TC647B Microchip Technology Inc., TC647B Datasheet - Page 9
TC647B
Manufacturer Part Number
TC647B
Description
Pwm Fan Speed Controllers With Minimum Fan Speed, Fan Restart And Fansense Technology For Fault Detection
Manufacturer
Microchip Technology Inc.
Datasheet
1.TC647B.pdf
(34 pages)
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Note: Unless otherwise indicated, V
FIGURE 2-13:
Temperature.
FIGURE 2-14:
Temperature.
FIGURE 2-15:
Temperature.
2003 Microchip Technology Inc.
30
25
20
15
10
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
5
0
-40
-40 -25 -10
-40 -25 -10
-25
V
V
DD
-10
DD
V
V
V
= 3.0V
DD
DD
= 5.0V
DD
V
V
DD
V
V
= 4.0V
= 3.0V
DD
= 4.0V
5
DD
DD
5
5
= 3.0V
= 4.0V
= 5.0V
= 5.5V
Temperature (ºC)
PWM Sink Current (I
V
V
Temperature (ºC)
Temperature (ºC)
V
20
V
20
20
DD
SHDN
REL
DD
= 5.5V
= 5.5V
35
35
35
Threshold vs.
50
Threshold vs.
50
50
65
65
65
DD
80
80
80
= 5V, T
V
V
OL
DD
95
95
95
= 0.1V
= 5.0V
110 125
110 125
110 125
OL
A
DD
= +25°C.
) vs.
FIGURE 2-16:
Temperature.
FIGURE 2-17:
Hysteresis (V
100
2.630
2.625
2.620
2.615
2.610
2.605
2.600
2.595
95
90
85
80
75
70
-40 -25 -10
-40 -25 -10
TC642B/TC647B
OTF-HYS
V
DD
5
V
5
DD
= 5.5V
V
Over-Temperature
Temperature (ºC)
Temperature (ºC)
= 3.0V
20
OTF
) vs. Temperature.
20
35
35
V
V
Threshold vs.
DD
DD
= 3.0V
50
50
= 5.5V
65
65
DS21756B-page 9
80
80
V
DD
95
95
= 5.0V
110 125
110 125