EMC2113 Series

Catalog

RPM BASED SINGLE FAN CONTROLLER WITH 4 TEMP INPUTS AND SHUTDWN, I2C/SMBUS 16 QFN 4X4X0.9MM T/R ROHS COMPLIANT: YES

Part	Package / Case	Voltage - Supply	Mounting Type	Topology	Output Type	Output Alarm	Sensor Type	Accuracy	Supplier Device Package	Function	Output Fan
Microchip Technology EMC2113-1-AP-TR	16-VQFN Exposed Pad	3.3 V	Surface Mount	ADC (Sigma Delta) Multiplexer Register Bank	SMBus		Internal and External	1 °C	16-QFN (4x4)	Fan Control Temp Monitor

Catalog

Key Features

• * 4-wire fan compatible

• * Both Low and High frequency PWM

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

• * Automatic Tachometer feedback

• * Controls fan speed or PWM drive setting

• * Eight steps that incorporate up to four temperature zones simultaneously (user selectable)

• * Supports forced DTS or standard temperature data

• * Allows external PWM input (150Hz to 40kHz)

• * Supports transistor model for 90nm - 45nm Intel CPUs

• * Resistance Error Correction and Beta Compensation

• * 1°C accurate (60°C to 125°C)

• * 0.125°C resolution

• * Programmable High and Low limits

• * Cannot be altered by software

• * 65°C to 127°C Range

• * Dedicated system shutdown interrupt pin

• * ±1°C accuracy

• * 0.125°C resolution

• * 3.3V Supply Voltage

• * Open drain interrupt pin

• * SMBus Alert compatible

• * Selectable SMBus Address via pull-up resistor and ADDR\_SEL pin

• * Block Read and Write

• * Available in 16-pin 4mm x 4mm QFN RoHS Compliant package

• * Notebook Computers

• * Projectors

• * Graphics Cards

• * Industrial and Networking Equipment

Description

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 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 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. Finally, the device includes an open-drain, active low interrupt pin to flag temperature or fan control errors.