2024年5月10日发(作者：)

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LM66

Dual

Output

Internally

Preset

Thermostat

April2000

LM66

DualOutputInternallyPresetThermostat

GeneralDescription

ble

temperaturetrippoints(V

T1

andV

T2

)aregeneratedbydivid-

ingdowntheLM661.250Vbandgapvoltagereferenceusing

66hastwodigitalout-

1goesLOWwhenthetemperatureexceedsT1

andgoesHIGHwhenthethetemperaturegoesbelow

(T1–T

HYST

).Similarly,OUT2goesLOWwhenthetempera-

tureexceedsT2andgoesHIGHwhenthetemperaturegoes

below(T2–T

HYST

).T

HYST

isaninternallyset5˚Ctypicalhys-

teresis.

TheLM66iscurrentlyavailableinan8-leadsmalloutline

package.

nElectronicSystemProtection

Features

n

n

n

n

n

DigitaloutputssupportTTLlogiclevels

Internaltemperaturesensor

2internalcomparatorswithhysteresis

Internalvoltagereference

Currentlyavailablein8-pinSOplasticpackage

KeySpecifications

nPowerSupplyVoltage

nPowerSupplyCurrent

nV

REF

nHysteresisTemperature

nInternalTemperatureSensor

OutputVoltage(+6.20mV/˚CxT)+400mV

±

3˚C(max)

nTemperatureTripPointAccuracy

nT1setpoint+73˚C

nT2setpoint+82˚C

2.7Vto10V

250µA(max)

1.250V

±

1.4%(max)

5˚C

Applications

n

n

n

n

n

n

n

MicroprocessorThermalManagement

Appliances

PortableBatteryPowered3.0Vor5VSystems

FanControl

IndustrialProcessControl

HVACSystems

RemoteTemperatureSensing

SimplifiedBlockDiagramand

ConnectionDiagram

OrderingInformation

TABLE1.

OrderNumber

NSTackage

Number

TransportMedia

LM66CIM-

RLSKB

M08A

BulkRail

LM66CIMX-

RLSKB

M08A

2500UnitsTape

&Reel

DS100854-1

TypicalApplication

DS100854-2

DS100854-3

©

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L

M

6

6

AbsoluteMaximumRatings

(Note1)

InputVoltage

InputCurrentatanypin(Note2)

PackageInputCurrent(Note2)

PackageDissipationatT

A

=25˚C

(Note3)

ESDSusceptibility(Note4)

HumanBodyModel

MachineModel

SolderingInformation

SOPackage(Note5):

12V

5mA

20mA

900mW

1000V

200V

VaporPhase(60seconds)

Infrared(15seconds)

StorageTemperature

215˚C

220˚C

−65˚Cto+150˚C

OperatingRatings

(Note1)

OperatingTemperatureRange

LM66CIM

PositiveSupplyVoltage(V

+

)

MaximumV

OUT1

andV

OUT2

T

MIN

≤T

A

≤T

MAX

−40˚C≤T

A

≤+125˚C

+2.7Vto+10V

+10V

LM66ElectricalCharacteristics

ThefollowingspecificationsapplyforV

+

=2.7V

DC

,andV

REF

loadcurrent=0µcelim-

itsapplyforT

A

=T

J

=T

MIN

toT

MAX

;allotherlimitsT

A

=T

J

=25˚Cunlessotherwisespecified.

Typical

Symbol

TemperatureSensor

TripPointAccuracy(Includes

V

REF

,ComparatorOffset,and

TemperatureSensitivityerrors)

TripPointHysteresisT

A

=+73˚C

T

A

=+82˚C

InternalTemperatureSensitivity

TemperatureSensitivityError+25˚C≤T

A

≤+85˚C

−25˚C≤T

A

≤+125˚C

−40˚C≤T

A

≤−25˚C

OutputImpedance

LineRegulation

−1µA≤I

L

≤+40µA

+3.0V≤V

+

≤+10V,

+25˚C≤T

A

≤+85˚C

+3.0V≤V

+

≤+10V,

−40˚C≤T

A

<

25˚C

+2.7V≤V

+

≤+3.3V

V

REF

Output

V

REF

V

REF

Nominal

V

REF

Error

∆V

REF

/∆V

+

LineRegulation+3.0V≤V

+

≤+10V

+2.7V≤V

+

≤+3.3V

0.13

0.15

1.250VV

6

6

+6.20

4.5

7.5

4.5

7.5

˚C(min)

˚C(max)

˚C(min)

˚C(max)

mV/˚C

˚C(max)

˚C(max)

˚C(max)

Ω(max)

mV/V(max)

mV/V(max)

mV(max)

+25˚C≤T

A

≤+85˚C

ParameterConditions(Note6)

LM66CIM

Limits

(Note7)

Units

(Limits)

±

3˚C(max)

±

3

±

4

±

5

1500

±

0.36

±

0.61

±

2.3

±

1.4

±

17.5

0.21

1.5

%(max)

mV(max)

mV/V(max)

mV(max)

2