Rainbow-electronics MAX6641 Manual do Utilizador descarregar pdf (Página 2)

MAX6641

SMBus-Compatible Temperature Monitor with

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

= +25°C.)

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.

All Voltages Referenced to GND

, OT, SMBDATA, SMBCLK, PWMOUT...............-0.3V to +6V

DXP.........................................................…-0.3V to (V

+ 0.3V)

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

ESD Protection

(all pins, Human Body Model) ......…………………….±2000V

Continuous Power Dissipation (T

= +70°C)

10-Pin µMAX (derate 5.6mW/°C above +70°C) .......... 444mW

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 V

Operating Current SMBDATA, SMBCLK not switching 0.5 1 mA

+25°C ≤ T

≤ +125°C,

= +60°C

±1

0°C ≤ T

≤ +145°C,

+25°C ≤ T

= ≤ +100°C

±3

External Temperature Error

= 3.3V

0°C ≤ T

≤ +145°C,

0°C ≤ T

≤ +125°C

±4

°C

+25°C ≤ T

≤ +100°C

-2.5 +2.5

Internal Temperature Error

= 3.3V

0°C ≤ T

≤ +125°C -4 +4

°C

1°C

Temperature Resolution

8 Bits

Conversion Time 200

250

300 ms

PWM Frequency Tolerance -20

+20

High level 80

100

120

Remote-Diode Sourcing Current

Low level 8 10 12

µA

DXN Source Voltage 0.7 V

I/O

OT, SMBDATA, PWMOUT Output

Low Voltage

OUT

= 6mA 0.4 V

OT, SMBDATA, PWMOUT

Output-High Leakage Current

= 5.5V 1 µA

SMBDATA, SMBCLK Logic-Low

Input Voltage

= 3V to 5.5V 0.8 V

SMBDATA, SMBCLK Logic-High

Input Voltage

= 3V to 5.5V 2.1 V

SMBDATA, SMBCLK Leakage

Current

1µA

SMBDATA, SMBCLK Input

Capacitance

5pF

1 2 3 4 5 6 7 ... 16 17

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