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Target Applications

End Markets

Intelligent Thermal Management and Fan Control SolutionsWith almost a decade of experience in designing thermal management solutions for industry-leading companies in the computing and consumer markets, SMSC offers a breadth of expertise and an extensive product offering in temperature measurement and fan control. Employing the latest industry concepts such as Resistance Error Correction, the transistor model with Beta Compensation and revolutions per minute (RPM) fan drive for fan speed maintenance, our solutions increasingly improve measurement accuracy and save engineering time.

■ Flat Screen TVs (LCD, plasma)■ Tablet PCs■ Network Switches■ Routers■ PCs

■ Servers■ Power Supplies■ Copiers■ Fax Machines■ Printers

■ Mobile Phones■ Mobile Devices■ Smart Batteries■ Business/Home Projectors■ Embedded Applications

Thermal ManagementProduct Line Overview

Consumer Electronics Networking/ Telecommunications Computing

Office Equipment Mobile Devices

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2

TRAN

SIST

OR B

ETA

INJECTED CURRENT INTO TRANSISTOR

MEA

SURE

D

ACTUAL TEMPERATURE

ANTI-PARALLEL DIODES

RESISTANCE ERROR

IDEALITY FACTOR ERROR

BETA VARIATION IN SUBSTRATE DIODES

Traditional Beta

Advanced ProcessorBeta with Variation

IL IH

+T Error

Perfect Reading

MEA

SURE

D

ACTUAL TEMPERATURE

+T Error

-T Error

Perfect Reading

1

2

3

4

5

VDD

DP1

DN1

DP2/DN3

DN2/DP3

SMCLK

SMDATA

ALERT

THERM

GND

EMC1414

10

9

8

7

6

Temperature Sensors■ SMSC temperature sensors employ highly accurate measurement techniques allowing for 1ºC accuracy.

■ Several special functions, such as Resistance Error Correction and Beta Compensation, minimize measurement errors. This reduces engineering time normally spent on calibration and characterization.

■ Each sensor is differentiated in its class by unique features such as Anti-parallel Diodes, which allow three sensors in a two- sensor package.

Temperature Sensor Technologies ■ Resistance Error Correction - This automatically corrects for series resistance effects that can occur for trace or substrate resistance. Without correction, four inches of trace metal will add 0.6ºC error to a temperature measurement. This technology allows designers to spend less engineering time on new board layouts.

■ Anti-Parallel Diodes - A first-to-market feature, this unique configuration allows two remote temperature monitors to occupy two pins. The EMC1414 extends the common dual sensor footprint to three temperature monitors.

■ Ideality Configuration - Developed by SMSC, Ideality Configuration compensates for the common error effect present in substrate diodes and discrete transistors. Without this configuration, the ideality effect can create a spreading error over temperatures as shown in the diagram below. Ideality Configuration improves BOM flexibility while maintaining accuracy.

■ Hottest of Zones - A special register configured to report the hottest of several temperature readings. This implementation makes it simple to poll all the temperatures in applications looking for the same trip point among all measurements.

■ Beta Compensation - This feature is also known as using the Bipolar Junction Transistor (BJT) or transistor model for temperature measurement. Injected current is used to measure the temperature of a transistor; however, error in measurement occurs when forward gains or betas change over temperature and injected currents. Beta Compensation offsets these small transistor geometry effects commonly present in substrate diodes of CPUs, GPUs and ASICs.

■ Digital Filter - This feature reduces the effect of noise and temperature spikes on the system or thermal sensor. The External Diode Channel uses a programmable digital filter. This filter can be configured as Level 1, Level 2 or Disabled.

3

Temperature Sensor Support ResourcesPlease visit smsc.com for a complete listing of temperature sensor support resources

Which SMSC Temperature Sensor is Right for Your Design?

PART NUMBER EMC1001 EMC1033 EMC1043 EMC1053 EMC1063 EMC1412 EMC1422

Package 6-pin SOT 8-pin MSOP,8-pin SOIC

8-pin MSOP 8-pin MSOP 8-pin MSOP 8-pin MSOP, 8-pin TFDN*

8-pin MSOP

Operating Temperature -20 to 125ºC -40 to 125ºC -20 to 85ºC -20 to 85ºC -20 to 85ºC -40 to 125ºC -40 to 125ºC

Power Supply 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V

SMBus 2.0 Support • • • • • • •

Remote Temp Monitors 2 2 2 2 1 1

Remote Temp AccuracyN/A

+/- 0.55ºC (TYP)+/- 1ºC (MAX)

+/- 0.265ºC (TYP)+/- 1ºC (MAX)

+/- 1ºC (MAX)+/- 0.267ºC (TYP)

+/- 1ºC (MAX)+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

Ambient Temp Monitor • • • • • • •

Ambient Temp Accuracy +/- 0.5ºC (TYP)+/- 1.5ºC (MAX)

+/- 1ºC (TYP)+/- 3ºC (MAX)

+/- 1ºC (TYP)+/- 3ºC (MAX)

+/- 1ºC (TYP)+/- 3ºC (MAX)

