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Home > Products > Sensors, Transducers > Temperature Sensors > Analog and Digital Output

NXP Semiconductors PCT2075GVJ

Name: PCT2075GVJ
Brand: NXP Semiconductors
SKU: PCT2075GVJ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PCT2075GVJ

Manufacturer:: NXP Semiconductors

Category:: Analog and Digital Output

Package:: SC-74, SOT-457

Datasheet:: PCT2075GVJ.pdf

Description:: SENSOR DIGITAL -55C-125C 6TSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PCT2075GVJ from NXP Semiconductors is a digital temperature sensor and thermal watchdog IC with ±1 °C accuracy over −25 °C to +100 °C, 11-bit Sigma-Delta ADC (0.125 °C resolution), I²C-bus Fast-mode Plus interface (1 MHz), and open-drain OS output for overtemperature shutdown. It operates in normal or shutdown mode and supports programmable Tos/Thyst set points-used in system thermal management, industrial controllers, and cooling systems.

For engineers reviewing the PCT2075GVJ datasheet, PCT2075GVJ pinout, PCT2075GVJ application, or PCT2075GVJ equivalent, key selection considerations include its TSOP6 package (6-pin), −55 °C to +125 °C operating range, 2.7–5.5 V supply, <1.0 μA shutdown current, and compatibility with LM75-series firmware and bus topology.

Technical Context

The PCT2075GVJ integrates an on-chip band gap temperature sensor with an 11-bit Sigma-Delta A-to-D converter, delivering 0.125 °C resolution and ±1 °C max error from −25 °C to +100 °C. Its OS output operates in comparator or interrupt mode, configurable via the Configuration register (bit B1), with programmable fault queue (1/2/4/6 faults) and polarity (HIGH/LOW active).

It uses a 2-wire I²C-bus Fast-mode Plus interface (up to 1 MHz, 30 mA SDA drive), supports SMBus time-out (25–35 ms), and features three address pins (A0 only, in TSOP6) enabling up to three devices per bus. The Temp register updates every 100 ms by default (Tidle-programmable), with conversion time ~28 ms and idle power optimization.

Key Specifications

Parameter	Value and Actual Design Meaning
Accuracy	±1 °C max from −25 °C to +100 °C; ±2 °C max from −55 °C to +125 °C - defines thermal monitoring precision in industrial ambient conditions.
Resolution	0.125 °C (11-bit two's complement) - enables detection of fine thermal drift in CPU/GPU thermal management.
Supply Voltage	2.7 V to 5.5 V - supports direct integration into 3.3 V and 5 V logic domains without level shifting.
I²C Interface	Fm+ (1 MHz), backward-compatible with Standard/Fast-mode - allows high-density bus loading with up to three TSOP6 devices.
Shutdown Current	<1.0 μA - enables ultra-low-power operation in battery-backed or energy-harvesting thermal monitors.
OS Output	Open-drain, programmable polarity and mode (comparator/interrupt) - directly drives MOSFET gates or microcontroller interrupts without external logic.
Operating Range	−55 °C to +125 °C - qualified for under-hood automotive, industrial PLC, and telecom equipment environments.

Pinout & Package

Package: TSOP6 (plastic thin small outline, 6 leads; SOT1353-1), 2.0 mm × 1.25 mm × 0.9 mm body, lead pitch 0.65 mm.

Pin/Terminal	Circuit Role	Design Meaning
A0	Address input	User-defined I²C slave address bit 0; sampled at power-up; float/0/1 selects one of three possible addresses on shared bus.
GND	Ground reference	System ground return path; must be connected for proper biasing and thermal performance.
VCC	Power supply	2.7–5.5 V analog/digital supply; powers internal band gap sensor, ADC, and I²C interface.
SCL	I²C clock input	Asynchronous serial clock; tolerant to 5.5 V regardless of VCC - simplifies mixed-voltage bus design.
OS	Overtemperature output	Open-drain thermal alert; active LOW/HIGH programmable; asserts when Temp > Tos and fault queue met.
SDA	I²C bidirectional data	Open-drain serial data line; 5.5 V overvoltage tolerant; supports Fm+ 30 mA drive for extended bus length.

Key Features

Feature	Design Value
LM75-series pin/software compatibility	Drop-in replacement for LM75 family with identical register map and command protocol - enables legacy firmware reuse without modification.
Programmable sampling interval	Tidle register sets conversion period from 100 ms to 3.1 s - balances measurement responsiveness against power consumption in embedded thermal monitors.
Configurable OS behavior	Comparator mode (thermostat-like hysteresis) or interrupt mode (latched alert until register read) - supports both autonomous fan control and host-interrupt-driven thermal throttling.
ESD & latch-up robustness	2000 V HBM / 1000 V CDM ESD rating; >100 mA latch-up immunity - ensures reliability in handling-sensitive industrial assembly and field-replaceable modules.
Bus fault recovery	25–35 ms SDA time-out reset - prevents bus lock-up during controller resets or communication errors in mission-critical systems.

