TC647B Microchip Technology Inc., TC647B Datasheet - Page 6

• 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.

TC642B/TC647B
FIGURE 1-4:
DS21756B-page 6
.01 µF
C
7
+
-
+
-
V
V
MIN
R
IN
R
K
2
1
1
1 µF
C
TC642B/TC647B Electrical Characteristics Test Circuit.
6
K
0.1 µF
0.1 µF
C
C
2
4
3
Note: C
0.1 µF
2
3
1
C
5
V
V
C
IN
MIN
F
5
and C
7
are adjusted to get the necessary 1 µF value.
TC642B
TC647B
GND
V
DD
4
8
C
1 µF
SENSE
FAULT
2
V
OUT
C
0.1 µF
1
7
6
5
R
3
+
-
K
K
3
4
V
DD
R
4
+
-
2003 Microchip Technology Inc.
R
Current
limited
voltage
source
6
(pulse voltage source)
V
SENSE
+
-
R
5
Current
limited
voltage
source
0.1 µF
C
8
V
DD