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LM96163

www.ti.com

SNAS433D –JUNE 2008–REVISED MAY 2013

LM96163 Remote Diode Digital Temperature Sensor with Integrated Fan Control and

TruTherm

BJT Transistor Beta Compensation Technology

Check for Samples: LM96163

FEATURES

DESCRIPTION

The LM96163 has remote and local temperature

• TruTherm BJT Beta Compensation Technology

sensors with integrated fan control that includes

Supports 45nm, 65nm and 90nm Processor

TruTherm BJT transistor beta compensation

Remote Diodes

technology for remote diode sensing. The LM96163

• Factory Trimmed for Intel® 45 nm Processor

accurately measures: (1) its own temperature and (2)

Thermal Diodes

the temperature of a diode-connected transistor, such

as a 2N3904, or a thermal diode commonly found on

• Accurately Senses Diode-Connected 2N3904

Computer Processors, Graphics Processor Units

Transistors or Thermal Diodes On-board Large

(GPU) and other ASIC's. The LM96163 has an offset

Processors or ASIC's

• Accurately Senses its Own Temperature

ideality factors of other thermal diodes.

• Integrated PWM Fan Speed Control Output

The LM96163 also features an integrated, pulse-

Supports High Resolution at 22.5kHz

width-modulated (PWM), open-drain fan control

Frequency for 4-pin Fans

output. Fan speed depends on a combination of the

• Acoustic Fan Noise Reduction with User-

remote temperature reading, the lookup table and

Programmable 12-Step Lookup Table

enables the user to program a non-linear fan speed

• LUT Transition Fine Resolution Smoothing

vs. temperature transfer function often used to quiet

Function

acoustic fan noise. In addition a fully programmable

• Tachometer Input for Measuring Fan RPM

ramping function has been added to allow smooth

• Smart-Tach Modes for Measuring RPM of Fans transitions between LUT setpoints.

with Pulse-Width-Modulated Power as Shown

Table 1. Key Specifications

in Typical Application

■ Remote Temp Accuracy (includes quantization error)

• ALERT Output for Processor Event

LM96163 Temp DiodeTemp Max Error

Notification

+25 to +85°C +50 to +105°C ±0.75°C

• TCRIT Output for Critical Temperature System

+25 to +85°C +40 to +125°C ±1.5°C

Shutdown

-40 to +25°C +25 to 125°C ±3.0°C

• Offset Register Can Adjust for a Variety of

■ Local Temp Accuracy (includes quantization error)

Thermal Diodes

LM96163 Temp 25°C to 125°C ±3.0°C (max)

• 10-Bit Plus Sign and 11-Bit Unsigned Formats,

■ Supply Voltage +3.0 V to +3.6 V

with 1/8°C Resolution

■ Supply Current (0.8Hz Conversion) 456 µA (typ)

• Extended Resolution to 1/32°C when Digital

Filter Enabled

• Resolves Remote Diode Temperatures up to

255.875°C

• SMBus 2.0 Compatible Interface, with

TIMEOUT and ARA

• 10-Pin SON Package

APPLICATIONS

• Processor Thermal Management

• Electronic Test and Office Equipment

• Industrial Controls

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

LM96163

SNAS433D –JUNE 2008–REVISED MAY 2013

www.ti.com

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)(2)(3)

Supply Voltage, V

−0.3 V to 6.0 V

Voltage on SMBDAT, SMBCLK,ALERT, TCRIT, TACH, PWM Pins −0.5 V to 6.0 V

Voltage on Other Pins −0.3 V to (V

+ 0. 3 V)

Input Current, D− Pin

(4)

±1 mA

Input Current at All Other Pins

(4)

5 mA

Package Input Current

(4)

30 mA

SMBDAT, ALERT, PWM pins

Output Sink Current 10 mA

Package Power Dissipation See

(5)

Junction Temperature 125°C

Storage Temperature −65°C to +150°C

Human Body Model 2500 V

ESD Susceptibility

(6)

Machine Model 250 V

Charged Device Model 1000 V

(1) All voltages are measured with respect to GND, unless otherwise noted.

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

which the device is functional, but do not guarantee performance limits. For guaranteed specifications and test conditions, see the

Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may

degrade when the device is not operated under the listed test conditions.

(3) If Military/Aerospace specified devices are required, please contact the TI Sales Office/Distributors for availability and specifications.

(4) When the input voltage (V

) at any pin exceeds the power supplies (V

< GND or V

> V+), the current at that pin should be limited to

5 mA. Parasitic components and/or ESD protection circuitry are shown below for the LM96163's pins. Care should be taken not to

forward bias the parasitic diode, D2, present on pins D+ and D−. Doing so by more than 50 mV may corrupt temperature

measurements.

