Datasheet
Local
Temperature
Registers
Remote 1
Temperature
Registers
SMBus Two Wire Serial Interface
Remote
Diode2 Selector
'-6Converter
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 −0.3 V to (V
DD
+ 0.3 V)
Input Current at All Pins
(2)
±5 mA
Package Input Current
(2)
30 mA
SMBDAT Output Sink Current 10 mA
Junction Tempeature
(3)
125°C
Storage Temperature −65°C to +150°C
ESD Susceptibility
(4)
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) When the input voltage (V
I
) at any pin exceeds the power supplies (V
I
< GND or V
I
> V
DD
), the current at that pin should be limited to 5
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 1.5kΩ 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.
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Product Folder Links: LM95231