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 2001-2012 Microchip Technology Inc. DS21496C-page 1

TC1046

Features

• Supply Voltage Range: 2.7V to 4.4V

• Wide Temperature Measurement Range:

-40

C to +125



• High Temperature Converter Accuracy:

± 2

C, Max, at 25°C

• Linear Temperature Slope: 6.25mV/

• Very Low Supply Current: 35A Typical

• Small 3-Pin SOT-23B Package

Applications

• Cellular Phones

• Power Supply Thermal Shutdown

• Temperature Controlled Fans

• Temperature Measurement/Instrumentation

• Temperature Regulators

• Consumer Electronics

• Portable Battery Powered Equipment

Device Selection Table

Package Type

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 packaged in a 3-Pin SOT-23B package,

making them ideal for space critical applications.

Functional Block Diagram

Part Number Package Temp. Range

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

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

OUT

3-Pin SOT-23B*

TC1046

= 2.5V to 5.5V

OUT

PICmicro

A/D

Converter

Microcontroller

High Precision Temperature-to-Voltage Converter

Summary of content (12 pages)

PAGE 1
TC1046 High Precision Temperature-to-Voltage Converter Features General Description • Supply Voltage Range: 2.7V to 4.4V • Wide Temperature Measurement Range: -40oC to +125C • High Temperature Converter Accuracy: ± 2oC, Max, at 25°C • Linear Temperature Slope: 6.25mV/oC • Very Low Supply Current: 35A Typical • Small 3-Pin SOT-23B Package The TC1046 is a linear output temperature sensor whose output voltage is directly proportional to measured temperature.
PAGE 2
TC1046 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
TC1046 2.
PAGE 4
TC1046 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 VOUT = (6.25 mV/ (˚C) (Temperature (˚C) + 424mV 1.20525 1.174 1.049 VOUT (Volts) 0.924 0.799 0.674 0.549 0.424 0.299 0.
PAGE 5
TC1046 4.0 Note: TYPICAL CHARACTERISTICS 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. Temperature Accuracy vs. Temperature 4.0 TEMP.
PAGE 6
TC1046 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.
PAGE 7
TC1046 5.3 Package Dimensions Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 3-Pin SOT-23B .021 (0.54) .015 (0.37) .055 (1.40) .047 (1.20) .104 (2.64) .083 (2.10) .024 (0.60) .017 (0.44) .120 (3.05) .105 (2.67) .007 (0.18) .003 (0.08) 8° MAX. .040 (1.02) .031 (0.79) .004 (0.10) .001 (0.02) .081 (2.05) .070 (1.78) .010 (0.25) .005 (0.
PAGE 8
TC1046 6.0 REVISION HISTORY Revision C (December 2012) Added a note to each package outline drawing. DS21496C-page 8 2001-2012 Microchip Technology Inc.
PAGE 9
TC1046 SALES AND SUPPORT Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. 2. Your local Microchip sales office The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
PAGE 10
TC1046 NOTES: DS21496C-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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