LM75 datasheet(2/12 Pages) MAXIM

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Digital Temperature Sensor and Thermal

Watchdog with 2-Wire Interface

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS (Note 1)

ELECTRICAL CHARACTERISTICS

(+VS = +3.0V to +5.5V, unless otherwise noted. Temperature accuracy specifications apply for +VS = 3.3V for versions with “-3” in

the suffix and for +VS = 5V for versions with “-5” in the suffix. TA = -55°C to +125°C, unless otherwise noted. Typical values are at

+VS = +5V, TA = +25°C.) (Notes 4, 5)

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.

+VS to GND ...........................................................-0.3V to +6.0V

OS, SDA, SCL to GND...........................................-0.3V to +6.0V

All Other Pins to GND .................................-0.3V to (+VS + 0.3V)

Input Current at Any Pin (Note 2)..........................................5mA

Package Input Current (Note 2)..........................................20mA

OS Output Sink Current ......................................................10mA

Continuous Power Dissipation (TA = +70°C) (Note 3)

8-Pin µMAX (µSOP)

(derate 4.5mW/°C above +70°C) ..................................362mW

8-Pin SO (SOP) (derate 5.9mW/°C above +70°C) ........471mW

Junction-to-Case Thermal Resistance (

θJC) (Note 3)

8-Pin µMAX (µSOP) .......................................................42°C/W

8-Pin SO (SOP)..............................................................40°C/W

Junction-to-Ambient Thermal Resistance (

θJA) (Note 3)

8-Pin µMAX (µSOP) .....................................................221°C/W

8-Pin SO (SOP)............................................................170°C/W

ESD Protection

Human Body Model (RD = 1.5k

Ω, CS = 100pF)

All Pins to GND .................................................................±2kV

Operating Temperature Range .........................-55°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

-25°C

≤ TA ≤ +100°C

-2.0

+2.0

Accuracy (6

σ)

-55°C

≤ TA ≤ +125°C

-3.0

+3.0

°C

-25°C

≤ TA ≤ +100°C

-1.5

+1.5

Accuracy (3

σ) (Note 6)

-55°C

≤ TA ≤ +125°C

-2.0

+2.0

°C

Resolution

Bits

Temperature Conversion Time

(Note 7)

100

300

I2C inactive

0.25

0.5

Shutdown mode, +VS = 3V

Quiescent Supply Current

Shutdown mode, +VS = 5V

µA

+VS Supply Voltage Range

3.0

5.5

OS Output Saturation Voltage

IOUT = 4.0mA (Note 8)

0.8

OS Delay

(Note 9)

Conver-

sions

OS Output Fall Time

tOF

CL = 400pF, IO = 3mA (Note 10)

250

TOS Default Temperature

(Note 11)

°C

THYST Default Temperature

(Note 11)

°C

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifica-

tions do not apply when operating the device beyond its rated operating conditions.

Note 2: When the input voltage (VI) at any pin exceeds the Absolute Maximum limits (VI < GND, VI > 6V or VI > +VS), the current at

that pin should be limited to 5mA. The 20mA maximum package input current rating limits the number of pins that can safely

exceed the power supplies with an input current of 5mA to four.

Note 3: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a single-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

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