© 2002 Microchip Technology Inc.

DS21498B-page 1

TC1047/TC1047A

Features

• Supply Voltage Range:

- TC1047: 2.7V to 4.4V

- TC1047A: 2.5V to 5.5V

• Wide Temperature Measurement Range:

• High Temperature Converter Accuracy:

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

• Available in 3-Pin SOT-23B Package

• Very Low Supply Current:

-35

µATypical

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 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

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

1.75V at +125°C. A 10mV/°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.

Block Diagram

Part Number

Package

Temp. Range

TC1047VNB

3-Pin SOT-23B

-40°C to +125°C

TC1047AVNB

3-Pin SOT-23B

-40°C to +125°C

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

3-Pin SOT-23B*

TC1047

12

3

TC1047A

TC1047A

PICmicro

®

A/D

Microcontroller

Converter

Precision Temperature-to-Voltage Converter