EMC2103-1-KP-TR

The EMC2103 is an SMBus compliant fan controller with up to up to 3 external and 1 internal temperature channels. The fan driver can be operated using two methods each with two modes. The methods include an RPM based Fan Speed Control Algorithm and a direct PWM drive setting. The temperature monitors offer ±0.5°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 EMC2103 also includes a hardware programmable temperature limit and dedicated system shutdown output for thermal protection of critical circuitry.

• 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 and EMC2103-4 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)
  • ±0.5°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 Ran