NXP Semiconductors P3T1750DPZ

Overview

P3T1750DP from NXP Semiconductors is a digital temperature sensor with I3C and I2C-bus interfaces, ±1 °C accuracy over −40 °C to +125 °C, 12-bit resolution (0.0625 °C), and programmable overtemperature alert functionality. It operates from 1.4 V to 3.6 V and delivers 4.1 μA typical quiescent current, targeting thermal monitoring in space-constrained embedded systems such as SSDs and industrial controllers.

For engineers reviewing the P3T1750DP datasheet, P3T1750DP pinout, P3T1750DP application, or P3T1750DP equivalent, this device supports dual-interface communication (I3C up to 12.5 MHz / I2C up to 3.4 MHz), offers 32 configurable target addresses, implements IBI for interrupt notification without dedicated pins, and provides register-based configuration of THIGH/TLOW thresholds and alert modes.

Technical Context

The P3T1750DP integrates an on-chip bandgap temperature sensor with 12-bit ADC conversion, storing results in a read-only Temp register using two's complement format. Its operation supports one-shot, continuous, and shutdown modes via configuration bits OS, TM, and SD.

I3C interface compliance includes MIPI I3C SDR target mode with BCR/DCR registers identifying it as a temperature sensor (DCR = 0x63), supporting CCCs like SETDASA, GETPID, and ENEC/DISEC. I2C interface supports Fast-mode Plus (3.4 MHz), 32 target addresses via A0–A2 pins, and SMBus Alert protocol with address-based fault indication.

Key Specifications

Pinout & Package

Package: TSSOP8 (SOT505-1), plastic thin shrink small outline package, 8 leads, 3 mm body width.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTS22H and MAX31875, the P3T1750DP uniquely combines I3C SDR with I2C dual-interface operation, guaranteed ±1 °C accuracy across full voltage and temperature range, and hardware-supported IBI-making it optimal for next-generation sensor hubs requiring bus efficiency, automotive qualification, and multi-protocol interoperability.

Availability

P3T1750DP is available at Aetrix Electronics and suitable for SSD thermal management, industrial PLC monitoring, automotive cabin controllers, and IoT edge gateways requiring stable component supply and long-term production continuity.

Supply support for P3T1750DP 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The P3T1750DP belongs to NXP's precision analog sensor portfolio, designed specifically to enable high-accuracy, low-power thermal monitoring in I3C-enabled platforms and mixed-protocol embedded systems.

FAQ

What communication interfaces does the P3T1750DP support?

The P3T1750DP supports both I3C (up to 12.5 MHz) and I2C (up to 3.4 MHz) interfaces. It implements full MIPI I3C SDR target functionality-including dynamic address assignment via SETDASA, IBI for interrupt signaling, and standardized CCCs-and maintains backward compatibility with Fast-mode Plus I2C for seamless integration into existing designs. The P3T1750DP uses the same SDA/SCL pins for both protocols.

How accurate is the P3T1750DP across its operating temperature range?

The P3T1750DP guarantees ±1 °C maximum accuracy from −40 °C to +125 °C at supply voltages between 1.4 V and 3.6 V. This specification is validated across process, voltage, and temperature corners and applies to the entire operating range-not just room temperature-enabling reliable thermal safety decisions in automotive and industrial applications.

Does the P3T1750DP require an external interrupt pin for alert functionality?

No. The P3T1750DP eliminates the need for a dedicated interrupt pin through I3C In-Band Interrupt (IBI), where it asserts its dynamic address onto the I3C bus during arbitration to notify the controller of thermal events. Under I2C, the ALERT pin remains available as an open-drain output supporting SMBus Alert protocol with address-encoded fault status.

What is the resolution and data format of the temperature reading from the P3T1750DP?

The P3T1750DP provides 12-bit temperature data in two's complement format with 0.0625 °C resolution, stored in the read-only Temp register (pointer 00h). The value occupies the 12 most significant bits of two consecutive bytes (MSByte/LSByte); the four LSBs of the LSByte are zero and must be ignored. Conversion to °C uses direct multiplication by 0.0625 for positive values or two's complement inversion for negative values.

Can multiple P3T1750DP sensors share the same I2C or I3C bus?

Yes. The P3T1750DP supports up to 32 unique I2C target addresses via A0–A2 pin combinations and maps each to a distinct I3C Provisional-ID instance. On I3C buses, dynamic addressing via SETDASA/ENTDAA enables conflict-free operation of dozens of sensors on a single bus, while IBI ensures efficient event-driven communication without polling overhead.