EMC2104
EMC2104 Dual RPM PWM fan controller with 5 temperature sensors, higher frequency support, look up table, I2C, alert
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产品信息
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
RPM based fan control algorithm
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
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
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
Programmable High and Low Limits for all channels
3.3V Supply Voltage
SMBus 2.0 Compliant
SMBus Alert compatible
Available in 20-pin QFN Package - RoHS compliant (4mm x 4mm)
Applications
Notebook Computers
Embedded Applications
Projectors
Industrial and Networking Equipment
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型号:EMC2104-BP-TR
描述:-