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NXP Semiconductors P3T1085UKZ
- Part No.:
- P3T1085UKZ
- Manufacturer:
- NXP Semiconductors
- Category:
- Analog and Digital Output
- Package:
- 6-XFBGA, WLCSP
- Datasheet:
-
P3T1085UKZ.pdf
- Description:
- I3C, I2C-BUS INTERFACE, 0.5 C A
- Quantity:
- Payment:
- Shipping:
Inventory:5,829
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Product details
Overview
P3T1085UKZ from NXP Semiconductors is a high-accuracy digital temperature sensor with I3C and I²C interfaces, ±0.5 °C max accuracy from −20 °C to +85 °C, 12-bit resolution (0.0625 °C), and −40 °C to +125 °C operating range - deployed in SSD thermal monitoring, server ambient sensing, and portable device thermal management.
For engineers reviewing the P3T1085UKZ datasheet, P3T1085UKZ pinout, P3T1085UKZ application, or P3T1085UKZ equivalent, key selection criteria include dual I3C/I²C support (up to 12.5 MHz / 3.4 MHz), programmable over/undertemperature alerts with hysteresis control, WLCSP6 package (1.18 mm × 0.84 mm), and low-quiescent-current operation (6 μA typical) for battery-sensitive systems.
Technical Context
The P3T1085UKZ integrates an on-chip bandgap temperature sensor and 12-bit ADC with two's complement output, storing readings in a dedicated read-only Temp register. It supports three conversion modes-continuous, one-shot, and shutdown-configured via M1/M0 bits in the 16-bit Conf register.
I3C operation includes In-Band Interrupt (IBI) capability without external pins, dynamic address assignment via SETDASA/ENTDAA CCCs, and full MIPI I3C SDR compliance (BCR=0x00, DCR=0x63). I²C mode supports four target addresses (via A0 pin), SMBus alert response, and timeout recovery (tTO = 45 ms max).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±0.5 °C max (−20 °C to +85 °C); ±1 °C max (−40 °C to +125 °C) - enables precise thermal throttling in compute and storage subsystems |
| Resolution | 12-bit two's complement (0.0625 °C step) - provides fine-grained temperature tracking for closed-loop thermal control |
| Supply Range | 1.4 V to 3.6 V - compatible with modern low-voltage SoC rails and battery-powered designs |
| Quiescent Current | 6 μA typical (shutdown mode); 15 μA typical (active conversion at +25 °C) - extends battery life in always-on thermal monitoring |
| Interface Speed | I3C up to 12.5 MHz (SDR); I²C up to 3.4 MHz (Fast-mode Plus) - supports high-throughput thermal telemetry in dense multi-sensor systems |
| Alert Function | Programmable THIGH/TLOW limits with 0 °C/1 °C/2 °C/4 °C hysteresis (HYS1/HYS0) - prevents chatter during thermal transitions in industrial controllers |
| ESD Rating | 2000 V HBM (JESD22-A114), 1000 V CDM (JESD22-C101) - ensures robustness in handling and board assembly environments |
Pinout & Package
Package: WLCSP6 (Wafer Level Chip-Scale Package), 1.18 mm × 0.84 mm × 0.48 mm (backside coating included), SOT1380-6 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA | Digital I/O (I3C/I²C bidirectional data) | Open-drain interface requiring external pull-up; supports both I3C SDR and I²C Fast-mode Plus protocols |
| SCL | Digital input (I3C/I²C clock) | Master-driven clock line; used for timing all bus transactions including CCC execution and register access |
| A0 | Address configuration input | Selects one of four static I²C target addresses (1001000–1001011) by tying to GND/VCC/SDA/SCL |
| GND | Ground reference | Primary return path for analog and digital circuitry; must be low-impedance for stable ADC performance |
| VCC | Power supply input | Supplies core logic, ADC, and interface circuits; POR threshold is 1.2 V (max), with 20 ms stabilization required |
| ALERT | Open-drain interrupt output (I²C only) | Asserts when temperature exceeds THIGH/TLOW; polarity configurable (POL bit); no I3C equivalent (IBI replaces it) |
Key Features
| Feature | Design Value |
|---|---|
| Dual-interface compatibility | Fully compliant I3C SDR target (12.5 MHz) and I²C Fast-mode Plus (3.4 MHz) - eliminates need for separate sensor families across legacy and next-gen platforms |
