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Sensores de temperatura
Interruptores por temperatura

TMP390

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Interruptor de temperatura programable por resistencia, ultrapequeño, de 0.5 µA y doble canal (dispa

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TMP390

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Detalles del producto

Setpoint type Resistor Programmable Setpoint value (°C) -50 to 25, 30 to 124 Operating temperature range (°C) -55 to 130 Accuracy over temp range (max) (°C) 1.5 Output type Open drain Supply voltage (min) (V) 1.62 Supply voltage (max) (V) 5.5 Supply current (typ) (µA) 0.5 Number of comparator channels 2 Features Built-in hysteresis Rating Catalog Interface type Switch
Setpoint type Resistor Programmable Setpoint value (°C) -50 to 25, 30 to 124 Operating temperature range (°C) -55 to 130 Accuracy over temp range (max) (°C) 1.5 Output type Open drain Supply voltage (min) (V) 1.62 Supply voltage (max) (V) 5.5 Supply current (typ) (µA) 0.5 Number of comparator channels 2 Features Built-in hysteresis Rating Catalog Interface type Switch
SOT-5X3 (DRL) 6 2.56 mm² 1.6 x 1.6
  • Resistor programmable temperature trip points and hysteresis options
    • Resistor tolerances contribute zero error
    • Hysteresis options: 5°C, 10°C and 20°C
  • Separate outputs for overtemperature or undertemperature detection
    • Channel A (overtemperature): +30 to +124°C, 2°C steps
    • Channel B (undertemperature): –50 to +25°C, 5°C steps
  • Accuracy level options (maximum at −55°C to +130°C):
    • A2 Level: ±3.0°C (±1.5°C from 0°C to +70°C)
    • A3 Level: ±3.5°C (±2.0°C from 0°C to +70°C)
  • Ultra-low power consumption: 0.5 µA typical at 25°C
  • Supply voltage: 1.62 to 5.5 V
  • Open-drain outputs
  • Trip test function enables in-system testing
  • Available in a SOT-563 (1.60-mm × 1.20-mm), 6-pin package
  • Resistor programmable temperature trip points and hysteresis options
    • Resistor tolerances contribute zero error
    • Hysteresis options: 5°C, 10°C and 20°C
  • Separate outputs for overtemperature or undertemperature detection
    • Channel A (overtemperature): +30 to +124°C, 2°C steps
    • Channel B (undertemperature): –50 to +25°C, 5°C steps
  • Accuracy level options (maximum at −55°C to +130°C):
    • A2 Level: ±3.0°C (±1.5°C from 0°C to +70°C)
    • A3 Level: ±3.5°C (±2.0°C from 0°C to +70°C)
  • Ultra-low power consumption: 0.5 µA typical at 25°C
  • Supply voltage: 1.62 to 5.5 V
  • Open-drain outputs
  • Trip test function enables in-system testing
  • Available in a SOT-563 (1.60-mm × 1.20-mm), 6-pin package

The TMP390 device is part of a family of ultra-low power, dual channel, resistor programmable temperature switches that enable protection and detection of system thermal events from –50°C to 130°C. The TMP390 offers independent overtemperature (hot) and undertemperature (cold) detection . The trip temperatures (TTRIP) and thermal hysteresis (THYST) options are programmed by two E96-series resistors (1% tolerance) on the SETA and SETB pins. Channel A resistors can range from 1.05 KΩ to 909 KΩ, representing one of 48 unique values. Channel B resistors can range from 10.5 KΩ to 909 KΩ

The value of the resistor to ground on SETA input sets the TTRIP threshold of Channel A. The value of the resistor to ground on SETB input sets the TTRIP threshold of Channel B, as well as the THYST options of 5°C, or 10°C for both channels, to prevent undesired digital output switching. When the SETB input is connected to ground, Channel A operates with 20°C hysteresis. Resistors accuracy has no impact to TTRIP accuracy.

To enable customer board-level manufacturing, the TMP390 supports a trip test function where the digital outputs are activated by exercising the SETA or SETB pin.

The TMP390 device is part of a family of ultra-low power, dual channel, resistor programmable temperature switches that enable protection and detection of system thermal events from –50°C to 130°C. The TMP390 offers independent overtemperature (hot) and undertemperature (cold) detection . The trip temperatures (TTRIP) and thermal hysteresis (THYST) options are programmed by two E96-series resistors (1% tolerance) on the SETA and SETB pins. Channel A resistors can range from 1.05 KΩ to 909 KΩ, representing one of 48 unique values. Channel B resistors can range from 10.5 KΩ to 909 KΩ

The value of the resistor to ground on SETA input sets the TTRIP threshold of Channel A. The value of the resistor to ground on SETB input sets the TTRIP threshold of Channel B, as well as the THYST options of 5°C, or 10°C for both channels, to prevent undesired digital output switching. When the SETB input is connected to ground, Channel A operates with 20°C hysteresis. Resistors accuracy has no impact to TTRIP accuracy.

To enable customer board-level manufacturing, the TMP390 supports a trip test function where the digital outputs are activated by exercising the SETA or SETB pin.
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Documentación técnica

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* Data sheet TMP390 Ultra-Small Dual-Channel 0.5-μA Resistor-Programmable Temperature Switch datasheet (Rev. A) 31 jul 2020
Application brief Improving System Reliability in Auto and Ind. Cameras w/ AccurateTemp. Sensing PDF | HTML 03 ene 2022
Application note System Optimization Through Integrated Solutions for Temp. Threshold Detection PDF | HTML 13 jul 2021
Certificate TMP390EVM EU Declaration of Conformity (DoC) 28 abr 2020
E-book E-book: An engineer’s guide to industrial robot designs 12 feb 2020
Technical article Protect outdoor cameras from extreme weather with a temperature switch PDF | HTML 13 ene 2020
Application brief Self Diagnostics and Environmental Sensing in IP Network Cameras 10 oct 2019
Technical article Driving industrial innovation with small-size sensors PDF | HTML 12 sep 2019
EVM User's guide TMP390EVM User's Guide PDF | HTML 13 sep 2018

Diseño y desarrollo

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Placa de evaluación

TMP390EVM — Módulo de evaluación TMP390 de interruptor de temperatura programable por resistencia de disparo dob

The TMP390 evaluation module (EVM) is a plug-and-play system to test and evaluate the TMP390 analog temperature switch. TMP390EVM features resistor-programmable inputs for the dual-channel switch with both hot and cold trip settings.

The EVM can be plugged into a USB port to supply power to the (...)

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