Fan Controller and Remote Temperature Sensor

with SMBus Serial Interface

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

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.

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

SMBCLK, SMBDATA, ALERT, SYNC,

I/O1, I/O2, OVERT, FAN to AGND ......................-0.3V to +6V

PGND to AGND ....................................................-0.3V to +0.3V

PWM Current....................................................-50mA to +50mA

SMBDATA Current .............................................-1mA to +50mA

I/O1, I/O2 Current...............................................-1mA to +25mA

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

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

16-Pin QSOP (derate 8.30mW/°C above +70°C).......667mW

Operating Temperature Range (extended) ......-55°C to +125°C

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

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

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

FAN output set to

DAC mode

FAN output set to

150Hz mode

High level

Monotonicity guaranteed

+ 0.65V

SMBus static

Autoconvert mode

From stop bit to conversion complete

rising edge

Autoconvert mode,

average measured over 1s

CONDITIONS

mA

-10

FAN Output Sink Current

mA

10

FAN Output Source Current

V

0.7

DXN Source Voltage

80

100

120

µA

Remote-Diode Source Current

Hz

1.6

2

2.4

Conversion Rate

ms

47

62

78

Conversion Time

µA

360

µA

75

150

Average Operating Supply Current

°C

Temperature Error, Remote Diode (Note 2)

Bits

8

Resolution (Note 1)

310

µA

Standby Supply Current

mV

50

POR Threshold Hysteresis

V

1

1.9

2.5

Power-On Reset Threshold

-3

3

V

3

5.5

Supply Voltage Range

V

2.6

2.8

2.95

Undervoltage Lockout Threshold

mV

50

Undervoltage Lockout Hysteresis

UNITS

MIN

TYP

MAX

PARAMETER

SMBCLK at 10kHz

3

Low level

810

12

ADC AND POWER SUPPLY

FAN OUTPUT