RPM-Based Fan Controller with Multiple Temperature Zones & Hardware Thermal Shutdown
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
Supply Current vs. Supply Voltage
TA = 25°C
Supply Current vs. Temperature
VDD = 3.3V
1400
1200
1000
800
600
400
200
0
1400
1200
1000
800
600
400
200
0
4 / sec w/ Dynamic Averaging
4/ sec w/ dynamic averaging
1 / sec w/o Dynamic Averaging
1/ sec w/o dynamic averaging
2.95
3.05
3.15
3.25
3.35
3.45
3.55
3.65
-50
0
50
100
150
Supply Voltage (V)
Ambient Temperature (°C)
Temperature Measurement
Accuracy vs. Series Resistance
Temperature Measurement Error vs. Ambient
Temperature
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
100
90
80
70
60
50
40
30
20
10
0
0.5
0.4
0.3
0.2
0.1
0
REC Disabled
-0.1
-0.2
-0.3
-0.4
-0.5
REC Enabled
0
40
80
120
160
-50
0
50
100
150
Series Resistance (ohm)
Ambient Temperature (°C)
SMSC EMC2113
Revision 1.2 (10-08-09)
DATA7S3HEET
SMSC [ SMSC CORPORATION ]
