MAX6639ATE datasheet(2/22 Pages) MAXIM

Part #	MAX6639ATE

Description	2-Channel Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller

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Manufacturer	MAXIM [Maxim Integrated Products]

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2-Channel Temperature Monitor with Dual,

Automatic, PWM Fan-Speed Controller

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = +3.0V to +5.5V, TA = 0

°C to +125°C, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +85°C.) (Note 1)

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.

VCC to GND ..............................................................-0.3V to +6V

PWM1, PWM2, TACH1, and TACH2 to GND ......-0.3V to +13.5V

DXP1 and DXP2 to GND ..........................-0.3V to +(VCC + 0.3V)

DXN to GND ..........................................................-0.3V to +0.8V

SCL, SDA, THERM, OT, FANFAIL, ADD,

and ALERT to GND ..............................................-0.3V to +6V

SDA, OT, THERM, ALERT, FANFAIL,

PWM1, and PWM2 Current .............................-1mA to +50mA

DXN Current .......................................................................±1mA

ESD Protection (all pins, Human Body Model) ..................2000V

Continuous Power Dissipation (TA = +70°C)

16-Pin QSOP (derated 8.3mW/°C above +70°C) ....... 667mW

16-Pin TQFN 5mm x 5mm

(derated at 33.3mW/°C above +70°C)................2666.7mW

Operating Temperature Range .........................-40°C to +125°C

Junction Temperature ......................................................+150°C

Storage Temperature Range ............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Supply Voltage Range

VCC

+3.0

+5.5

V

Standby Current

SMB static, sleep mode

3

10

µA

Operating Current

Interface inactive, ADC active

0.5

1

mA

VCC = +3.3V, +60

°C ≤ TA ≤ +100°C and

+60

°C ≤ TR ≤ +100°C

±1

VCC = +3.3V, +40

°C ≤ TA ≤ +100°C and

0

°C ≤ TR ≤ +145°C

±2.5

External Temperature Error

VCC = +3.3V, 0

°C ≤ TR ≤ +145°C

±3.8

°C

VCC = +3.3V, +25

°C ≤ TA ≤ +100°C±2

Internal Temperature Error

VCC = +3.3V, 0

°C ≤ TA ≤ +125°C±4

°C

Supply Sensitivity of Temperature

Measurement

±0.2

°C/V

+0.125

°C

Temperature Resolution

11

Bits

Conversion Time

125

ms

Conversion-Rate Timing Error

-10

+10

%

PWM Frequency Error

-10

+10

%

Tachometer Accuracy

VCC = 3.0V to 3.63V, TA = +60°C to +100°C

±3

%

High level

70

100

130

Remote-Diode Sourcing Current

Low level

7.0

10

13.0

µA

DXN Source Voltage

0.7

V

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