MAX31785 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX31785

6-Channel Intelligent Fan Controller

Maxim Integrated 

6-Channel Intelligent Fan Controller

ABSOLUTE MAXIMUM RATINGS

VDD to VSS............................................................-0.3V to +5.5V

RS- to VSS.............................................................-0.3V to +0.3V

All Other Pins Except REG18 and

REG25 Relative to VSS......................... -0.3V to (VDD + 0.3V)*

Continuous Power Dissipation (TA = +70NC)

TQFN (derate 35.7mW/NC above +70NC)...............2857.1mW

Operating Temperature Range........................... -40NC to +85NC

Storage Temperature Range............................. -55NC to +125NC

Lead Temperature (soldering, 10s).................................+300NC

Soldering Temperature (reflow).......................................+260NC

*Subject to not exceeding +5.5V.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

RECOMMENDED OPERATING CONDITIONS

(TA = -40NC to +85NC.)

PARAMETER

VDD Operating Voltage Range

SYMBOL

VDD (Note 1)

CONDITIONS

Input Logic 1

VIH

Input Logic 0

Input Logic-High: SCL, SDA,

MSCL, MSDA

Input Logic-Low: SCL, SDA,

MSCL, MSDA

VIL

VI2C_IH 2.7V P VDD P 3.6V (Note 1)

VI2C_IL 2.7V P VDD P 3.6V (Note 1)

MIN

2.7

0.7 x

VDD

0

2.1

0

TYP MAX UNITS

5.5

V

VDD +

0.3

V

0.3 x

VDD

V

VDD +

0.3

V

+0.8

V

DC ELECTRICAL CHARACTERISTICS

(VDD = 2.7V to 5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VDD = 3.3V, TA = +25NC, unless otherwise noted.)

PARAMETER

Supply Current

Brownout Voltage

Brownout Hysteresis

Internal System Clock

System Clock Error (Note 3)

Output Logic-Low

SYMBOL

CONDITIONS

ICPU (Note 2)

IPROGRAM

VBO Monitors VDD (Note 1)

VBOH Monitors VDD (Note 1)

fMOSC

fERR:MOSC

+25NC P TA P +85NC

-40NC P TA P +25NC

VOL1 IOL = 4mA (Note 1)

Output Logic-High

VOH1 IOH = -2mA (Note 1)

PWM Pullup Current

ADC Internal Reference

ADC Voltage Measurement Error

IPU

VERR

VPIN = VSS, VDD = 3.3V

MIN

2.40

-3

-6.5

VDD -

0.5

38

-1

TYP

3

8

2.46

30

4.0

55

1.225

MAX

2.55

+2

+1.6

0.4

107

+1

UNITS

mA

V

mV

MHz

%

V

V

FA

V

%

6

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