production No Fan Manager Depends on External Thermistor Depends on External Thermistor -40 - +85 +3.0 - +5.5 400 Low No Yes No No No No Yes Yes 8/MSOP, 8/SOIC, 8/PDIP $0.82
TC649 In Production No Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 1000 Low No No Yes No Yes No Yes No 8/MSOP, 8/SOIC, 8/PDIP $0.91
TC649B In Production No Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 400 Low No Yes No No Yes No Yes Yes 8/MSOP, 8/SOIC, 8/PDIP $0.86
TC650 In Production No Fan Manager 1 3 -40 - +125 +2.8 - +5.5 90 Low No No Yes No No No No Yes 8/MSOP $1.09
TC651 In Production No Fan Manager 1 3 -40 - +125 +2.8 - +5.5 90 Low No No Yes No No No Yes Yes 8/MSOP $1.08
TC653 In Production No Fan Manager 1 3 -40 - 125 +2.8 - +5.5 90 Low No No Yes No Yes No Yes Yes 8/MSOP $1.30
TC654 In Production No Programmable Dual Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 320 Low No Yes No Yes Yes Yes No No 10/MSOP $1.45
TC655 In Production No Programmable Dual Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 320 Low No Yes No Yes Yes Yes No No 10/MSOP $1.52
TC664 In Production No Programmable Single Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 320 Low No Yes No Yes Yes Yes No No 10/MSOP $1.28
TC665 In Production No Programmable Single Fan Manager Depends on external thermistor Depends on external thermistor -40 - +85 +3.0 - +5.5 320 Low No Yes No Yes Yes Yes No Yes 10/MSOP $1.33