EMC2104
The EMC2104 is an SMBus compliant fan controller with up to five (4 external and 1 internal) temperature channels. The fan drivers can be operated using two methods each with two modes. The methods include an RPM based Fan Speed Control Algorithm and a direct fan drive setting. The modes include manually programming the desired settings or using the internal programmable temperature look-up table to select the desired setting based on measured temperature.
The temperature monitors offer 1°C accuracy (for external diodes) with sophisticated features to reduce errors introduced by series resistance and beta variation of substrate thermal diode transistors commonly found in processors.
The EMC2104 also includes a hardware programmable temperature limits and dedicated system shutdown output for thermal protection of critical circuitry.
Features- Two Programmable Fan Control circuits
4-wire fan compatible
High speed PWM (26khz)
Low speed PWM (9.5Hz - 2240Hz)
Optional detection of aging fans
- 4-wire fan compatible
- High speed PWM (26khz)
- Low speed PWM (9.5Hz - 2240Hz)
- Optional detection of aging fans
- RPM based fan control algorithm
2% accuracy from 500RPM to 16k RPM
- 2% accuracy from 500RPM to 16k RPM
- Temperature Look-Up Table
Allows programmed fan response to temperature
1 to 4 thermal zones to control each fan driver
Controls fan speed or drive setting
Allows externally generated temperature data to control fan drivers including two DTS channels
- Allows programmed fan response to temperature
- 1 to 4 thermal zones to control each fan driver
- Controls fan speed or drive setting
- Allows externally generated temperature data to control fan drivers including two DTS channels
- Up to Four External Temperature Channels
Designed to support 45nm, 60nm, and 90nm CPUs
Automatically detects and supports CPUs requiring the BJT or Transistor models
Resistance error correction
1°C accurate (60°C to 100°C)
0.125°C resolution
Detects fan aging and variation
- Designed to support 45nm, 60nm, and 90nm CPUs
- Automatically detects and supports CPUs requiring the BJT or Transistor models
- Resistance error correction
- 1°C accurate (60°C to 100°C)
- 0.125°C resolution
- Detects fan aging and variation
- Up to three thermistor compatible voltage inputs
- Hardware Programmable Thermal Shutdown Temperature
Cannot be altered by software
60°C to 122°C Range or 92°C to 154°C Range
- Cannot be altered by software
- 60°C to 122°C Range or 92°C to 154°C Range
- Programmable High and Low Limits for all channels
- 3.3V Supply Voltage
- SMBus 2.0 Compliant
SMBus Alert compatible
- SMBus Alert compatible
- Available in 20-pin QFN Package - RoHS compliant (4mm x 4mm)
- Notebook Computers
- Embedded Applications
- Projectors
- Industrial and Networking Equipment
| Parameter|
Parameter Name
Value
| Value | |
comments
Multi Fan Controller with Thermal Mgt
|
Multi Fan Controller with Thermal Mgt
| |
# Fans Drivers
2
|
2
| |
PWM/Linear Control
PWM
|
PWM
| |
# Remote Temperature Monitors
4
|
4
| |
Ambient Temperature Sensor
1
|
1
| |
Typical Accuracy
±0.25
|
±0.25
| |
Max Accuracy
±1.0
|
±1.0
| |
Maximum Temperature Range
-40 to 85
|
-40 to 85
| |
Vcc Range (V)
3.0 to 3.6
|
3.0 to 3.6
| |
SMBus Alert
Yes
|
Yes
| |
System Shutdown
Yes
|
Yes
| |
Voltage Monitors
Yes
|
Yes
|
|
Documents
Ordering Information
| Part Number | Leads | Package Type | Temp Range | Packing | 1+ | 26+ | 100+ | 1000+ | 5000+ |
|---|
| EMC2104-BP-TR | 20 | QFN | -40C to +85C | T/R | 1.79 | 1.49 | 1.35 | 1.31 | 1.29 |
Similar Devices
RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| EMC2104-BP-TR | 0.043100 | 0.212121 | 20 | QFN | 4x4x0.9mm | Matte Tin | e3 |  |  |
