TC648B Microchip Technology Inc., TC648B Datasheet - Page 7

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

2.0
Note: Unless otherwise indicated, V
FIGURE 2-1:
FIGURE 2-2:
V
FIGURE 2-3:
vs. V
OL
2003 Microchip Technology Inc.
Note:
.
DD
165
160
155
150
145
140
135
130
125
16
14
12
10
16
14
12
10
8
6
4
2
0
8
6
4
2
0
0
0
TYPICAL PERFORMANCE CURVES
-40 -25 -10
- V
Pins 6 & 7 Open
C
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
F
50 100 150 200 250 300 350 400 450 500 550 600
OH
= 1 µF
V
100
DD
V
DD
= 5.5V
.
= 5.5V
V
200
DD
V
= 5.0V
5
DD
I
PWM Sink Current (I
PWM Source Current (I
Temperature (ºC)
= 5.0V
DD
300
20
V
V
DD
DD
V
V
DD
V
= 3.0V
V
vs. Temperature.
OL
- V
35
DD
DD
= 5.5V
400
(mV)
OH
= 3.0V
= 3.0V
50
(mV)
500
65
V
DD
DD
V
DD
80
600
= 4.0V
= 5V, T
= 4.0V
95
700
110 125
OL
A
= 25°C.
) vs.
800
OH
)
TC646B/TC648B/TC649B
FIGURE 2-4:
Temperature.
FIGURE 2-5:
FIGURE 2-6:
Temperature.
30.50
30.00
29.50
29.00
28.50
170
165
160
155
150
145
140
135
130
125
30
27
24
21
18
15
-40
3
-40 -25 -10
Pins 6 & 7 Open
V
Pins 6 & 7 Open
C
IN
-25
F
= 0V
= 1 µF
V
-10
DD
3.5
= 3.0V
V
DD
5
V
5
= 3.0V
DD
Temperature (ºC)
PWM Frequency vs.
I
I
Temperature (ºC)
20
DD
DD
= 5.5V
20
4
T
V
vs. V
35
Shutdown vs.
A
35
DD
= +90ºC
(V)
50
50
DD
4.5
V
65
DD
65
.
= 5.5V
DS21755B-page 7
80
80
T
5
95
A
C
95 110 125
T
= +125ºC
T
F
A
A
= 1.0 F
= -40ºC
= -5ºC
110 125
5.5