The EMC2104-BP-TR 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-BP-TR also includes a hardware programmable temperature limits and dedicated system shutdown output for thermal protection of critical circuitry.
Feature
- 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)
Features
Applications
- Notebook Computers
- Embedded Applications
- Projectors
- Industrial and Networking Equipment
