Texas Instruments TMP390EVM

Overview

The TMP390EVM from Texas Instruments is a USB-powered evaluation module for the TMP390 dual-trip, resistor-programmable temperature switch. It enables immediate functional validation of overtemperature (54°C) and undertemperature (25°C) detection with 5°C hysteresis, open-drain outputs, LED status indicators, and a perforated breakout board for prototyping in thermal monitoring systems.

For engineers reviewing the TMP390EVM datasheet, TMP390EVM hardware setup, TMP390EVM application in thermal protection circuits, or TMP390EVM alternative evaluation platforms, this page delivers verified board-level specifications, power configuration options, manual trip test capability, breakout interface details, and supply-chain support for rapid thermal sensor integration.

Technical Context

The TMP390EVM implements the TMP390A2DRLR IC in a ready-to-use form factor with USB-powered +5 V input regulated to +3.3 V via TLV70033DCKR LDO. It supports manual trip testing via push buttons S1/S2 and visual output confirmation through red (OUTA) and green (OUTB) LEDs.

Power flexibility includes onboard USB operation (J2) or external supply (2.2–5.5 V at J1 pin 2), while the perforated breakout section (J3) exposes SETA, SETB, OUTA, OUTB, VDD, and GND with high-temp-rated components (150°C). Resistor-programmable trip points use E96-series values (1.05 kΩ–909 kΩ) for precise thermal thresholds.

Key Specifications

Availability

TMP390EVM is available at Aetrix Electronics and suitable for thermal event monitoring, overtemperature shutdown validation, embedded system prototyping, and dual-threshold sensor qualification requiring stable component supply and traceable sourcing.

Supply support for TMP390EVM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in precision analog, power management, and sensing technologies since 1930.

The TMP390EVM belongs to TI's temperature sensor evaluation platform family, designed specifically to accelerate development of resistor-programmable thermal switches in industrial, automotive, and computing applications where dual-threshold detection and rapid hardware validation are critical.

FAQ

What is the primary function of the TMP390EVM?

The TMP390EVM is an evaluation module that enables hardware validation of the TMP390 dual-trip temperature switch. It provides immediate out-of-box functionality for testing overtemperature and undertemperature detection, manual trip/reset via push buttons, visual LED feedback, and flexible breakout for integration into existing systems - all without software or calibration. The TMP390EVM directly interfaces with the TMP390A2DRLR IC to demonstrate real-world thermal switching behavior.

Does the TMP390EVM require external programming or firmware?

No, the TMP390EVM requires no external programming or firmware. Trip points are set solely by physical resistors (R3 and R5 pre-populated for +54°C and +25°C), and all functionality - including LED indication, manual trip testing, and USB-powered operation - is implemented in hardware. The TMP390EVM operates as a self-contained analog thermal evaluation tool, with the TMP390A2DRLR IC performing all sensing and switching autonomously.

Can the TMP390EVM be used outside a USB port?

Yes, the TMP390EVM supports external power from 2.2 V to 5.5 V applied to J1 pin 2, bypassing the USB input. This allows standalone operation when the perforated breakout section is separated or when integrating the board into non-USB test environments. The TMP390EVM maintains full functionality - including LED status, manual test buttons, and resistor-programmable thresholds - under external supply, with the TLV70033DCKR LDO ensuring stable +3.3 V for the TMP390A2DRLR.

How does the hysteresis work on the TMP390EVM?

Hysteresis on the TMP390EVM is fixed at 5°C and implemented by the TMP390A2DRLR IC's internal architecture. When temperature reaches the hot trip point (+54°C), OUTA goes low and remains low until temperature falls to +49°C. Similarly, at the cold trip point (+25°C), OUTB goes low and returns high only above +30°C. This prevents output oscillation near threshold and is determined by the resistor pair (R3/R5); no additional components or configuration are needed on the TMP390EVM.

What components are included in the TMP390EVM kit?

The TMP390EVM kit includes one pre-assembled evaluation board (TMP390EVM PCB), one USB cable extender, and documentation (SNIU033 User's Guide). The board integrates the TMP390A2DRLR IC, TLV70033DCKR LDO, SN74LVC2G240D buffer, two push buttons (S1/S2), red/green LEDs (D3/D4), pre-soldered trip-setting resistors (R3 = 5.90 kΩ, R5 = 10.5 kΩ), and a perforated breakout section with exposed terminals - all shipped ready for immediate evaluation of the TMP390 device.