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NXP Semiconductors P3T1755DP/Q900Z
- Part No.:
- P3T1755DP/Q900Z
- Manufacturer:
- NXP Semiconductors
- Category:
- Specialized
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
P3T1755DP/Q900Z.pdf
- Description:
- I3C, I2C-BUS INTERFACE, 0.5 C A
- Quantity:
- Payment:
- Shipping:
Inventory:2,082
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Product details
Overview
P3T1755DP/Q900Z from NXP Semiconductors is an AEC-Q100 qualified digital temperature sensor with I3C and I2C interfaces, ±0.5 °C accuracy from −20 °C to +85 °C, 12-bit resolution (0.0625 °C), and overtemperature alert functionality - used for thermal monitoring in automotive ECUs, battery management systems, and ADAS domain controllers.
For engineers reviewing the P3T1755DP/Q900Z datasheet, P3T1755DP/Q900Z pinout, P3T1755DP/Q900Z application, or P3T1755DP/Q900Z equivalent, this page delivers verified technical context, validated pin functions, automotive-grade operating parameters, and confirmed alternative options for thermal sensing in safety-critical vehicle subsystems.
Technical Context
The P3T1755DP/Q900Z integrates an on-chip bandgap temperature sensor with 12-bit ADC conversion, storing results in a read-only Temp register updated at configurable intervals. It supports three operational modes - one-shot, continuous, and shutdown - controlled via OS, TM, and SD bits in the Configuration register.
I3C interface compliance includes SDR mode up to 12.5 MHz, dynamic address assignment via SETDASA/ENTDAA CCCs, and In-Band Interrupt (IBI) without dedicated interrupt pins. I2C interface supports Fast-mode Plus (3.4 MHz), 32 target addresses, SMBus alert protocol, and general call reset functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±0.5 °C max from −20 °C to +85 °C; ±1 °C max across full −40 °C to +125 °C range - enables precise thermal throttling in automotive powertrain modules. |
| Resolution | 12-bit two's complement (0.0625 °C step) - provides fine-grained temperature discrimination for fan speed control and battery cell balancing. |
| Supply Range | 1.4 V to 3.6 V - compatible with 1.8 V and 3.3 V automotive microcontroller I/O domains without level shifting. |
| Interface Speed | I3C up to 12.5 MHz; I2C up to 3.4 MHz - supports high-throughput thermal telemetry in multi-sensor clusters on modern vehicle buses. |
| Quiescent Current | 4.1 μA typical in shutdown mode - extends battery life in always-on vehicle subsystems such as telematics and remote keyless entry receivers. |
| ESD Protection | 2000 V HBM (JS-001-2017); 1000 V CDM (JS-002-2018) - meets automotive board-level robustness requirements for under-hood and cabin-mounted sensors. |
| Operating Range | −40 °C to +125 °C ambient - qualified for engine bay, transmission, and power electronics thermal monitoring per AEC-Q100 Grade 0. |
Pinout & Package
Package: TSSOP8 (SOT505-1), plastic thin shrink small outline package, 8 leads, 3 mm body width - surface-mount compatible with standard automotive PCB reflow profiles and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA | Digital I/O | I3C/I2C bidirectional data line; open-drain with internal pull-up capability; supports both protocols on shared bus lines. |
| SCL | Digital input | I3C/I2C serial clock input; accepts 12.5 MHz (I3C) or 3.4 MHz (I2C) clock rates; tolerant of bus arbitration timing. |
| ALERT | Open-drain output | Programmable alert signal for overtemperature events; operates in comparator or interrupt mode; active-HIGH/LOW selectable. |
| GND | Ground reference | Analog and digital ground common node; requires low-impedance connection to minimize measurement offset drift. |
| A2, A1, A0 | Digital inputs | User-configurable address bits enabling up to 32 unique I2C target addresses (1000000b–1011111b) and corresponding I3C Provisional-ID instances. |
| VCC | Power supply | Single-supply input (1.4–3.6 V); powers internal bandgap sensor, ADC, and interface logic; decoupling capacitor required per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for −40 °C to +125 °C operation with PPAP support - enables direct use in safety-critical automotive applications without additional qualification effort. |
| In-Band Interrupt (IBI) | Eliminates need for dedicated interrupt pin by using SDA line for priority-based alert signaling on I3C bus - reduces PCB routing complexity and connector pin count in multi-sensor modules. |
