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TMP400
  • TMP400

TMP400

ACTIVE

Remote and Local Temperature Sensor with N-Factor and Series-R Correction in QSSOP-16

Texas Instruments TMP400 Product Info

1 April 2026 3

Parameters

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

Supply current (max) (µA)

38

Temp resolution (max) (bps)

12

Remote channels (#)

1

Addresses

9

Rating

Catalog

Package

SSOP (DBQ)-16-29.4 mm² 4.9 x 6

Features

  • ±1°C REMOTE DIODE SENSOR
  • ±1°C LOCAL TEMPERATURE SENSOR
  • PROGRAMMABLE NON-IDEALITY FACTOR
  • PROGRAMMABLE SERIES RESISTANCE CANCELLATION
  • ALERT FUNCTION
  • PROGRAMMABLE RESOLUTION: 9 to 12 Bits
  • PROGRAMMABLE THRESHOLD LIMITS
  • TWO-WIRE/SMBus™ SERIAL INTERFACE
  • MINIMUM AND MAXIMUM TEMPERATURE MONITORS
  • MULTIPLE INTERFACE ADDRESSES
  • ALERT PIN CONFIGURATION
  • DIODE FAULT DETECTION
  • 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/FPGA TEMPERATURE MONITORING

DLP is a registered trademark of Texas Instruments.
SMBus is a trademark of Intel Corp.
All other trademarks are the property of their respective owners.

  • ±1°C REMOTE DIODE SENSOR
  • ±1°C LOCAL TEMPERATURE SENSOR
  • PROGRAMMABLE NON-IDEALITY FACTOR
  • PROGRAMMABLE SERIES RESISTANCE CANCELLATION
  • ALERT FUNCTION
  • PROGRAMMABLE RESOLUTION: 9 to 12 Bits
  • PROGRAMMABLE THRESHOLD LIMITS
  • TWO-WIRE/SMBus™ SERIAL INTERFACE
  • MINIMUM AND MAXIMUM TEMPERATURE MONITORS
  • MULTIPLE INTERFACE ADDRESSES
  • ALERT PIN CONFIGURATION
  • DIODE FAULT DETECTION
  • 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/FPGA TEMPERATURE MONITORING

DLP is a registered trademark of Texas Instruments.
SMBus is a trademark of Intel Corp.
All other trademarks are the property of their respective owners.

Description

The TMP400 is a remote temperature sensor monitor 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 TMP400 is customizable with programmable: series resistance cancellation, non-ideality factor, resolution, and threshold limits. Other features are: minimum and maximum temperature monitors, wide remote temperature measurement range (up to +127.9375°C), diode fault detection, and temperature alert function.

The TMP400 is available in a QSSOP-16 package.

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