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 Temeperature
Supply Current vs. Supply Voltage
400
380
360
340
320
300
280
260
240
220
200
400
380
360
340
320
300
280
260
240
220
200
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)
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 EMC2301
Revision 1.1 (10-12-09)
DATA3S9HEET
SMSC [ SMSC CORPORATION ]