| In-Band Interrupt (IBI) | Eliminates dedicated interrupt pin by using SDA arbitration; controller detects priority-based address broadcast during idle bus periods |
| Configurable conversion rate | 0.25 Hz to 16 Hz (CR1/CR0 bits); 7.8 ms typical conversion time - balances responsiveness and power in thermal event detection |
| Programmable alert hysteresis | 0 °C / 1 °C / 2 °C / 4 °C (HYS1/HYS0) - prevents false triggers near trip thresholds in noisy thermal environments |
| Multi-address I²C support | Four selectable static addresses via A0 pin - enables up to four P3T1085UKZ sensors on a single I²C bus without address conflict |
Applications
| SSD Thermal Monitoring | Server Ambient Sensing |
|---|---|
|
Use Scenario: Real-time die temperature tracking in NVMe SSDs to prevent thermal throttling and extend NAND endurance. IC Role / Device Role / Timing Role: Primary temperature-to-digital converter interfacing directly with SSD controller via I3C for low-latency thermal telemetry. Use Value: 0.0625 °C resolution and ±0.5 °C accuracy enable precise thermal margining; 12.5 MHz I3C bandwidth supports burst reads during thermal stress events. |
Use Scenario: Ambient temperature measurement across server chassis zones (CPU, memory, PSU) for fan speed control and thermal mapping. IC Role / Device Role / Timing Role: Distributed thermal node connected to BMC via I²C bus, configured for continuous 1 Hz sampling and alert-driven interrupt reporting. Use Value: Four-device I²C address flexibility allows co-location of multiple P3T1085UKZ units; 6 μA shutdown current minimizes standby power impact. |
| Portable Device Thermal Management | Industrial Controller Monitoring |
|
Use Scenario: Battery and SoC junction temperature supervision in tablets and 2-in-1 laptops to enforce safe operating limits under varying workloads. IC Role / Device Role / Timing Role: Secondary thermal sensor on PMIC or application processor I²C bus, operating in one-shot mode triggered by OS thermal policy. Use Value: 1.4–3.6 V supply range matches battery voltage swing; 1 °C default hysteresis prevents oscillation during dynamic load changes. |
Use Scenario: Enclosure and power module temperature monitoring in PLCs and motor drives exposed to wide ambient swings (−40 °C to +125 °C). IC Role / Device Role / Timing Role: Ruggedized thermal endpoint communicating over isolated I²C to main controller, leveraging ±1 °C accuracy across full industrial range. Use Value: ESD rating (2000 V HBM) withstands factory handling; WLCSP6 package enables compact placement near heat sources without thermal mass penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTS22H | Single I²C interface (1 MHz max); 0.5 °C accuracy (−20 °C to +85 °C); 1.7–3.6 V supply; 2.5 μA quiescent current | Lacks I3C support and ALERT pin; uses push-pull output instead of open-drain | Choose STTS22H for cost-sensitive I²C-only designs where I3C migration is not planned and lower IQ is critical |
| MAX31875 | I²C interface only (3.4 MHz); ±0.25 °C accuracy (−25 °C to +100 °C); 1.7–3.6 V supply; 1.5 μA shutdown current | No I3C capability; narrower temperature range; higher accuracy but limited industrial coverage | Prefer MAX31875 when sub-0.5 °C accuracy is mandatory in consumer-grade thermal zones and I3C is unnecessary |
Compared with STTS22H and MAX31875, the P3T1085UKZ uniquely delivers I3C readiness alongside I²C interoperability, full −40 °C to +125 °C range validation, and integrated hysteresis programming - making it the only option supporting future-proof thermal architectures in servers, SSDs, and industrial edge controllers.
Availability
P3T1085UKZ is available at Aetrix Electronics and suitable for SSD thermal monitoring, server ambient sensing, and portable device thermal management requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for P3T1085UKZ 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 embedded interface IP.
The P3T1085UKZ belongs to NXP's precision analog sensor portfolio, designed specifically to address next-generation thermal management requirements in high-density computing, storage, and edge infrastructure where I3C adoption is accelerating.
