EMC2106 Series

Catalog

DUAL CLOSED LOOP RPM LINEAR FAN CONTROLLER WITH 5 TEMP, ALERT, SHUTDWN, I2C/SMBUS 28 VQFN 5X5X0.9MM T/R ROHS COMPLIANT: YES

Part	Output Alarm	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Output Type	Supplier Device Package	Mounting Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Output Fan	Sensor Type	Function	Topology	Accuracy
Microchip Technology EMC2106-DZK-TR		85 °C	-40 °C	28-VFQFN Exposed Pad	2-Wire SMBus	28-QFN (5x5)	Surface Mount	5.5 V	3 V		Internal and External	Fan Control Temp Monitor	ADC (Sigma Delta) Comparator Register Bank Tach	2 °C

Catalog

Key Features

• * 4-wire fan compatible

• * High speed PWM (26khz)

• * Low speed PWM (9.5Hz - 2240Hz)

• * 600mA, 5V, High Side Fan Driver

• * Optional fan aging detection

• * 1mA Linear DAC Fan Driver

• * 2% accuracy from 500RPM to 16k RPM

• * Allows programmed fan response to temperature

• * 1 to 4 thermal zones to control each fan driver

• * Controls fan speed or fan drive setting

• * Allows externally generated temperature data to control fan drivers including two DTS 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

• * Three dedicated comparator outputs for External Diode 1, External Diode 2, and External Diode 3 (OVERT1#, OVERT2#, OVERT3#)

• * Up to three thermistor compatible voltage inputs

• * 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

• * 2 selectable SMBus addresses

• * SMBus Alert compatible

• * Option to load register set from external EEPROM

• * Available in 28-pin QFN package - RoHS compliant (5mm x 5mm)

• * Notebook Computers

• * Embedded Applications

• * Projectors

• * Industrial and Networking Equipment

Description

The EMC2106 is an SMBus compliant fan controller with up to five (up to 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 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 EMC2106 also includes a hardware programmable temperature limits and dedicated system shutdown output for thermal protection of critical circuitry.