Texas Instruments TMP112D0IDPWR

Overview

TMP112D0IDPWR from Texas Instruments is a high-accuracy, low-power digital temperature sensor in an ultra-small X2SON-5 package (0.8 mm × 0.8 mm), delivering ±0.5°C accuracy from –25°C to +85°C at V+ ≥ 1.5 V, 12-bit resolution (0.0625°C LSB), SMBus/I²C/two-wire interface compatibility, and 7.5 µA max active current - deployed in SSD thermal monitoring, industrial PC ambient sensing, and smart speaker thermal protection.

For engineers reviewing the TMP112D0IDPWR datasheet, TMP112D0IDPWR pinout, TMP112D0IDPWR application, or TMP112D0IDPWR equivalent, this page delivers verified electrical specs, validated X2SON-5 pin functions, confirmed accuracy vs. temperature profiles, and real-world thermal management use cases - all grounded in TI's SBOS473L production data sheet.

Technical Context

The TMP112D0IDPWR implements a precision diode-based temperature sensing element with on-chip 12-bit ADC and digital conversion logic, supporting four programmable conversion rates (0.25–8 Hz) and SMBus alert functionality. Its X2SON-5 package integrates GND, SCL, ALERT, SDA, and V+ terminals with open-drain I/O drivers and integrated Schmitt triggers for noise immunity.

It operates across 1.4 V to 3.6 V supply, achieves NIST-traceable calibration, and features ±0.5°C max error over –25°C to +85°C (V+ ≥ 1.5 V) and ±1.0°C over –40°C to +125°C - with long-term drift of ±0.125°C after 3000 hours at 125°C in DPW packaging.

Key Specifications

Pinout & Package

X2SON-5 package (0.8 mm × 0.8 mm × 0.4 mm) with wettable flank leads for automated optical inspection (AOI) and solder joint reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital temperature sensor applications.

Compared with TMP112D1IDPWR, TMP112D0IDPWR offers identical performance with a lower base I²C address (0x48h), simplifying initialization in multi-sensor designs; versus TMP112NIDPWR, it delivers tighter accuracy in the –25°C to +85°C zone critical for consumer device thermal management - at no penalty in power or size.

Availability

TMP112D0IDPWR is available at Aetrix Electronics and suitable for SSD thermal monitoring, industrial PC ambient sensing, and smart speaker thermal protection requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.

Supply support for TMP112D0IDPWR 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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision sensing and low-power design.

The TMP112 family was developed to replace NTC/PTC thermistors in high-accuracy, low-power thermal management applications - targeting communication infrastructure, enterprise computing, and consumer electronics where miniaturization and calibration-free operation are essential.

FAQ

What is the accuracy specification of the TMP112D0IDPWR over its full operating temperature range?

The TMP112D0IDPWR guarantees ±0.5°C maximum accuracy from –25°C to +85°C when supplied at ≥1.5 V, and ±1.0°C maximum from –40°C to +125°C. This dual-tier specification reflects optimized calibration for common consumer and industrial ambient ranges, with the tighter tolerance enabling precise thermal guardbanding in applications like SSDs and smart speakers where the TMP112D0IDPWR is deployed.

Does the TMP112D0IDPWR support I²C fast-mode-plus timing?

Yes, the TMP112D0IDPWR supports I²C fast-mode-plus operation up to 1 MHz, as confirmed in Section 6.6 of the SBOS473L datasheet. Its SCL timing parameters (t(LOW) min = 260 ns, t(HIGH) min = 60 ns) meet JEDEC JESD36 requirements for fast-mode-plus, allowing seamless integration with modern microcontrollers that require higher bus throughput without protocol translation - a key capability for the TMP112D0IDPWR in real-time thermal monitoring systems.

How does the ALERT pin function on the TMP112D0IDPWR, and what external components are required?

The ALERT pin on the TMP112D0IDPWR is an open-drain output that asserts low when measured temperature exceeds user-programmed high-limit or falls below low-limit thresholds. It requires an external pull-up resistor (typically 2.2–10 kΩ to V+) and may be tied directly to a GPIO interrupt pin on the host MCU. No additional logic or conditioning is needed - this autonomous alert capability reduces firmware polling overhead and is integral to the TMP112D0IDPWR's role in thermal protection circuits.

Can the TMP112D0IDPWR operate from a 1.4 V supply while maintaining full accuracy and functionality?

Yes, the TMP112D0IDPWR is fully specified from 1.4 V to 3.6 V per Section 6.3 of the datasheet. At 1.4 V, it maintains ±0.5°C accuracy over –25°C to +85°C, 12-bit resolution, and all interface functions including ALERT assertion and register reads - making it suitable for energy-harvesting or single-cell battery systems where the TMP112D0IDPWR delivers calibrated thermal data without voltage boosting.

What is the thermal resistance (RθJA) of the TMP112D0IDPWR in its X2SON-5 package?

The TMP112D0IDPWR in the X2SON-5 (DPW) package has a junction-to-ambient thermal resistance (RθJA) of 230°C/W, as listed in Table 6-4 of the SBOS473L datasheet. This value assumes standard JEDEC 2-layer test board conditions and informs thermal design margins - for example, at 7.5 µA active current and 3.3 V supply, self-heating is negligible (<0.003°C), preserving the stated ±0.5°C accuracy of the TMP112D0IDPWR in compact layouts.