TMP431 Datasheet, PDF (1/47 Pages) Texas Instruments – ±1°C TEMPERATURE SENSOR with Series-R, η-Factor, and Automatic Beta Compensation

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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
•1 ±1°C Remote Diode Sensor
• ±1°C Local Temperature Sensor
• Automatic Beta Compensation
• η-Factor Correction
• Programmable Threshold Limits
• Two-Wire/SMBus™ Serial Interface
• Minimum and Maximum Temperature Monitors
• Multiple Interface Addresses
• ALERT/THERM2 Pin Configuration
• Diode Fault Detection
2 Applications
• LCD/DLP^®/LCOS Projectors
• Servers
• Industrial Controllers
• Central Office Telecom Equipment
• Desktop and Notebook Computers
• Storage Area Networks (SAN)
• Industrial And Medical Equipment
• Processor and FPGA Temperature Monitoring
3 Description
The TMP431 and TMP432 are remote temperature
sensor monitors with a built-in local temperature
sensor. The remote temperature sensor diode-
connected transistors are typically low-cost, NPN- or
PNP-type transistors or diodes that are an integral
part of microcontrollers, microprocessors, or FPGAs.
Remote accuracy is ±1°C for multiple IC
manufacturers, with no calibration needed. The Two-
Wire serial interface accepts SMBus write byte, read
byte, send byte, and receive byte commands to
program the alarm thresholds and to read
temperature data.
The TMP43x include beta compensation (correction),
series resistance cancellation, programmable non-
ideality factor, programmable resolution,
programmable threshold limits, minimum and
maximum temperature monitors, wide remote
temperature measurement range (up to 150°C), and
diode fault detection and temperature alert function.
The TMP431 is available in a VSSOP-8 package and
the TMP432 is available in a VSSOP-10 package.
Device Information⁽¹⁾
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
+5V
+5V
TMP431
1
V+
2
DXP
3 _DXN
4
THERM
5
GND
8
SCL
7
SDA
ALERT/THERM2
6
SMBus
Controller
TMP432
1
V+
2
DXP1
3 _DXN1
10
SCL
9
SDA
4
DXP2
5
DXN2
ALERT/ 8
THERM2
GND
6
7
THERM
SMBus
Controller
One Channel Local
One Channel Remote
One Channel Local
Two Channels Remote
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.