TC64X/TC64XB Fan Control Demo Board User’s Guide
DS21401C-page 8
2003 Microchip Technology Inc.
FIGURE A-2:
TC64X/TC64XB Fan Control Demo Board Schematic
FAULT
SENSE
R
1
R
2
R
3
R
4
GND
GND
Test Point
V
DD
V
DD
8
1
3
2
4
5
7
6
V
IN
V
AS
/V
MIN
V
AS
/V
MIN
Sensor
Input
V
OUT
V
OUT
C
6
0.1 µF
C
2
0.01 µF
R
5
R
6
R
8
470
Ω
C
4
C
F
TC64X
U1
FAULT
Q
4
2N3906
Q
3
Q
1
Q
2
R
7
1.2 k
Ω
FAULT
LED
Optional
C
3
0.01 µF
C
1
10 µF
C7
0.47 µF - 1 µF
(Optional)
C
8
0.01 µF
TC64XB