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TMP392

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TMP392 Dual-channel (hot & warm), resistor-programmable temperature switch

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Data sheet

TMP392

ACTIVE
Data sheet Order now

Product details

Setpoint type Resistor Programmable Setpoint value (°C) 30 to 105, 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) 30 to 105, 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
  • Dual outputs for overtemperature detection
    • Channel A (overtemperature-hot): +30 to +124°C, 2°C steps
    • Channel B (overtemperature-warm): +30 to +105°C, 5°C steps
  • Accuracy level options (maximum at +30°C to +130°C):
    • A2 Level: ±3.0°C (±1.5°C from +30°C to +70°C)
    • A3 Level: ±3.5°C (±2.0°C from +30°C to +70°C)
  • Ultra-low power consumption: 0.5µA typical at 25°C
  • Supply voltage: 1.62 to 5.5V
  • Open-drain outputs
  • Trip test function enables in-system testing
  • Available in a SOT-563 (1.60mm × 1.20mm), 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
  • Dual outputs for overtemperature detection
    • Channel A (overtemperature-hot): +30 to +124°C, 2°C steps
    • Channel B (overtemperature-warm): +30 to +105°C, 5°C steps
  • Accuracy level options (maximum at +30°C to +130°C):
    • A2 Level: ±3.0°C (±1.5°C from +30°C to +70°C)
    • A3 Level: ±3.5°C (±2.0°C from +30°C to +70°C)
  • Ultra-low power consumption: 0.5µA typical at 25°C
  • Supply voltage: 1.62 to 5.5V
  • Open-drain outputs
  • Trip test function enables in-system testing
  • Available in a SOT-563 (1.60mm × 1.20mm), 6-pin package

The TMP392 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 30°C to 130°C. The TMP392 offers dual overtemperature (hot and warm) 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 1.05KΩ to 909KΩ, representing one of 48 unique values. Channel B resistors can range from 10.5KΩ to 909KΩ

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 TMP392 supports a trip test function where the digital outputs are activated by exercising the SETA or SETB pin.

The TMP392 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 30°C to 130°C. The TMP392 offers dual overtemperature (hot and warm) 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 1.05KΩ to 909KΩ, representing one of 48 unique values. Channel B resistors can range from 10.5KΩ to 909KΩ

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 TMP392 supports a trip test function where the digital outputs are activated by exercising the SETA or SETB pin.
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Technical documentation

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* Data sheet TMP392 Ultra-Small, Dual-Channel (Hot and Warm Trip) , 0.5µA, Resistor-Programmable Temperature Switch datasheet (Rev. A) PDF | HTML 25 Feb 2026
Application note System Optimization Through Integrated Solutions for Temp. Threshold Detection PDF | HTML 13 Jul 2021
Certificate TMP392EVM EU Declaration of Conformity (DoC) 06 May 2020

Design & development

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

Evaluation board

TMP390EVM — TMP390 dual-trip resistor-programmable temperature switch evaluation module

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 (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

TMP392EVM — TMP392 dual-trip, resistor-programmable temperature switch evaluation module

The TMP392 evaluation kit is a plug and play system to test and evaluate the TMP392 analog temperature switch. The EVM features resistor-programmable inputs for the dual-channel switch with both hot and warm trip settings to protect two different over-temperature conditions or be used as an (...)
User guide: PDF
Not available on TI.com
Reference designs

TIDA-050059 — Overcurrent and overtemperature protection for solid-state relays reference design

This reference design shows how to achieve overcurrent and overtemperature protection for a solid-state relay. The reference design features the TPSI3050-Q1 5-kVRMS reinforced isolated switch driver. TPSI3050-Q1 device integrates a laminate transformer to achieve isolation while transferring signal (...)
Design guide: PDF
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SOT-5X3 (DRL) 6 Ultra Librarian
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