Features

• Programmable Fan Control circuit
  • 4-wire fan compatible
  • High and low frequency PWM
• RPM based fan control algorithm
  • 2.5% accuracy from 500RPM to 16k RPM
  • Detects fan aging and variation
• Temperature Look-Up Table
  • Allows programmed fan response to temperature
  • Controls fan speed or PWM drive setting
  • Allows externally set temperature data to drive fan
  • Supports DTS data from CPU
• Up to Three External Temperature Channels (EMC2103-2 only)
  • Supports 45nm, 60nm, and 90nm CPU diodes
  • Automatically detects and supports CPUs requiring BJT or Transistor models
  • Resistance error correction
  • Supports discrete transistors (i.e. 2N3904)
  • 1°C accurate (60°C to 125°C)
  • 0.125°C resolution
• Hardware Programmable Thermal Shutdown Temperature
  • Cannot be altered by software
  • 65°C to 127°C Range
• Programmable High and Low Limits for all channels
• Internal Temperature Monitor
  • 2°C accuracy
  • 0.125°C resolution
• 3.3V Supply Voltage
• SMBus 2.0 Compliant
  • SMBus Alert compatible
• Two dedicated GPIOs (EMC2103-2 and EMC2103-4 only)
• Available in 12-pin, QFN Lead-Free RoHS Compliant Package (EMC2103-1) or 16-pin, QFN Lead-Free RoHS Compliant Package (EMC2103-2 and EMC2103-4)

Applications

• Notebook Computers
• Projectors
• Graphics Cards
• Industrial and Networking Equipment

EMC2103 Block Diagram