+/- 1ºC (TYP)+/- 3ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

Temp Interrupt/SMBus Alert 2 2 2 1

Resistance Error Correction • • • • • •

Ideality Configuration • • • • • •

Beta Compensation/BJT Support • • • •

System Shutdown •

Digital Filter • •

Comments Anti-parallelDiodes

Power-up for Intel®

Microprocessor, Hotter of Two Zones

Power-up for Embedded Apps,

Hotter of Two Zones

Power-up for AMD uP, Hotter of Two Zones

PART NUMBER EMC1413 EMC1423 EMC1414 EMC1424 EMC1046 EMC1047 EMC1428

Package 10-pin MSOP,10-pin TDFN*

10-pin MSOP 10-pin MSOP,10-pin TDFN*

10-pin MSOP 10-pin MSOP 10-pin MSOP 10-pin MSOP

Operating Temperature -40 to 125ºC -40 to 125ºC -40 to 125ºC -40 to 125ºC -40 to 125ºC -40 to 125ºC -40 to 125ºC

Power Supply 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V

SMBus 2.0 Support • • • • • • •

Remote Temp Monitors 2 2 2 3 5 6 7

Remote Temp Accuracy +/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

Ambient Temp Monitor • • • • • • •

Ambient Temp Accuracy +/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

Temp Interrupt/SMBus Alert 2 1 2 1 1

Resistance Error Correction • • • • • • •

Ideality Configuration • • • •

Beta Compensation/BJT Support

• • • • • • •

System Shutdown • • •

Digital Filter • • • • • • •

Comments Anti-parallelDiodes

Anti-parallelDiodes

Anti-parallel Diodes, Hottest of Zones

Anti-parallel Diodes, Hottest of Zones

Anti-parallel Diodes, Hottest of Zones

*SMSC’s TFDN package option is 39% smaller than the MSOP package.

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4

Fan Controllers■ SMSC designs thermal management solutions for most of the top-tier PC vendors worldwide.

■ SMSC’s fan control ICs provide additional reliability to a system’s thermal management by shifting the need for constant supervision by the microprocessor. Once configured, alerts bring only those events requiring action to the attention of the host processor.

■ Lower acoustic noise can be attained with an SMSC fan control IC. Fan spin up noise reduction, fan speed ramp rate limiting and tracking fan speed to temperature can all be done without extensive software overhead, development or constant processing. This reduces design time, prototype validation time and time-to-market.

■ The use of fan controllers shortens development time compared to microcontroller software solutions. Real-time fan control from a microcontroller is not easily programmed and often results in longer development cycles.

PART NUMBER EMC1438 EMC1501 EMC1072 EMC1073 EMC1074

Package 16-pin QFN 8-pin DFN 8-pin MSOP,8-pin TDFN*

10-pin MSOP,10-pin TDFN*

10-pin MSOP,10-pin TDFN*

Operating Temperature -40 to 125ºC -20 to 125ºC -40 to 125ºC -40 to 125ºC -40 to 125ºC

Power Supply 3.3V 1.8V, 2.5V, 3.3V 3.3V 3.3V 3.3V

SMBus 2.0 Support • • • • •

Remote Temp Monitors 7 1 2 3

Remote Temp Accuracy +/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

Ambient Temp Monitor • • • • •

Ambient Temp Accuracy +/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.5ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

+/- 0.25ºC (TYP)+/- 1ºC (MAX)

Temp Interrupt/SMBus Alert 1 1 2 2 2

Resistance Error Correction •

Ideality Configuration • • •

Beta Compensation/BJT Support

•

System Shutdown •

Digital Filter • • • •

Comments Anti-parallel Diodes, Hottest of Zones, STANDBY pin

Integrated 2k bit EEPROM JEDEC TSE2002av

Supports 2N3904 and AMD diodes

Supports 2N3904 and AMD diodes

Anti-parallel Diodes, Supports 2N3904 and

AMD diodes

Fan Controller Technologies■ High-Frequency Pulse Width Modulation (PWM) - SMSC fan control employs low and high (>18kHz) frequency fan drive signals. Levels above 18kHz are compatible with four wire fans and above what a human ear can detect as switching noise.

■ Fan Speed Ramp Rate Control - This limits quick changes in fan speed. Sudden increases in fan speed are more easily detected as audible noise.

■ Multi-Temperature Control - One fan can be controlled by up to three temperature measurement zones, centralizing control for greater accuracy.

■ RPM Closed-Loop Control with PID - By measuring the fan speed with a closed-loop, the speed can be maintained over the life of the product. This is essential because an aging fan will change its response to a given drive signal or a change in system back-pressure over time. This minimizes fan to fan variations that are present in open-loop control systems. The effect is to maintain a constant cooling level for a given temperature. PID (Proportional, Integral, Derivative) Control can reduce fan speed over/under shoot.

LINEAR FAN CONTROL

SPIN UP

HYSTERESIS TEMPERATURE

MAX

MIN

PWMDUTY

CYCLE

PWM MAY BEAT MIN

MIN MAX

Which SMSC Temperature Sensor is Right for Your Design? (continued)

*SMSC’s TFDN package option is 39% smaller than the MSOP package.

