TC647 Microchip, TC647 Datasheet - Page 16

• Manufacturer Part Number: TC647
• Description: PWM Fan Speed Controller
• Manufacturer: Microchip

TC647
FIGURE 5-10:
DS21447C-page 16
Data from one or
Analog or Digital
more Sensors
Temperature
+5V
GND
TC647 as a Microcontroller Peripheral.
Microcontroller
Open-drain
Outputs
Outputs
CMOS
CMOS
I/O2
I/O3
I/O0
I/O1
INT
(MSB)
(RESET)
(LSB)
+5V
110 k
240 k
360 k
1.5 k
(Optional)
R
R
R
1 k
1
2
3
R
5
R
6
18 k
R
4
+5V
.01 F
18 k
33 k
C
B
R
R
8
7
.01 F
+
1 F
C
B
4
2
3
1
GND
V
V
C
IN
MIN
F
TC647
SENSE
FAULT
V
V
OUT
DD
2002 Microchip Technology Inc.
8
1 F
6
5
7
+5V
C
B
+5V
0.1 F
10 k
+
R
800
10
R
9
+12V
Fan
2N2222A
2.2
R
11