1
FEATURES DESCRIPTION
APPLICATIONS
TMP441 TMP442
+5V
1ChannelLocal
1ChannelRemote
1ChannelLocal
2ChannelsRemote
SCL
GND
SDA
V+
SMBus
Controller
8
5
7
6
DXP
DXN
A1
A0
1
2
3
4
DXP1
DXN1
DXP2
DXN2
1
2
3
4
TMP441
TMP442
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.............................................................................................................................................. SBOS425A – DECEMBER 2008 – REVISED MARCH 2009
± 1 ° C TEMPERATURE SENSOR
with Automatic Beta Compensation,
Series-R, and η -Factor in a SOT23-8
234
• SOT23-8 PACKAGE
The TMP441 and TMP442 are remote temperature
monitors with a built-in local temperature sensor.
• ± 1 ° C REMOTE DIODE SENSOR (MAX)
Remote temperature sensor diode-connected
• ± 1 ° C LOCAL TEMPERATURE SENSOR (MAX)
transistors are typically low-cost, NPN- or PNP-type
• AUTOMATIC BETA COMPENSATION
transistors or diodes that are an integral part of
• SERIES RESISTANCE CANCELLATION microcontrollers, microprocessors, or
field-programmable gate arrays (FPGAs).
• η -FACTOR CORRECTION
Remote accuracy is ± 1 ° C for multiple IC
• TWO-WIRE/ SMBus™ SERIAL INTERFACE
manufacturers, with no calibration needed. The
• MULTIPLE INTERFACE ADDRESSES
Two-Wire serial interface accepts SMBus write byte,
• DIODE FAULT DETECTION
read byte, send byte, and receive byte commands to
• RoHS-COMPLIANT AND NO Sb/Br configure the device.
• TRANSISTOR AND DIODE MODEL
The TMP441 has a single remote temperature
OPERATION
monitor with address pins. The TMP442 has dual
remote temperature monitors, and is available with
two different interface addresses. All versions include
automatic beta compensation (correction), series
• PROCESSOR/FPGA TEMPERATURE
resistance cancellation, programmable non-ideality
MONITORING
factor ( η -factor), wide remote temperature
• LCD/ DLP
®
/LCOS PROJECTORS
measurement range (up to +150 ° C), and diode fault
• SERVERS
detection.
• CENTRAL OFFICE TELECOM EQUIPMENT
The TMP441 and TMP442 are both available in an
• STORAGE AREA NETWORKS (SAN)
8-lead, SOT23 package.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2 DLP is a registered trademark of Texas Instruments.
3 SMBus is a trademark of Intel Corporation.
4 All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008 – 2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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