| Programmable fault queue | Configurable number of consecutive out-of-limit readings before ALERT assertion - prevents false triggers from transient thermal noise in electric motor drives and DC-DC converters. |
| Two independent temperature thresholds | TLOW and THIGH registers (default 75 °C / 80 °C) with hysteresis - supports dual-zone thermal management for battery pack cold/warm protection and processor thermal envelope enforcement. |
| Dynamic address assignment | Supports SETDASA and SETNEWDA CCCs - allows runtime reconfiguration of I3C device addressing in software-defined vehicle architectures with hot-pluggable sensor nodes. |
Applications
| Automotive Powertrain Control | ADAS Domain Controller Thermal Monitoring |
|---|---|
Use Scenario: Real-time temperature tracking of engine control unit (ECU) microcontrollers and gate drivers during cold-start and high-load conditions. IC Role / Device Role / Timing Role: Primary thermal sensor feeding closed-loop thermal management firmware; updates every 100 ms in continuous mode. Use Value: Enables adaptive derating of ignition timing and fuel injection based on silicon junction temperature, improving emissions compliance and component longevity. | Use Scenario: Monitoring SoC die temperature and power delivery ICs in centralized ADAS domain controllers handling camera, radar, and sensor fusion. IC Role / Device Role / Timing Role: High-accuracy remote sensor interfaced via I3C bus; alerts host processor via IBI when die temperature exceeds 105 °C. Use Value: Prevents thermal throttling-induced latency spikes in real-time perception pipelines, maintaining ISO 26262 ASIL-B functional safety integrity. |
| Electric Vehicle Battery Management System | Automotive Infotainment Processor Thermal Throttling |
Use Scenario: Cell-level temperature sampling across 12S battery modules in 400 V/800 V traction packs, with redundancy against single-point failure. IC Role / Device Role / Timing Role: Secondary thermal monitor co-located with primary analog front-end; communicates over I2C with isolated MCU via optocoupled bus. Use Value: Provides independent validation of cell temperature gradients exceeding 5 °C, triggering cell balancing or contactor disconnect per UNECE R100 requirements. | Use Scenario: Dynamic thermal headroom estimation for quad-core application processors in head-unit infotainment systems with GPU-accelerated UI rendering. IC Role / Device Role / Timing Role: Local sensor mounted adjacent to processor package; reads temperature every 250 ms and reports via I3C to system controller. Use Value: Allows predictive DVFS scaling before thermal trip, avoiding abrupt UI freezes and preserving user experience during extended navigation sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTS22HTR | ±0.5 °C accuracy only from 0 °C to 65 °C; I2C-only interface; no I3C or IBI support; 1.71–3.6 V supply. | Targeted at consumer portable devices; lacks AEC-Q100 qualification and automotive temperature range coverage. | Select when cost-sensitive non-automotive designs require basic thermal monitoring without I3C or extended range. |
| MAX31875R2+ | ±1.0 °C accuracy across −40 °C to +125 °C; I2C interface only; 16-bit resolution; 2.7–5.5 V supply; no programmable fault queue. | Designed for industrial process control; higher voltage requirement limits compatibility with 1.8 V automotive MCUs. | Choose for legacy I2C-only systems requiring higher resolution but accepting wider accuracy tolerance and no automotive qualification. |
Compared with STTS22HTR and MAX31875R2+, the P3T1755DP/Q900Z uniquely combines AEC-Q100 Grade 0 qualification, dual I3C/I2C support with IBI, and guaranteed ±0.5 °C accuracy across the critical −20 °C to +85 °C automotive cabin and powertrain zone - making it the only option suitable for ASIL-B thermal supervision in next-generation vehicle architectures.
Availability
P3T1755DP/Q900Z is available at Aetrix Electronics and suitable for automotive powertrain control, ADAS domain controllers, EV battery management systems, and infotainment thermal management requiring stable component supply across long production lifecycles.
Supply support for P3T1755DP/Q900Z 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with leadership in automotive microcontrollers and sensor interfaces.
