Local

Temperature

Registers

Remote 1

Temperature

Registers

SMBus Two Wire Serial Interface

Remote

Diode2 Selector

'-6 Converter

11-Bit or 10-Bit Plus Sign Remote

9-bit Plus Sign Local

3.0V-3.6V

D+

D-

SMBDAT

SMBCLK

Remote 2

Temperature

Registers

Diode Filter

Control

Registers

Config

and

Status

Registrer

Revision &

Manufacturer

ID Registers

Remote

Diode1 Selector

D+

D-

Local

Diode Selector

TruTherm

TM

Temperature

Sensor

Circuitry

LM95231

Control

Logic

Diode Type

Selection

Register

Diode

TruTherm

Control

Register

LM95231

www.ti.com

SNIS139E – FEBRUARY 2005 – REVISED MARCH 2013

Simplified Block Diagram

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Absolute Maximum Ratings

(1)

Supply Voltage

Voltage at SMBDAT, SMBCLK

−0.3 V to 6.0 V−0.5V to 6.0V

Voltage at Other Pins

±5 mA

30 mA

SMBDAT Output Sink Current

10 mA

125°C

Storage Temperature

−65°C to +150°C

Human Body Model

2000 V

Machine Model

200 V

Soldering process must comply with Texas Instruments' reflow temperature profile specifications. Refer to http://www.ti.com/packaging/.(5)

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for

which the device is ensured to be functional, but do not ensure specific performance limits. For ensured specifications and test

conditions, see the Electrical Characteristics. The ensured specifications apply only for the test condition listed. Some performance

characteristics may degrade when the device is not operated under the listed test conditions. Operation of the device beyond the

Maximum Operating Ratings is not recommended.

(2)

mA. Parasitic components and or ESD protection circuitry are shown in Figure 2 and Table 1 for the LM95231's pins. Care should be

taken not to forward bias the parasitic diode, D1, present on pins: D1+, D2+, D1

−, D2−. Doing so by more than 50 mV may corrupt the

temperature measurements.

(3)

Thermal resistance junction-to-ambient when attached to a printed circuit board with 1oz. foil and no airflow:

— VSSOP-8 = 210°C/W

(4)

Human body model, 100pF discharged through a 1.5k

Ω resistor. Machine model, 200pF discharged directly into each pin.

(5)

Reflow temperature profiles are different for packages containing lead (Pb) than for those that do not.

Copyright © 2005–2013, Texas Instruments Incorporated

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Product Folder Links: LM95231