Rainbow-electronics MAX6616 Manual do Utilizador descarregar pdf (Página 2)

MAX6615/MAX6616

Dual-Channel Temperature Monitors and

Fan-Speed Controllers with Thermistor Inputs

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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 Are Referenced to GND

Supply Voltage (V

) ...............................................-0.3V to +6V

PWM_, TACH_, OT, FAN_FAIL ............................-0.3V to +13.5V

ADD0, ADD1, SDA, SCL ..........................................-0.3V to +6V

All Other Pins..............................................-0.3V to (V

+ 0.3V)

SDA, OT, FAN_FAIL, PWM_, GPIO_ Current....................±50mA

TH_ Current ........................................................................±1mA

REF Current ......................................................................±20mA

Continuous Power Dissipation (T

= +70°C)

16-Pin QSOP (derated at 8.3mW/°C

above +70°C)............................................................666.7mW

24-Pin QSOP (derated at 9.5mW/°C

above +70°C)...........................................................761.9 mW

ESD Protection (all pins, Human Body Model) ....................±2kV

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

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.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Operating Supply Voltage

3.0 5.5 V

Standby Current Interface inactive, ADC in idle state 10 µA

Operating Current I

Interface inactive, ADC active 0.5 1 mA

External Temperature Error

= +3.3V, 0.15V ≤ V

TH_

≤ +0.71V (excludes

thermistor errors, thermistor nonlinearity) (Note1)

±1 °C

= +3.3V, 0°C ≤ T

≤ +85°C, ±2.5

Internal Temperature Error

= +3.3V, 0°C ≤ T

≤ +125°C ±4

°C

Temperature Resolution 0.125 °C

Conversion Time 250 ms

Conversion Rate Timing Error -20 +20 %

PWM Frequency Error -20 +20 %

INPUT/OUTPUT

Output Low Voltage V

= +3V, I

OUT

= 6mA 0.4 V

Output High Leakage Current I

1µA

Logic Low Input Voltage V

0.8 V

Logic High Input Voltage V

2.1 V

Input Leakage Current 1µA

Input Capacitance C

5pF

SMBus TIMING (Figures 2, 3) (Note 2)

Serial Clock Frequency f

SCLK

10 400 kHz

Clock Low Period t

LOW

10% to 10% 4 µs

Clock High Period t

HIGH

90% to 90% 4.7 µs

Bus Free Time Between STOP

and START Conditions

BUF

4.7 µs

SMBus START Condition

Setup Time

SU:STA

90% of SCL to 90% of SDA 4.7 µs

1 2 3 4 5 6 7 ... 19 20

MAX6615/MAX6616 1

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