Datasheet

6-Channel Intelligent Fan Controller
MAX31785
12
Block Diagram
MAXQ is a registered trademark of Maxim Integrated
Products, Inc.
ADC
TEMP
SENSOR
FLASHRAM
A1/TACHSEL
A0
MUX
MSDA
V
SS
V
SS
V
SS
V
DD
REG18
REG25
MSCL
SDA
SCL
ALERT
RST
POWER
CONTROL
2.5V
VREG
1.8V
VREG
4MHz
OSCILLATOR
SMBus
MASTER
INTERFACE
SMBus
SLAVE
INTERFACE
16-BIT
MAXQ
®
RISC CORE
SYSTEM
CONTROL
SIGNALS
PULSE-
WIDTH
MODULATOR
PWM0
PWM1
PWM2
PWM3
PWM4
PWM5
FAN
TACHOMETER
INPUTS
CONTROL
RS+0
RS-0
RS+1
RS-1
RS+2
RS-2
RS+3
RS-3
RS+4
RS-4
RS+5
RS-5
TACH0
TACH1
TACH2
TACH3
TACH4
TACH5
FAULT
MAX31785