LM75A

SNOS808P – JANUARY 2000 – REVISED DECEMBER 2014

www.ti.com

6.3 Recommended Operating Conditions

(1) (2)

MIN

MAX

UNIT

Specified Temperature Range (TMIN to TMAX)

−55

125

°C

Supply Voltage Range (+VS) LM75A

2.7

5.5

V

(1)

LM75A

θJA (thermal resistance, junction-to-ambient) when attached to a printed circuit board with 2 oz. foil similar to the one shown in

Thermal Information is summarized in the table below the Operating Ratings table.

(2)

Reflow temperature profiles are different for lead-free and non-lead-free packages. Soldering process must comply with Reflow

Temperature Profile specifications. Refer to www.ti.com/packaging.(2)

6.4 Thermal Information

LM75A

THERMAL METRIC(1)

D

DGK

UNIT

8 PINS

8 PINS

RθJA

Junction-to-ambient thermal resistance

200

250

°C/W

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

6.5 Temperature-to-Digital Converter Characteristics

Unless otherwise noted, these specifications apply for: +VS = 2.7 to 5.5 Vdc for LM75AIM. TA = TJ = 25°C, unless otherwise

noted.

PARAMETER

TEST CONDITIONS

MIN

TYP(1)

MAX(2)

UNIT

TA = −25°C to +100°C

–2

2

–55°C

≤ TJ ≤ 125°C

Accuracy

°C

TA = −55°C to +125°C

–3

3

–55°C

≤ TJ ≤ 125°C

Resolution

9

Bits

Temperature Conversion Time

See(3)

100

ms

See(3), –55°C

≤ TJ ≤ 125°C

300

I2C Inactive

0.28

mA

I2C Inactive, –55°C

≤ TJ ≤ 125°C

0.5

Quiescent Current

LM75A

Shutdown Mode, +VS = 3 V

4

μA

Shutdown Mode, +VS = 5 V

6

μA

O.S. Output Saturation Voltage

IOUT = 4 mA, –55°C ≤ TJ ≤ 125°C

0.8

V

O.S. Delay

See(4), –55°C

≤ TJ ≤ 125°C

1

6

Conversion

TOS Default Temperature

See(5)

80

°C

THYST Default Temperature

See(5)

75

°C

(1)

Typicals are at TA = 25°C and represent most likely parametric norm.

(2)

Maximum values (limits) are ensured to AOQL (Average Outgoing Quality Level).

(3)

The conversion-time specification is provided to indicate how often the temperature data is updated. The LM75A can be accessed at

any time and reading the Temperature Register will yield result from the last temperature conversion. When the LM75A is accessed, the

conversion that is in process will be interrupted and it will be restarted after the end of the communication. Accessing the LM75A

continuously without waiting at least one conversion time between communications will prevent the device from updating the

Temperature Register with a new temperature conversion result. Consequently, the LM75A should not be accessed continuously with a

wait time of less than 300ms.

(4)

O.S. Delay is user programmable up to 6 “over limit” conversions before O.S. is set to minimize false tripping in noisy environments.

(5)

Default values set at power up.

4

Submit Documentation Feedback

Copyright © 2000–2014, Texas Instruments Incorporated

Product Folder Links: LM75A