User guide

MAX1669
Fan Controller and Remote Temperature Sensor
with SMBus Serial Interface
______________________________________________________________________________________ 19
Chip Information
TRANSISTOR COUNT: 12,924
MAX1669
ADD1
ADD0
SYNC
I/O1
ADD2
V
CC
+12V
AGND PGND
N-CH
FDN 359AN
SYSTEM POWER
GROUND
FAN
DXP
0.1µF
DXN
+3V TO +5.5V
SMBCLK
SMBDATA
ALERT
10k10k10k10k
OVERT
I/O2
2200pF
2N3906
Typical Operating Circuit