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 2001-2012 Microchip Technology Inc. DS21498D-page 1

TC1047/TC1047A

Features

• Supply Voltage Range:

- TC1047: 2.7V to 4.4V

- TC1047A: 2.5V to 5.5V

• Wide Temperature Measurement Range:

--40

C to +125

• High Temperature Converter Accuracy:

-± 2

C, Max, at 25°C

• Linear Temperature Slope: 10 mV/°C (typ.)

• Available in 3-Pin SOT-23B Package

• Very Low Supply Current:

-35µA Typical

Applications

• Cellular Phones

• Power Supply Thermal Shutdown

• Temperature-Controlled Fans

• Temperature Measurement/Instrumentation

• Temperature Regulators

• Consumer Electronics

• Portable Battery-Powered Equipment

Block Diagram

General Description

The TC1047 and TC1047A are linear voltage output

temperature sensors whose output voltage is directly

proportional to the measured temperature. The

TC1047 and TC1047A can accurately measure

temperature from -40°C to +125°C. With the TC1047,

the supply voltage can vary between 2.7V and 4.4V.

The power supply range of the TC1047A is from 2.5V

to 5.5V.

The output voltage range for these devices is typically

100 mV at -40°C, 500 mV at 0°C, 750 mV at +25°C and

1.75V at +125°C. A 10 mV/°C voltage slope output

response allows for a predictable temperature

measurement over a wide temperature range. The

TC1047 and TC1047A are packaged in 3-pin SOT-23B

packages, making them ideal for space-critical

applications.

Package Type

TC1047A

= 2.5V to 5.5V

PIC

A/D

Microcontroller

Converter

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

OUT

3-Pin SOT-23B

(NOTE)

TC1047/1047A

Precision Temperature-to-Voltage Converter

Summary of content (12 pages)

PAGE 1
TC1047/TC1047A Precision Temperature-to-Voltage Converter Features General Description • Supply Voltage Range: - TC1047: 2.7V to 4.4V - TC1047A: 2.5V to 5.5V • Wide Temperature Measurement Range: - -40oC to +125oC • High Temperature Converter Accuracy: - ± 2oC, Max, at 25°C • Linear Temperature Slope: 10 mV/°C (typ.
PAGE 2
TC1047/TC1047A 1.0 ELECTRICAL CHARACTERISTICS *Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage 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 Rating conditions for extended periods may affect device reliability. Absolute Maximum Ratings* Supply Voltage ...............................
PAGE 3
TC1047/TC1047A 2.0 TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
PAGE 4
TC1047/TC1047A 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: 4.0 PIN FUNCTION TABLE Pin No. Symbol Description 1 VDD Input Supply Voltage 2 VOUT Temperature Sensor Output Terminal 3 VSS Ground Terminal DETAILED DESCRIPTION The TC1047 and TC1047A have an output voltage that varies linearly with temperature in degrees Celsius. Figure 4-1 shows a plot of the output voltage versus temperature for the TC1047 and TC1047A.
PAGE 5
TC1047/TC1047A 5.0 PACKAGE INFORMATION 5.1 Package Marking Information 3-Pin SOT-23B  1 & 2 = part number code + temperature range and voltage Part Number Code TC1047 AL TC1047A BL 3 = year and quarter code 4 = lot ID number Legend: XX...
PAGE 6
TC1047/TC1047A 3-Lead Plastic Small Outline Transistor (TT) (SOT-23) Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging E E1 2 p1 B n D p 1 a c A f b A2 A1 L Units Dimension Limits n p MIN INCHES* NOM 3 .038 .076 .040 .037 .002 .093 .051 .115 .018 5 .006 .017 5 5 MAX MILLIMETERS NOM 3 0.96 1.92 0.89 1.01 0.88 0.95 0.01 0.06 2.10 2.37 1.20 1.30 2.80 2.92 0.35 0.45 0 5 0.09 0.14 0.37 0.
PAGE 7
TC1047/TC1047A APPENDIX A: REVISION HISTORY Revision D (December 2012) Added a note to each package outline drawing. Revision C (May 2005) The following is the list of modifications: 1. Added Appendix A: Revision History. Revision B (May 2002) Revision A (March 2001) • Original Release of this Document.  2001-2012 Microchip Technology Inc.
PAGE 8
TC1047/TC1047A NOTES: DS21498D-page 8 l  2001-2012 Microchip Technology Inc.
PAGE 9
TC1047/TC1047A PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO.
PAGE 10
TC1047/TC1047A NOTES: DS21498D-page 10  2001-2012 Microchip Technology Inc.
PAGE 11
Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
PAGE 12
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