(5) Thermal resistance junction to ambient when attached to a 2 layer 4"x3" printed circuit board with copper thickness of 2oz. as described

in JEDEC specification EIA/JESD51-3 is 137°C/W. Thermal resistance junction to ambient when attached to a 4 layer 4"x3" printed

circuit board with copper thickness 2oz./1oz./1oz/2oz. and 4 thermal vias as described in JEDEC specification EIA/JESD51-7 is

40.3°C/W.

(6) Human body model, 100 pF discharged through a 1.5 kΩ resistor. Machine model, 200 pF discharged directly into each pin. Charged

Device Model (CDM) simulates a pin slowly acquiring charge (such as from a device sliding down the feeder in an automated

assembler) then rapidly being discharged.

Operating Ratings

(1)(2)(3)(4)

Specified Temperature Range (T

MIN

≤ T

MAX

) LM96163CISD –40°C ≤ T

≤ +85°C

Remote Diode Temperature Range -40°C ≤ T

≤ +140°C

Supply Voltage Range (V

) +3.0 V to +3.6 V

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

which the device is functional, but do not guarantee performance limits. For guaranteed specifications and test conditions, see the

Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may

degrade when the device is not operated under the listed test conditions.

(2) All voltages are measured with respect to GND, unless otherwise noted.

(3) Soldering process must comply with Reflow Temperature Profile specifications. Refer to www.ti.com/packaging

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

Product Folder Links: LM96163

LM96163

www.ti.com

SNAS433D –JUNE 2008–REVISED MAY 2013

DC Electrical Characteristics

TEMPERATURE-TO-DIGITAL CONVERTER CHARACTERISTICS

The following specifications apply for V

= 3.0 VDC to 3.6 VDC, and all analog source impedance R

= 50Ω unless

otherwise specified in the conditions. Boldface limits apply for T

= T

MIN

to T

MAX

; all other limits T

= +25°C; unless

otherwise noted. T

is the junction temperature of the remote thermal diode. T

is the junction temperature of the LM96163.

Units

Parameter Conditions Typical

(1)

Limits

(2)

(Limits)

Temperature Error Using the Remote T

= +50°C to +105°C

Thermal Diode of an Intel Processor on T

= +25°C to +85°C T

= Remote Diode ±0.75 °C (max)

45nm.

(3)

Junction Temperature

= +25°C to +85°C T

= +40°C to +125°C ±1.5 °C (max)

= -40°C to +25°C T

= +25°C to +125°C ±3.0 °C (max)

Temperature Error Using the Local Diode. T

= +25°C to +125°C ±1 ±3 °C (max)

See

(4)

(5)

for the thermal resistance to be

= -40°C to +25°C

±6 °C (max)

used in the self-heating calculation.

11 Bits

Remote Diode Resolution

0.125 °C

8 Bits

Local Diode Resolution

1 °C

Conversion Time, All Temperature Channels Fastest Setting 38.3 41.1 ms (max)

D− Source Voltage 0.4 V

225 µA (max)

D+

− V

D−

) = +0.65 V; High Current 172

Diode Source Current 100 µA (min)

Low Current 10.75 µA

Diode Source Current Ratio 16

(1) “Typicals” are at T

= 25°C and represent most likely parametric norm. They are to be used as general reference values not for critical

design calculations.

(2) Limits are guaranteed to National's AOQL (Average Outgoing Quality Level).

(3) The accuracy of the LM96163 is guaranteed when using a typical thermal diode of an Intel processor on a 45 nm process, as selected

in the Remote Diode Model Select register. See Typical Performance Characteristics for performance with Intel processor on 65 nm or

90 nm process.

(4) Local temperature accuracy does not include the effects of self-heating. The rise in temperature due to self-heating is the product of the

internal power dissipation of the LM96163 and the thermal resistance.

(5) Thermal resistance junction to ambient when attached to a 2 layer 4"x3" printed circuit board with copper thickness of 2oz. as described

in JEDEC specification EIA/JESD51-3 is 137°C/W. Thermal resistance junction to ambient when attached to a 4 layer 4"x3" printed

circuit board with copper thickness 2oz./1oz./1oz/2oz. and 4 thermal vias as described in JEDEC specification EIA/JESD51-7 is

40.3°C/W.

Operating Electrical Characteristics

Symbol Parameter Conditions Typ

(1)

Limits

(2)

Units

2.8 V (max)

POR

Power-On-Reset Threshold Voltage

1.6 V (min)

SMBus Inactive, 13 Hz

1.1 1.6 mA (max)

Conversion Rate

Supply Current

(3)

SMBus Inactive, 0.8 Hz

456 825 µA (max)

Conversion Rate

STANDBY Mode 416 700 µA (max)

(1) “Typicals” are at T

= 25°C and represent most likely parametric norm. They are to be used as general reference values not for critical

design calculations.

(2) Limits are guaranteed to National's AOQL (Average Outgoing Quality Level).

(3) The supply current will not increase substantially with an SMBus transaction.

Product Folder Links: LM96163

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