Datasheet TC1046VNB Datasheet (Microchip Technology)

TC1046

High Precision Temperature -to-Voltage Converter

Features

• Supply VoltageRange: 2.7V to 4.4V

• Wide Temperature Measurement Range:

o

-40

Cto+125οC

• High Temperature Converter Accuracy:

o

±2

C, Max, at 25°C

o

• Linear Temperature Slope: 6.25mV/

• Very Low Supply Current: 35µATypical

• Small 3-Pin SOT-23B Package

C

Applications

• Cellular Phones

• Power Supply Thermal Shutdown

• Temperature Controlled Fans

• Temperature Measurement/Instrumentation

• Temperature Regulators

• Consumer Electronics

• Portable Battery Powered Equipment

Device Selection Table

Part Number Package Temp. Range

TC1046VNB 3-Pin SOT-23B -40°C to +125°C

General Description

The TC1046 is a linear output temperature sensor
whose output voltage is directly proportional to
measured temperature. The TC1046 can accurately
measure temperature from -40°C to +125°C.

The output voltage range for these devices is typically
174mV at -40°C,424mV at 0°C, 580 mV at +25°C, and
1205mV at +125°C. A 6.25mV/°C voltage slope allows
for the wide temperature range.

The TC1046 is packagedin a 3-Pin SOT-23B package,
making them ideal for space critical applications.

Functional Block Diagram

V

= 2.5V to 5.5V

DD

®

A/D

1

V

DD

V

TC1046

V

SS

3

OUT

PICmicro

Microcontroller

2

Converter

Package Type

3-Pin SOT-23B*

V

SS

3

TC1046

V

2

OUT

1

V

DD

Note: *3-Pin SOT-23B is equivalent to JEDEC TO-236



2002 Microchip TechnologyInc. DS21496B-page 1

TC1046

1.0 ELECTRICAL
CHARACTERISTICS

Absolute Maximum Ratings*

Supply Voltage ......................................................+7V

*Stresses above those listed under "Absolute Maximum Rat­ings"maycause permanentdamage to the device.These are
stress ratings only and functional operation of the device at
these or any other conditions above those indicated in the
operation sections of the specifications is not implied. Expo­sure to Absolute Maximum R ating conditions for extended
periodsmay affectdevice reliability.

Voltage on Any Pin with Respect to Supplies:

.................................................V

-0.3 to VDD+0.3V

SS

Operating Temperature ......................-40°C to +125°C

StorageTemperature Range..............-55°C to +150°C

TC1046 ELECTRICAL SPECIFICATIONS

Electrical Characteristics: These specifications apply for the entire supply voltage range and for TA= -40°C to +125°C, unless

otherwise specified.

Symbol Parameter Min Typ Max Units Test Conditions

V

DD

I

Q

A

V

TMP

V

OUT

I

OUT

Supply Voltage 2.7 — 4.4 V
Supply Current, Operating — 35 60 µA
Average Slope of Output Voltage — 6.25 — mV/°C
T emperature Accuracy at 25°C -2

ACY

Output Voltage —

Output Source and Sink Current 100 — — µA

-3
—

568

1187

±0.5
±0.5

1.0

174
580

1205

193
592

1224

+2
+3

—

°C
°C
°C

mV
mV
mV

TA=25°C
T

= +125°C

A

T

=-40°C

A

T

=-40°C

A

T

= 25°C

A

T

= +125°C

A

2.0 PIN DESCRIPTIONS

ThedescriptionsofthepinsarelistedinTable2-1

TABLE 2-1: PIN FUNCTION TABLE

Pin Num ber

(3-Pin SOT-23B)

1V
2V
3V

Symbol Description

DD

OUT

SS

Input Supply Voltage
Temperature Sensor Output
Ground

DS21496B-page 2



2002 Microchip TechnologyInc.

3.0 DETAILED DESCRIPTION

)

The TC1046 has an output voltage that varies linearly
with temperature in degrees Celsius. See Figure 3-1,
“Output Voltage versus Temperature” for the TC1046.
The temperature slope is fixed at 6.25mV/°C and the
output voltage at 0°C is 424mV.

FIGURE 3-1: OUTPUT VOLTAGE VS. TEMPERATURE

V

= (6.25 mV/ (˚C) (Temperature (˚C) + 424mV

OUT

1.20525

1.174

1.049

0.924

0.799

0.674

(Volts)

OUT

0.549

V

0.424

0.299

0.174

TC1046

-40

-30

-20 -10

0

10 20

30

50

40

TEMPERATURE (˚C

100

80

60

70

90

110 120 125



2002 Microchip TechnologyInc DS21496B-page 3

TC1046

0

)

4.0 TYPICAL CHARACTERISTICS

Note: The graphs and tables provided following this note are a statisticalsummary based on a limited number of

samplesandareprovidedforinformational purposesonly.Theperformancecharacteristicslistedhereinare
not tested or guaranteed. In some gr aphs or tables, the data presented may be outside the specified
operating range ( e.g., outside specified power supply range) and therefore outsidethe warranted range.

