NXP Semiconductors P3T1084UKZ

Overview

P3T1084UK from NXP Semiconductors is a high-accuracy digital temperature sensor with I3C and I²C interfaces, ±0.4 °C max accuracy from –20 °C to +85 °C, 12-bit resolution (0.0625 °C), and WLCSP6 package. It performs temperature-to-digital conversion using an on-chip bandgap sensor and supports overtemperature/undertemperature alerting in portable, server, and SSD thermal management systems.

For engineers reviewing the P3T1084UK datasheet, P3T1084UK pinout, P3T1084UK application, or P3T1084UK equivalent, this page delivers verified interface timing (I3C up to 12.5 MHz, I²C up to 3.4 MHz), supply range (1.4–3.6 V), alert configuration logic, dynamic address assignment flow, and WLCSP6 bump mapping for layout and firmware integration.

Technical Context

The P3T1084UK integrates a bandgap-based analog temperature sensor with a 12-bit successive-approximation ADC, delivering two's complement output at 0.0625 °C resolution. Its dual-interface architecture supports I3C SDR target mode (with IBI, SETDASA, GETPID, and BCR/DCR compliance) and Fast-mode Plus I²C (3.4 MHz) with four selectable static addresses via A0 pin.

Operation modes-normal, one-shot, and shutdown-are controlled by M1/M0 bits in the Conf register; alert behavior (active-low open-drain) is configurable via POL and TM bits, with hysteresis (0–4 °C) set by HYS1/HYS0. Conversion rates (0.25–16 Hz) and quiescent current (6 μA in shutdown, 15 μA active typ.) are programmable.

Key Specifications

Pinout & Package

Package: WLCSP6 (1.18 mm × 0.84 mm × 0.48 mm, backside coating included), SOT1380-6.

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 P3T1084UK uniquely balances I3C scalability, ultra-low power (6 μA shutdown), and industry-standard ±0.4 °C accuracy - making it optimal for next-generation portable, SSD, and server platforms requiring future-proof bus architecture.

Availability

P3T1084UK is available at Aetrix Electronics and suitable for portable devices, SSD thermal management, and industrial controllers requiring stable component supply across long production lifecycles.

Supply support for P3T1084UK 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.

The P3T1084UK belongs to NXP's precision analog sensor portfolio, designed specifically to meet the thermal monitoring demands of high-density, low-power computing platforms adopting MIPI I3C standards.

FAQ

What communication interfaces does the P3T1084UK support?

The P3T1084UK supports both MIPI I3C (up to 12.5 MHz SDR) and I²C (up to 3.4 MHz Fast-mode Plus) interfaces. It implements full I3C target functionality including IBI, SETDASA, GETPID, and BCR/DCR registers, while maintaining full register-level compatibility with I²C read/write operations. The P3T1084UK uses the same Temp, Conf, TLOW, and THIGH registers across both interfaces.

How is the P3T1084UK's accuracy specified across temperature ranges?

The P3T1084UK achieves ±0.4 °C maximum accuracy from –20 °C to +85 °C and ±1 °C maximum from –40 °C to +125 °C, measured under 1.4–3.6 V supply conditions. This specification reflects total error including offset, gain, and linearity contributions from the on-chip bandgap sensor and 12-bit ADC. Accuracy is guaranteed without external calibration.

Does the P3T1084UK support interrupt functionality on both I3C and I2C interfaces?

The P3T1084UK supports interrupt notification on I²C via the open-drain ALERT pin (configurable active-high/low), but I3C interrupts are implemented exclusively through In-Band Interrupt (IBI) - eliminating the need for a dedicated interrupt pin. IBI operates by driving the device's dynamic address onto the SDA line during bus idle periods, and is not available on the I²C interface.

What is the role of the A0 pin on the P3T1084UK?

The A0 pin on the P3T1084UK selects one of four static I²C target addresses (1001000–1001011) by connecting it to GND, VCC, SDA, or SCL. This enables up to four P3T1084UK devices on a single I²C bus without address conflicts. During power-up, the A0 state is sampled on the first valid START condition and latched to minimize current draw from address detection circuitry.

Can the P3T1084UK operate in low-power modes, and how is power consumption minimized?

Yes, the P3T1084UK supports shutdown mode (6 μA typical), one-shot mode, and continuous conversion at programmable rates (0.25–16 Hz). Power is minimized by disabling the ADC and oscillator in shutdown, and by adjusting CR1/CR0 bits to reduce conversion frequency. Active quiescent current is 15 μA typical at +25 °C, with delay-mode current dropping to 1.95 μA between conversions.