Rainbow Electronics MAX6640 - Manual (Page 20)

MAX6640
2-Channel Temperature Monitor with Dual
Automatic PWM Fan-Speed Controller
20 ______________________________________________________________________________________
MAX6640
V FAN
SDA
SCL
PWM2
DXP1
DXN
TO CLOCK THROTTLE
TO SYSTEM SHUTDOWN
TO SMBus
MASTER
3.3V TO 5.5V
3.3V TO 5.5V
3.3V TO 5.5V 3.3V TO 5.5V
3.3V TO 5.5V
3.3V TO 5.5V
PWM1
5V
5V
DXP2
GPU
V CC
CPU
GND
5V
TACH1
TACH2
ALERT
THERM FANFAIL
V FAN
(5V TO 12V)
OT
Typical Operating Circuit
Chip Information
TRANSISTOR COUNT: 39,135
PROCESS: BiCMOS