NXP Semiconductors P3T1035BUKAZ

Overview

P3T1035BUKAZ from NXP Semiconductors is a high-accuracy digital temperature sensor with I3C and I²C interfaces, operating from −40 °C to +125 °C, delivering ±0.5 °C accuracy (0 °C to +70 °C at V_CC ≥ 1.62 V), 12-bit resolution (0.0625 °C), and ultra-low 6 μA typical supply current - deployed in thermal monitoring for SSDs, portable devices, and industrial controllers.

For engineers reviewing the P3T1035BUKAZ datasheet, P3T1035BUKAZ pinout, P3T1035BUKAZ application, or P3T1035BUKAZ equivalent, key selection considerations include its WLCSP4 package (0.91 mm × 0.855 mm), factory-programmed I²C address 1110001 (0xE1), dual-bus protocol support (I3C SDR + Fast-mode Plus I²C), overtemperature detection via tHIGH/tLOW registers, and MDA (Multiple Device Access) capability for efficient multi-sensor bus management.

Technical Context

The P3T1035BUKAZ integrates an on-chip bandgap temperature sensor with 12-bit ADC conversion, storing readings in a two's complement Temp register accessible via I3C/I²C. It supports three functional modes - one-shot, continuous conversion, and shutdown - controlled by M1/M0 bits in the Configuration register.

Its I3C interface implements MIPI I3C SDR target functionality with dynamic address assignment (SETDASA), BCR/DCR registers identifying it as a temperature sensor (DCR = 0x63), and IBI-capable event-driven interrupt signaling. In I²C mode, it enables global read/write operations and Multiple Device Access using dedicated MDA addresses (0x00 write / 0x01 read), limited to MSByte access for Temp/tHIGH/tLOW registers.

Key Specifications

Pinout & Package

Package: WLCSP4 - Wafer Level Chip Scale Package, 4-terminal, 0.4 mm pitch, 0.91 mm × 0.855 mm × 0.455 mm body (SOT1375-6).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTS22HTR and MAX31875RTA+, the P3T1035BUKAZ uniquely combines I3C readiness, MDA-enabled multi-sensor efficiency, and guaranteed ±0.5 °C accuracy across the full 0 °C to +70 °C commercial range - making it optimal for next-generation compute platforms requiring scalable, low-overhead thermal visibility.

Availability

P3T1035BUKAZ is available at Aetrix Electronics and suitable for SSD thermal management, portable device battery monitoring, and industrial PLC cabinet monitoring requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for P3T1035BUKAZ 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 leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in sensor signal conditioning and low-power mixed-signal design.

The P3T1035BUKAZ belongs to NXP's P3T family of intelligent temperature sensors designed specifically for high-density, low-voltage embedded systems demanding accurate, protocol-flexible thermal awareness without compromising power or space.

FAQ

What is the factory-programmed I²C address of the P3T1035BUKAZ?

The P3T1035BUKAZ has a fixed I²C 7-bit target address of 1110001 (0xE1), corresponding to topside mark "B" per Table 2 of the datasheet. This address is factory-laser-trimmed and cannot be modified in-system. The P3T1035BUKAZ uses this address for standard I²C communication and MDA transactions, and it maps to I3C provisional-ID bits [11:0] = 000011100010.

Does the P3T1035BUKAZ support true I3C dynamic address assignment?

Yes, the P3T1035BUKAZ supports I3C dynamic address assignment via the SETDASA Common Command Code (CCC), provided its static I²C address is not 1110110 (excluded per Table 7 footnote). It responds to ENTDAA broadcast CCCs and reports DCR = 0x63 (temperature sensor) and BCR indicating I3C target role and IBI capability - enabling full MIPI I3C SDR compliance in host-managed systems.

How does the Multiple Device Access (MDA) feature work on the P3T1035BUKAZ?

The P3T1035BUKAZ implements MDA exclusively in I²C mode using reserved addresses 0x00 (MDA write) and 0x01 (MDA read). When an MDA write occurs, all P3T1035BUKAZ devices on the bus accept the same byte into their selected register (e.g., tHIGH). During MDA read, each device sequentially outputs its MSByte - enabling single-transaction reads from up to eight sensors without individual addressing overhead.

What is the temperature resolution and data format of the P3T1035BUKAZ Temp register?

The P3T1035BUKAZ stores temperature in a 12-bit two's complement format across two bytes (MSB/LSB) in the Temp register (pointer 0x00). Full-resolution reading yields 0.0625 °C steps (e.g., 0x0100 = +16.0 °C). An 8-bit read accesses only the MSByte, giving 1 °C resolution - useful for rapid polling where precision is secondary to speed or bandwidth.

Can the P3T1035BUKAZ operate reliably below 1.62 V supply voltage?

Yes, the P3T1035BUKAZ operates from 1.4 V to 1.98 V, but accuracy degrades below 1.62 V: ±2 °C (−20 °C to +100 °C) and ±3 °C (−40 °C to +125 °C) per Section 2. Designers must validate thermal control margins under low-V_CC conditions, especially in battery-fall scenarios. The 6 μA quiescent current remains stable across the full supply range.