The P3T1755DP/Q900Z belongs to NXP's automotive-grade digital temperature sensor family, designed specifically to meet AEC-Q100 requirements and enable high-integrity thermal monitoring in safety-critical vehicle subsystems.
FAQ
What is the AEC-Q100 qualification status of P3T1755DP/Q900Z?
P3T1755DP/Q900Z is fully AEC-Q100 qualified per Grade 0 (−40 °C to +125 °C), with PPAP documentation available through NXP sales. This qualification covers HTOL, TC, ESD, and other stress tests required for automotive powertrain and ADAS applications - confirming that P3T1755DP/Q900Z meets reliability standards for under-hood and safety-critical use cases where thermal sensing integrity is mandatory.
Does P3T1755DP/Q900Z support both I2C and I3C interfaces simultaneously?
Yes, P3T1755DP/Q900Z supports concurrent I2C and I3C operation on the same SDA/SCL pins. The interface mode is auto-detected: I2C communication begins upon reception of a valid I2C START condition, while I3C commands (e.g., CCCs like SETDASA or GETPID) are recognized after I3C-specific bus conditions. No hardware configuration or mode pin is required - the device dynamically adapts to the protocol used by the controller.
How does the ALERT pin function differ between I2C and I3C modes on P3T1755DP/Q900Z?
In I2C mode, the ALERT pin operates as an SMBus-compatible open-drain alert signal, responding to the SMBus alert command (00011001) and returning its target address with LSB indicating THIGH/TLOW violation. In I3C mode, ALERT is disabled - interrupt notification occurs exclusively via In-Band Interrupt (IBI) on the SDA line, eliminating the need for a dedicated interrupt pin and simplifying multi-sensor bus topology.
What is the default temperature threshold configuration for P3T1755DP/Q900Z at power-up?
At power-up, P3T1755DP/Q900Z initializes THIGH to 80 °C (0x5000) and TLOW to 75 °C (0x4B00) in two's complement format. These values are stored in the THIGH and TLOW registers and define the overtemperature and hysteresis limits for ALERT activation. The configuration register defaults to 0x28, enabling continuous conversion mode with IBI enabled and alert comparator mode active.
Can P3T1755DP/Q900Z be used in systems requiring ISO 26262 functional safety compliance?
P3T1755DP/Q900Z itself is not ASIL-certified, but it is AEC-Q100 Grade 0 qualified and designed for use in ASIL-B and ASIL-C thermal supervision chains. Its diagnostic capabilities - including programmable fault queue, dual independent thresholds, and IBI-based alert confirmation - support systematic fault detection when integrated with appropriate safety mechanisms in the host controller, enabling compliance with ISO 26262 requirements for thermal monitoring subsystems.
P3T1755DP/Q900Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controllers, Notebook PC
- Interface:
- I2C, 2-Wire Serial
- Voltage - Supply:
- 1.4V ~ 3.6V
- Supplier Device Package:
- 8-TSSOP
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
P3T1755DP/Q900Z FAQ
1.How can I place an order for P3T1755DP/Q900Z through Aetrix?
Please submit a Request for Quotation (RFQ) for P3T1755DP/Q900Z 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 P3T1755DP/Q900Z reliable?
The price and inventory of P3T1755DP/Q900Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P3T1755DP/Q900Z is usually 5 days.
3.What payment methods are accepted for P3T1755DP/Q900Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P3T1755DP/Q900Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P3T1755DP/Q900Z?
P3T1755DP/Q900Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P3T1755DP/Q900Z 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 P3T1755DP/Q900Z?
For technical support, including P3T1755DP/Q900Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P3T1755DP/Q900Z requirements.
6.How does Aetrix verify that P3T1755DP/Q900Z is sourced from the original manufacturer or authorized distributors?
All P3T1755DP/Q900Z 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 P3T1755DP/Q900Z meets industry standards.
7.What is the process for return or replacement of P3T1755DP/Q900Z?
All P3T1755DP/Q900Z units undergo pre-shipment inspection (PSI). If there is an issue with P3T1755DP/Q900Z, 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 P3T1755DP/Q900Z part is unused and in its original packaging.
Return procedure for P3T1755DP/Q900Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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