EMC2103 Features
	EMC2103 Applications
	EMC2103 Block Diagram
	Data Sheet, Application Notes, Drivers and Design Tools

General Description

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 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 EMC2103 also includes a hardware programmable temperature limit and dedicated system shutdown output for thermal protection of critical circuitry.

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 only)
	Available in 12-pin, QFN Lead-Free RoHS Compliant Package (EMC2103-1 and EMC2103-3) 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 Data Sheet, Application Notes,
Drivers and Design Tools

Description	File Name	File Size	Date
EMC2103 Data Brief	2103db.pdf	223K	1/29/09
EMC2103 Data Sheet	2103.pdf	1189K	1/29/08
Evaluation Board
EVB-EMC2103    Schematic, PDF    Bill of Materials, PDF    Users Guide, PDF	evb2103sch.pdf evb2103bom.pdf evb2103user.pdf	267K 78K 517K	5/23/07 6/22/07 8/21/07
Application Notes
Application Note 10-14: Using Temperature Sensing Diodes with EMC Devices - Remote Sensors	an1014.pdf	162K	7/18/06
Application Note 12-14: Remote Thermal Sensing Diode Selection Guide	an1214.pdf	216K	9/9/05
Application Note 13-19: Resistance Error Correction	an1319.pdf	210K	11/11/05
Application Note 14-0: SMBus Temperature Sensors from SMSC in an I2C System	an140.pdf	119K	12/12/05
Application Note 16-4: Using Anti-Parallel Diode (APD) with SMSC Temperature Sensors	an164.pdf	185K	4/26/07
Other Information
Using the Adobe® Acrobat® Reader	aacrobat.html