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DXN
V+
1
8
7
3
2
SCL
SDA
THERM
+5V
SMBus
Controller
6
GND
ALERTTHERM2/
4
5
OneChannelLocal
OneChannelRemote
TMP431
V+
1
10
9
8
7
SCL
SDA
+5V
SMBus
Controller
6
GND
DXP1
DXN1
3
2
DXP2
DXN2
5
4
OneChannelLocal
TwoChannelsRemote
TMP432
ALERT
THERM2
/
THERM
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TMP431
,
TMP432
SBOS441G –SEPTEMBER 2009–REVISED DECEMBER 2015
TMP43x ±1°C Temperature Sensor With Series-R,
η-Factor, and Automatic Beta Compensation
1 Features 3 Description
The TMP431 and TMP432 are remote temperature
1
• ±1°C Remote Diode Sensor
sensor monitors with a built-in local temperature
• ±1°C Local Temperature Sensor
sensor. The remote temperature sensor diode-
• Automatic Beta Compensation
connected transistors are typically low-cost, NPN- or
PNP-type transistors or diodes that are an integral
• η-Factor Correction
part of microcontrollers, microprocessors, or FPGAs.
• Programmable Threshold Limits
Remote accuracy is ±1°C for multiple IC
• Two-Wire/SMBus™ Serial Interface
manufacturers, with no calibration needed. The Two-
• Minimum and Maximum Temperature Monitors
Wire serial interface accepts SMBus write byte, read
• Multiple Interface Addresses
byte, send byte, and receive byte commands to
program the alarm thresholds and to read
• ALERT/THERM2 Pin Configuration
temperature data.
• Diode Fault Detection
The TMP43x include beta compensation (correction),
2 Applications
series resistance cancellation, programmable non-
ideality factor, programmable resolution,
• LCD/DLP
®
/LCOS Projectors
programmable threshold limits, minimum and
• Servers
maximum temperature monitors, wide remote
temperature measurement range (up to 150°C), and
• Industrial Controllers
diode fault detection and temperature alert function.
• Central Office Telecom Equipment
The TMP431 is available in a VSSOP-8 package and
• Desktop and Notebook Computers
the TMP432 is available in a VSSOP-10 package.
• Storage Area Networks (SAN)
• Industrial And Medical Equipment
Device Information
(1)
• Processor and FPGA Temperature Monitoring
PART NUMBER PACKAGE BODY SIZE (NOM)
TMP431 VSSOP (8) 3.00 mm × 3.00 mm
TMP432 VSSOP (10) 3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematics
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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