Fan Controller 16-Pin QFN EP T/R

The EMC2113 is an SMBus compliant fan controller. 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 EMC2113 includes a temperature monitor that measures up to three (3) external diodes and the internal diode. 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 device includes high and low limits for all temperature channels as well as a hardware set critical temperature limit. This hardware set limit drives a dedicated system shutdown pin.

• 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 Range
• Programmable High and Low Limits for all channels
• Internal Temperature Monitor
  • ±1°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 RoHS Compliant Package (EMC2103-1) or 16-pin, QFN RoHS Compliant Package (EMC2103-2 and EMC2103-4)