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.
Featured Devices
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
- Closed Loop Fan Controllers
- Open Loop Fan Controllers and Fault Detectors
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 | $1.06 |
| 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 | $1.18 |
| 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 | $1.18 |
| 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 | $1.35 |
| 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 | $1.35 |
| 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 | $1.53 | |
| 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 | $1.12 |
| 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 | $1.18 |
| 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 | $0.70 |
| 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 | $0.83 | ||
| 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 | $0.95 | ||
| 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 | $1.42 | ||
| 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 | $1.37 | |
| 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 | $1.01 | |
| 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 | $0.83 |
| 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 | $1.01 |
| 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 | $0.88 |
| 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 | $1.01 |
| 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 | $0.92 |
| 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 | $0.96 |
| 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 | $0.90 |
| 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 | $0.89 |
| 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 | $0.86 |
| 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 | $0.96 |
| 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 | $0.90 |
| 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 | $1.14 |
| 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 | $1.37 |
| 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 | $1.52 |
| 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 | $1.60 |
| 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 | $1.34 |
| 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 | $1.40 |
