Datasheet

MAX6653/MAX6663/MAX6664
Temperature Monitors and
PWM Fan Controllers
______________________________________________________________________________________ 23
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
PWM_OUT
SMBCLK
SMBDATA
INT
ADD
N.C.
N.C.
DXP
DXN
TOP VIEW
MAX6663
MAX6664
QSOP
TACH/AIN
N.C.
V
CC
N.C.
GND
THERM
FAN_FAULT
Pin Configurations (continued)
Chip Information
TRANSISTOR COUNT: 27,074
PROCESS: BiCMOS
SMBus
INTERFACE
REGISTER BANK
SMBCLK
SMBDATA
(CRIT1)
(CRIT0)
ALU
MUX
TACHOMETER
TEMPERATURE
MEASUREMENT
ANALOG
MUX
ADC
INTERNAL
TEMPERATURE
SENSOR
PWM OUTPUT CONTROLLER
TACH SIGNAL
CONDITIONING
BANDGAP
REFRENCE
SLAVE ADDRESS
DECODER
PWM_OUT
DXP
DXN
TACH/AIN
ADD
V
CC
GND
INT
THERM
FAN_FAULT
( ) ARE FOR MAX6653 ONLY
SHUTDOWN AND
THERM LIMIT
DECODER
(SDL)
(SDR)
Functional Diagram