EMC2105-BP-TR SMSC, EMC2105-BP-TR Datasheet

EMC2105-BP-TR

Manufacturer Part Number

EMC2105-BP-TR

Description

Motor / Motion / Ignition Controllers & Drivers Closed Loop RPM Ctrl 3 Remote

Manufacturer

SMSC

Type

Controllerr

Datasheet

1.EMC2105-BP-TR.pdf (4 pages)

Specifications of EMC2105-BP-TR

Product

Fan / Motor Controllers / Drivers

Operating Supply Voltage

3.3 V

Supply Current

2 mA

Mounting Style

SMD/SMT

Package / Case

QFN-20

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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PRODUCT FEATURES

General Description

The EMC2105 is an SMBus compliant fan controller with

up to five (up to 4 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

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 EMC2105 also includes a hardware programmable

temperature limit and dedicated system shutdown

output for thermal protection of critical circuitry.

Applications

SMSC EMC2105

Notebook Computers

Embedded Applications

Projectors

Industrial and Networking Equipment

PRODUCT PREVIEW

Features

RPM based fan control algorithm

Temperature Look-Up Table

Up to Four External Temperature Channels

Up to three thermistor compatible voltage inputs

Hardware Programmable Thermal Shutdown

Programmable High and Low Limits for all channels

3.3V Supply Voltage

SMBus 2.0 Compliant

Available in 20-pin QFN Package - Lead Free RoHS

— 600mA, 5V, High Side Fan Driver

— Optional detection of aging fans

— 2% accuracy from 500RPM to 16k RPM

— Allows programmed fan response to temperature

— 1 to 4 thermal zones to control fan driver

— Controls fan speed or drive setting

— Allows externally generated temperature data to control

— Designed to support 45nm, 60nm, and 90nm CPUs

— Automatically detects and supports CPUs requiring the

— Resistance error correction

— 1°C accurate (60°C to 100°C)

— 0.125°C resolution

— Detects fan aging and variation

Temperature

— Cannot be altered by software

— 60°C to 122°C Range or 92°C to 154°C Range

— SMBus Alert compatible

compliant (4mm x 4mm)

Programmable Fan Control circuit

RPM-Based High Side

Fan Controller with

Hardware Thermal

Shutdown

EMC2105

fan drivers including two DTS channels

BJT or Transistor models

Revision 1.78 (04-21-09)

Data Brief

Related parts for EMC2105-BP-TR

EMC2105-BP-TR Summary of contents

Page 1

... PRODUCT FEATURES General Description The EMC2105 is an SMBus compliant fan controller with up to five ( 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 drive setting ...

Page 2

... Revision 1.78 (04-21-09) RPM-Based High Side Fan Controller with Hardware Thermal Shutdown ORDER NUMBER: PACKAGE 20 pin QFN (Lead-Free Single High Side Fan driver external RoHS compliant) diode measurement channels, one Critical / Thermal Shutdown input REEL SIZE IS 4,000 PIECES 2 PRODUCT PREVIEW FEATURES SMSC EMC2105 ...

Page 3

... Thermal Shutdown Logic Mux Temp Limit 11 bit Σ Δ Registers ADC Temp Registers Configuration Lookup Table / RPM Control * denotes multiple pin functions Figure 1 EMC2105 Block Diagram 3 PRODUCT PREVIEW SMCLK SMBus SMDATA Slave ALERT# Protocol VREF* Reference GPIO1* GPIO Revision 1.78 (04-21-09) ...

Page 4

... Package Outline QFN 20-Pin 4mm x 4mm Figure 2 EMC2105 20-Pin 4x4mm QFN Package Outline and Parameters Revision 1.78 (04-21-09) RPM-Based High Side Fan Controller with Hardware Thermal Shutdown 4 PRODUCT PREVIEW SMSC EMC2105 ...

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