Rainbow-electronics MAX6640 Uživatelský manuál stáhnout pdf (Strana 2)

MAX6640

2-Channel Temperature Monitor with Dual

Automatic PWM Fan-Speed Controller

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +3.0V to +5.5V, T

= 0°C to +125°C, unless otherwise noted. Typical values are at V

= +3.3V, T

= +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.

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 +(V

+ 0.3V)

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

SCL, SDA,

THERM, OT, FANFAIL,

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 (T

= +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

+3.0 +5.5

Standby Current SMB static, sleep mode 3 10 µA

Operating Current Interface inactive, ADC active 0.5 1 mA

= +3.3V, +60°C ≤ T

≤ +100°C and

+60°C ≤ T

≤ +100°C

±1

= +3.3V, +40°C ≤ T

≤ +100°C and

0°C ≤ T

≤ +145°C

±2.5

External Temperature Error

= +3.3V,

0°C ≤ T

≤ +145°C

±3.8

°C

= +3.3V,

+25°C ≤ T

≤ +100°C

±2

Internal Temperature Error

= +3.3V,

0°C ≤ T

≤ +125°C

±4

°C

Supply Sensitivity of Temperature

Measurement

±0.2

°C/V

+0.125

°C

Temperature Resolution

11 Bits

Conversion Time

125

Conversion-Rate Timing Error -10

+10

PWM Frequency Error -10

+10

Tachometer Accuracy

= 3.135V to 3.345V,

+60°C ≤ T

≤ +85°C

±4 %

High level 70

100

130

Remote-Diode Sourcing Current

Low level 7.0 10

13.0

µA

DXN Source Voltage 0.7 V

1 2 3 4 5 6 7 ... 21 22

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