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TMP431

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Remote and Local Temperature Sensor with Automatic Beta, N-Factor and Series-R Correction

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Data sheet

TMP431

ACTIVE
Data sheet Order now

Product details

Local sensor accuracy (max) 1 Type Remote Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 2.7 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT, One-shot conversion Supply current (max) (µA) 45 Temp resolution (max) (bps) 12 Remote channels (#) 1 Addresses 2 Rating Catalog
Local sensor accuracy (max) 1 Type Remote Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 2.7 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT, One-shot conversion Supply current (max) (µA) 45 Temp resolution (max) (bps) 12 Remote channels (#) 1 Addresses 2 Rating Catalog
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • ±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
  • ±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

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 device 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.

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 device 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.
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Technical documentation

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Type Title Date
* Data sheet TMP43x ±1°C Temperature Sensor With Series-R, η-Factor, and Automatic Beta Compensation datasheet (Rev. I) PDF | HTML 15 Oct 2019
Application note How to Read and Interpret Digital Temperature Sensor Output Data PDF | HTML 12 Apr 2024
Application brief Improving System Reliability in Auto and Ind. Cameras w/ AccurateTemp. Sensing PDF | HTML 03 Jan 2022

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Driver or library

TMP401SW-LINUX — Linux Driver for TMP401

The Linux driver supports the TMP401 series of Remote and Local Temp Sensors. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:
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Simulation model

TMP4xx Family IBIS Model (Rev. A)

SBOM410A.ZIP (60 KB) - IBIS Model
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Calculation tool

SBOC594 — Remote Temperature Sensor Calibration Tool

Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
TMP400 — Remote and Local Temperature Sensor with N-Factor and Series-R Correction in QSSOP-16 TMP411 — Remote and local temperature sensor with N-factor and series resistance correction TMP421 — Remote and Local Temperature Sensor with N-Factor and Series-R Correction in WCSP TMP422 — Dual Remote and Local Temperature Sensor with N-Factor and Series-R Correction in WCSP TMP423 — Triple Remote and Local Temperature Sensor with N-Factor and Series-R Correction TMP431 — Remote and Local Temperature Sensor with Automatic Beta, N-Factor and Series-R Correction TMP432 — Dual Remote and Local Temp Sensor with Automatic Beta, N-Factor and Series-R Correction TMP441 — Multi-Address Remote and Local Temp Sensor with Auto Beta, N-Factor and Series-R Correction in SOT23 TMP451 — 1.7-V remote and local temperature sensor with N-factor, filtering and series-R correction TMP461 — High accuracy remote and local temperature sensor with pin-programmable bus address TMP464 — 5-Channel (4-Remote and 1-Local) High-Accuracy Remote and Local Temperature Sensor TMP468 — ±0.75⁰C High-Accuracy Multi-channel Remote and Local Temperature Sensor
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Package Pins CAD symbols, footprints & 3D models
VSSOP (DGK) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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