EMC2113 datasheet(73/85 Pages) SMSC

73 / 85 page

RPM-Based Fan Controller with Multiple Temperature Zones & Hardware Thermal Shutdown

Datasheet

SMSC EMC2113

Revision 1.2 (10-08-09)

DATASHEET

Chapter 8 Typical Operating Curves

The following Typical Operating Curves are included:

Supply Current vs. Temperature

Supply Current vs. Supply Voltage

Temperature Error vs. Series Resistance

Temperature Error vs. Ambient Temperature

Temperature Error vs. Supply Voltage

Fan TACH Accuracy vs. Temperature

Fan TACH Accuracy vs. Supply Voltage

PWM Output Frequency vs. Supply Voltage

PWM Output Frequency vs. Temperature

FSC Operation

Look Up Table operation - PWM / Direct Drive

200

400

600

800

1000

1200

1400

-50

100

150

Supply Current vs. Temperature

VDD = 3.3V

Ambient Temperature (°C)

1/ sec w/o dynamic averaging

4/ sec w/ dynamic averaging

200

400

600

800

1000

1200

1400

2.95

3.05

3.15

3.25

3.35

3.45

3.55

3.65

Supply Current vs. Supply Voltage

TA = 25

°C

Supply Voltage (V)

1 / sec w/o Dynamic Averaging

4 / sec w/ Dynamic Averaging

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

120

160

100

Temperature Measurement

Accuracy vs. Series Resistance

REC Enabled

REC Disabled

Series Resistance (ohm)

-0.5

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

-50

100

150

Temperature Measurement Error vs. Ambient

Temperature

Ambient Temperature (°C)

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