TC648B Microchip Technology Inc., TC648B Datasheet - Page 8

• Manufacturer Part Number: TC648B
• Description: Pwm Fan Speed Controllers With Auto-shutdown, Fan Restart And Fansense Technology For Fault Detection
• Manufacturer: Microchip Technology Inc.

TC646B/TC648B/TC649B
Note: Unless otherwise indicated, V
FIGURE 2-7:
Temperature.
FIGURE 2-8:
FIGURE 2-9:
DS21755B-page 8
70
60
50
40
30
20
10
2.610
2.600
2.590
2.580
2.570
1.220
1.210
1.200
1.190
1.180
-40
I
OL
-40 -25 -10
-40 -25 -10
V
-25
= 2.5 mA
DD
C
F
= 4.0V
= 1 µF
C
-10
F
= 1 µF
V
DD
5
= 3.0V
5
5
V
Temperature (ºC)
FAULT / OTF V
V
V
V
20
DD
Temperature (ºC)
Temperature (ºC)
DD
C(MAX)
C(MIN)
20
20
= 5.5V
= 3.0V
V
35
DD
35
35
= 5.5V
V
50
V
DD
50
DD
50
vs. Temperature.
vs. Temperature.
= 3.0V
= 5.0V
65
65
65
DD
80
80
80
= 5V, T
V
OL
DD
V
95
DD
95
95
= 5.0V
vs.
= 5.0V
110 125
110 125
110 125
A
= 25°C.
FIGURE 2-10:
(V
FIGURE 2-11:
FIGURE 2-12:
vs. Temperature.
TH(SENSE)
74.0
73.5
73.0
72.5
72.0
71.5
71.0
70.5
70.0
69.5
22
20
18
16
14
12
10
45.00
40.00
35.00
30.00
25.00
20.00
15.00
10.00
8
6
4
2
0
5.00
0
-40 -25 -10
-40 -25 -10
) vs. Temperature.
V
50
DD
V
DD
= 5.5V
= 3.0V
100
V
DD
5
5
= 5.5V
Sense Threshold
FAULT / OTF I
PWM Source Current (I
V
Temperature (ºC)
150
Temperature (ºC)
V
20
DD
V
20
DD
DD
= 4.0V
2003 Microchip Technology Inc.
V
= 5.5V
OL
= 3.0V
35
35
200
(mV)
V
DD
50
V
50
DD
V
= 3.0V
DD
250
= 5.0V
65
= 4.0V
65
80
300
80
OL
V
V
OH
DD
V
= 0.8V
V
95
95
vs. V
= 5.0V
DD
DD
350
= 5.0V
= 4.0V
110 125
110 125
DD
OL
400
OH
.
)