5

*Diagrams are for illustrative purposes only and are not based upon actual measurements.

Fan Controller Support ResourcesPlease visit smsc.com for a complete listing of fan controller support resources

Which SMSC Fan Controller is Right for Your Design?

PART NUMBER EMC2300 EMC6D103S EMC2101 EMC2102 EMC2103 EMC2104 EMC2105 EMC2106

Package 16-pin SSOP 24-pin SSOP 8-pin MSOP,8-pin SOIC

28-pin QFN 12-pin QFN,16-pin QFN

20-pin QFN 20-pin QFN 28-pin QFN

Operating Temperature 0 to 70ºC 0 to 70ºC -40 to 125ºC -40 to 125ºC -40 to 125ºC -40 to 125ºC -40 to 125ºC -40 to 125ºC

Power Supply 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V

SMBus 2.0 Support • • • • • • • •

PWM Outputs 3 3 1 1 2 4

Linear Drive Outputs 1 1 1

RPM Closed-Loop Control • • • • •

High-Frequency PWM Support • • • • • N/A •

Fan Tach Inputs 4 4 1 1 1 2 1 2

Remote Temp Monitors 2 2 1 3 1,3 (EMC2103-2) 4 4 4

Remote Temp Accuracy +/- 3ºC +/- 3ºC +/- 1ºC +/- 1ºC +/- 1ºC +/- 1ºC +/- 1ºC +/- 1ºC

Ambient Temp Monitor • • • • • • • •

Ambient Temp Accuracy +/- 3ºC +/- 3ºC +/- 2ºC +/- 2ºC +/- 2ºC +/- 2ºC +/- 2ºC +/- 2ºC

Temp Interrupt/SMBus Alert • • 1 1 1 1 1 4

Beta Compensation/ BJT Support

• • • • • •

Resistance Error Correction • • • • • •

Accepts External Temp • • • • • •

Thermistor Option • • •

System Shutdown • • • • •

Voltage Monitors Vccp Vcc, Vccp, 2.5, 5, 12

3 2 3

Voltage Interrupt • •

Digital Filter • • •

Comments 5 Voltage, ID Pins

1mA Linear, DAC Drive

600 mA Drive DTS* Register DTS* Register, 3 GPIOs

600 mA Drive, DTS* Register,

1 GPIO

600 mA Drive, DTS* Register,

6 GPIOs

*Digital Temperature Sensor (DTS)

RPM CLOSED RESPONSE ADVANTAGE

Open-Loop Fan Speed Variation

Target Speed

Fan

Spee

d

Off

Time

Closed-Loop Fan Speed Variation with PID

Target Speed

Fan

Spee

d

Off

Time

Closed-Loop Fan Speed Variation without PID

Target Speed

Fan

Spee

d

Off

Time

PART NUMBER EMC2301 EMC2302 EMC2303 EMC2305 EMC2112 EMC2113

Package 8-pin MSOP 10-pin MSOP 12-pin QFN 16-pin QFN 20-pin QFN 16-pin QFN

Operating Temperature -40 to 125ºC -40 to 125ºC -40 to 125ºC -40 to 125ºC 0 to 85ºC -40 to 125ºC

Power Supply 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V

SMBus 2.0 Support • • • • • •

PWM Outputs 1 2 3 5 1

Linear Drive Outputs 1

RPM Closed-Loop Control • • • • • •

High-Frequency PWM Support • • • • •

Fan Tach Inputs 1 2 3 5 1 1

Remote Temp Monitors 3 3

Remote Temp Accuracy +/- 1º C +/- 1º C

Ambient Temp Monitor • •

Ambient Temp Accuracy +/- 2º C +/- 2º C

Temp Interrupt/SMBus Alert SMBus Alert SMBus Alert SMBus Alert SMBus Alert 1 1

Beta Compensation/BJT Support • •

Resistance Error Correction • •

Accepts External Temp • •

Thermistor Option

System Shutdown • •

Voltage Monitors

Voltage Interrupt

Digital Filter • •

Comments Clock Input Clock Input Clock Input Clock Input 600 mA Drive DTS* Register, Direct fan control by

PWM input

6

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*Digital Temperature Sensor (DTS)

Which SMSC Fan Controller is Right for Your Design? (continued)

SMSC is committed to working toward a sustainable environment. We endeavor to make continual improvements in natural resource conservation through efficient product design and global operations thereby reducing greenhouse gas emissions generated by our products and facilities. Our environmental life cycle process seeks to reduce our carbon footprint through product life and recyclability and efficient use of materials, energy and transportation. We remain committed to promoting smart energy policies across our global organization.

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ID#

CC

P-A

PT-

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0/1

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Copyright ©2011 SMSC or its subsidiaries. All rights reserved. Although the information in this document has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to product descriptions and specifications at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC’s standard Terms of Sale Agreement dated before the date of your order. Products may contain design defects or errors known as anomalies which may cause a product’s functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. SMSC and the SMSC logo are registered trademarks of Standard Microsystems Corporation (“SMSC”). Other names mentioned may be trademarks of their respective holders. All claims made herein speak as of the date of this material. The company does not undertake to update such statements. (10/11)

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