Dual RPM-Based PWM Fan Controller
Datasheet
Chapter 6 Typical Operating Curves
The following Typical Operating Curves are included.
Supply Current vs. Temperature
Supply Current 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
Supply Current vs. Ambient Temperature
Supply Current vs. Supply Voltage
500
450
400
350
300
250
500
450
400
350
300
250
-50
0
50
Ambient Temperature (°C)
100
150
2.95
3.05
3.15
3.25
3.35
Supply Voltage (V)
3.45
3.55
3.65
Supply Voltage (V)
Temperature (C)
Tachometer Measurement Accuracy vs. Supply Voltage
Tachometer Measurement Accuracy vs. Ambient Temperature
1
1
0.8
0.6
0.4
0.2
0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
-0.2
-0.4
-0.6
-0.8
-1
2.95
3.05
3.15
3.25
3.35
3.45
3.55
3.65
-50
0
50
100
150
Supply Voltage (V)
AmbienTt Teemmppeerraatuutrree(°(CC))
SMSC EMC2302
Revision 1.1 (10-12-09)
DATA4S1HEET
SMSC [ SMSC CORPORATION ]