FAQ
What is the maximum I3C communication speed supported by the P3T1085UKZ?
The P3T1085UKZ supports MIPI I3C SDR mode up to 12.5 MHz. This speed is validated per the official NXP datasheet Rev. 1.3 and enables high-throughput thermal telemetry in systems with multiple I3C sensors. The P3T1085UKZ does not support I3C HDR or DDR modes. Its I3C implementation is strictly SDR-compliant with full CCC support including SETDASA, GETPID, and IBI activation.
Does the P3T1085UKZ support both I2C and I3C simultaneously on the same bus lines?
Yes - the P3T1085UKZ shares SDA and SCL pins for both I²C and I3C operation. It auto-detects protocol based on bus conditions: I²C START/STOP sequences trigger I²C mode, while I3C-specific CCC commands (e.g., 7'h7E) initiate I3C mode. No hardware reconfiguration is needed. The P3T1085UKZ remains fully compliant with both specifications without conflict or arbitration issues.
How is the ALERT pin behavior different between I2C and I3C modes on the P3T1085UKZ?
The ALERT pin is I²C-only functionality. In I²C mode, it asserts as an open-drain SMBus alert signal when temperature breaches THIGH/TLOW limits. In I3C mode, ALERT is disabled and replaced by In-Band Interrupt (IBI), which uses the SDA line for interrupt notification without requiring a dedicated pin. The P3T1085UKZ datasheet explicitly states ALERT is "for I2C-bus interface only" and inactive during I3C operation.
What is the meaning of the 'Z' suffix in P3T1085UKZ, and how does it differ from P3T1085UK?
The 'Z' suffix in P3T1085UKZ denotes the reel packaging variant: 13-inch reel, Q1/T1 tape-and-reel, dry pack, minimum order quantity 15,000 units. In contrast, P3T1085UK (without Z) refers to the base part number, while P3T1085UKAZ is the 7-inch reel variant (MOQ 3,500). All three share identical electrical, thermal, and functional specifications - only packaging and ordering parameters differ. The P3T1085UKZ is the standard production version for high-volume manufacturing.
Can the P3T1085UKZ operate reliably at 1.4 V supply voltage across its full temperature range?
Yes - the P3T1085UKZ is fully specified for 1.4 V to 3.6 V operation across −40 °C to +125 °C. At 1.4 V, the device maintains ±1 °C accuracy over the full range and supports all I²C functions (including alert and address selection). I3C operation is guaranteed at ≥1.65 V per MIPI I3C v1.1.1 requirements, but the P3T1085UKZ's internal regulation ensures functional stability down to 1.4 V for I²C use cases.
P3T1085UKZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 6-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Digital
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- 2-Wire Serial, I2C, I3C
- Voltage - Supply:
- 1.4V ~ 3.6V
- Resolution:
- 12 b
- Features:
- Shutdown Mode
- Accuracy - Highest (Lowest):
- ±0.5°C (±1°C)
- Test Condition:
- -20°C ~ 85°C (-40°C ~ 125°C)
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 6-WLCSP (1.18x.84)
P3T1085UKZ FAQ
1.How can I place an order for P3T1085UKZ through Aetrix?
Please submit a Request for Quotation (RFQ) for P3T1085UKZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P3T1085UKZ reliable?
The price and inventory of P3T1085UKZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P3T1085UKZ is usually 5 days.
3.What payment methods are accepted for P3T1085UKZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P3T1085UKZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P3T1085UKZ?
P3T1085UKZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P3T1085UKZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P3T1085UKZ?
For technical support, including P3T1085UKZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P3T1085UKZ requirements.
6.How does Aetrix verify that P3T1085UKZ is sourced from the original manufacturer or authorized distributors?
All P3T1085UKZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P3T1085UKZ meets industry standards.
7.What is the process for return or replacement of P3T1085UKZ?
All P3T1085UKZ units undergo pre-shipment inspection (PSI). If there is an issue with P3T1085UKZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P3T1085UKZ part is unused and in its original packaging.
Return procedure for P3T1085UKZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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