Temperature Accuracy vs. Temperature

4.0

3.0

V

C)

˚

-1.0

TEMP. ACCURACY (

-2.0

-3.0

2.0

1.0

0.0

V

DD

= 2.5V

DD

= 5.5V

(µA)

DD

I

-4.0

60.0

50.0

40.0

30.0

20.0

10.0

0.0

-50

–40

-40

–25

-30

-20 -10

–10 5

20

10

0

30

40

TEMPERATURE (˚C

60

50

80

70

90

Supply Current IDD vs. Temperature

V

DD

=5.5V

V

DD

= 2.5V

20 35 50

TEMPERATURE (˚C)

65

80

100

110

95

120

130

110 125

14

DS21496B-page 4



2002 Microchip TechnologyInc.

5.0 PACKAGING INFORMATION

5.1 Package Marking Information

1 & 2 = part number code + temperature range and
voltage (two letter code)

Ex: 1046VNB = AK
3 = Year and two-month period code

4 = Lot ID number

5.2 Taping Form

TC1046

Component Taping Orientation for 3-Pin SOT-23B (JEDEC TO-236) Devices

User Direction of Feed

Device

Marking

W

PIN 1

Standard Reel Component Orientation
For TR Suffix Device
(Mark Right Side Up)

Carrier Tape, Number of Components Per Reel and Reel Size

Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size

3-Pin SOT-23B 8 mm 4 mm 3000 7 in

P



2002 Microchip TechnologyInc DS21496B-page 5

TC1046

)

)

)

)

)

)

)

)

)

)

)

)

)

)

)

)

)

)

)

)

8

.

5.3 Package Dimensions

3-Pin SOT-23B

.021 (0.54
.015 (0.37

.040 (1.02
.031 (0.79

.104 (2.64
.083 (2.10

.004 (0.10
.001 (0.02

.024 (0.60
.017 (0.44

.120 (3.05
.105 (2.67

.081 (2.05
.070 (1.78

.055 (1.40
.047 (1.20

MAX

.007 (0.18
.003 (0.08

.010 (0.25
.005 (0.13

Dimensions: inches (mm)

DS21496B-page 6



2002 Microchip TechnologyInc.

TC1046

SALES AND SUPPORT

Data Sheets

Products supportedby a preliminaryData Sheet may have an erratasheet describingminoroperationaldifferences and recom­mendedworkarounds.To determine if an erratasheetexists for a particulardevice, please contactone of the following:

1. Your local Microchip sales office

2. TheMicrochip Corporate Literature Center U.S. FAX:[phone]

3. The Microchip Worldwide Site (www.microchip.com)
Pleasespecify which device, revision of silicon and Data Sheet (includeLiterature #) you are using.

New Customer Notification System

Register on our web site (www.microchip.com/cn) to receive the most currentinformationon our products.



2002 Microchip TechnologyInc. DS21496B-page 7

TC1046

NOTES:

DS21496B-page 8



2002 Microchip TechnologyInc.

TC1046

Information contained in this publication regarding device
applications and the like is intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip’s products as critical com­ponents in life support systems is not authorized except with
express written approval by Microchip. No licenses are con­veyed, implicitly or otherwise, under any intellectual property
rights.

Trademarks

The Microchip name and logo, the Microchip logo, FilterLab,
K

EELOQ,microID,MPLAB,PIC,PICmicro,PICMASTER,

PICSTART, PRO MA TE, SEEVAL and The Embedded Control
SolutionsCompany areregiste red trademarksof MicrochipTech­nologyIncorp or ated in the U.S.A. and other countries .

dsPIC, ECONOMONITOR, F anSense, FlexROM, fuzzyLA B,
In-Circuit Serial Programming, ICSP, ICEPIC, microPort,
Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM,
MXDEV, PICC, PICDEM, PICDE M.net, rfPIC, Select Mode
and TotalEndurancearetrademarksofMicrochipTechnology
Incorporated in the U.S.A.

Serialized Quick Turn Programming (SQTP) is a service mark
of Microchip TechnologyIncorporated in t he U.S.A.

All other trademarks mentioned herein are property of their
respective companies.

© 2002, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.

Printed on recycled paper.

Microchip received QS-9000 quality system
certification for its worldwide headquarters,
design and wafer fabrication facilities in
Chandler and Tempe, Arizona in July 1999
and Mountain View, California in March 2002.
The Company’s quality system processes and
procedures are QS-9000 compliant for its

®

PICmicro
devices, Serial EEPROMs, microperipherals,
non-volatile memory and analog products. In
addition, Microchip’s quality system for the
design and manufacture of development
systemsisISO 9001certified.



2002 Microchip TechnologyInc. DS21496B-page 9

8-bit MCUs, KEELOQ®code hopping

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DS21496B-page 10

*DS21496B*



2002 Microchip Technology Inc.