Applications

Server CPU Thermal Monitoring	Industrial PLC Cabinet Cooling
Use Scenario: Real-time die temperature tracking of multi-core processors to trigger dynamic frequency scaling or emergency shutdown before thermal throttling occurs. IC Role / Device Role / Timing Role: Primary temperature sensor feeding thermal management firmware; OS output directly triggers hardware reset or PMIC throttle signal. Use Value: 0.125 °C resolution detects sub-degree thermal runaway; ±1 °C accuracy ensures safe margin below silicon thermal limits (e.g., 105 °C junction).	Use Scenario: Ambient temperature supervision inside sealed industrial control cabinets to activate forced-air cooling fans when enclosure exceeds safe operating threshold. IC Role / Device Role / Timing Role: Standalone thermostat using OS comparator mode; no host MCU required for basic on/off fan control. Use Value: Pre-configured Tos/Thyst (e.g., 65 °C/55 °C) enables immediate deployment; <1.0 μA shutdown current extends battery backup runtime during power loss.
Telecom Base Station Power Amplifier	Medical Diagnostic Equipment
Use Scenario: Monitoring GaN RF power amplifier substrate temperature to prevent derating or catastrophic failure during high-duty-cycle transmission bursts. IC Role / Device Role / Timing Role: High-speed thermal watchdog; OS interrupt mode alerts host processor upon first Tos breach, enabling adaptive bias adjustment. Use Value: 1 MHz I²C interface supports rapid polling; 28 ms conversion time ensures timely response to fast thermal transients (<100 ms rise time).	Use Scenario: Ensuring MRI or ultrasound imaging subsystems remain within FDA-specified thermal safety limits during continuous operation. IC Role / Device Role / Timing Role: Redundant temperature monitor interfaced to safety-critical microcontroller; dual-register read (Temp + Conf) validates integrity before thermal shutdown. Use Value: −55 °C to +125 °C range covers cold-start to full-load conditions; ESD robustness prevents false trips from EMI in high-field environments.

Server CPU Thermal Monitoring

Industrial PLC Cabinet Cooling

Use Scenario: Real-time die temperature tracking of multi-core processors to trigger dynamic frequency scaling or emergency shutdown before thermal throttling occurs.

IC Role / Device Role / Timing Role: Primary temperature sensor feeding thermal management firmware; OS output directly triggers hardware reset or PMIC throttle signal.

Use Value: 0.125 °C resolution detects sub-degree thermal runaway; ±1 °C accuracy ensures safe margin below silicon thermal limits (e.g., 105 °C junction).

Use Scenario: Ambient temperature supervision inside sealed industrial control cabinets to activate forced-air cooling fans when enclosure exceeds safe operating threshold.

IC Role / Device Role / Timing Role: Standalone thermostat using OS comparator mode; no host MCU required for basic on/off fan control.

Use Value: Pre-configured Tos/Thyst (e.g., 65 °C/55 °C) enables immediate deployment; <1.0 μA shutdown current extends battery backup runtime during power loss.

Telecom Base Station Power Amplifier

Medical Diagnostic Equipment

Use Scenario: Monitoring GaN RF power amplifier substrate temperature to prevent derating or catastrophic failure during high-duty-cycle transmission bursts.

IC Role / Device Role / Timing Role: High-speed thermal watchdog; OS interrupt mode alerts host processor upon first Tos breach, enabling adaptive bias adjustment.

Use Value: 1 MHz I²C interface supports rapid polling; 28 ms conversion time ensures timely response to fast thermal transients (<100 ms rise time).

Use Scenario: Ensuring MRI or ultrasound imaging subsystems remain within FDA-specified thermal safety limits during continuous operation.

IC Role / Device Role / Timing Role: Redundant temperature monitor interfaced to safety-critical microcontroller; dual-register read (Temp + Conf) validates integrity before thermal shutdown.

Use Value: −55 °C to +125 °C range covers cold-start to full-load conditions; ESD robustness prevents false trips from EMI in high-field environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTS751-DR	±0.5 °C accuracy (−25 °C to +100 °C); 12-bit resolution; 1.7–5.5 V supply; same TSOP6 package and I²C interface.	Higher accuracy suits medical-grade calibration; lacks OS interrupt mode and programmable fault queue.	Select STTS751-DR when absolute accuracy >0.5 °C is required and OS latching is not needed.
MAX31875RAA+	±1 °C accuracy; 16-bit resolution; 1.7–3.6 V supply; 6-pin WLP package; integrated 10-bit DAC for closed-loop thermal control.	Designed for closed-loop thermal regulation (e.g., TEC drivers); incompatible voltage range and no OS output.	Choose MAX31875RAA+ only for low-voltage, DAC-assisted thermal control-not as a drop-in PCT2075GVJ replacement.

Compared with STTS751-DR and MAX31875RAA+, the PCT2075GVJ uniquely combines LM75 firmware compatibility, programmable OS modes, and 2.7–5.5 V operation in TSOP6 - making it optimal for cost-sensitive industrial upgrades where bus topology and legacy code reuse are critical.

Availability

PCT2075GVJ is available at Aetrix Electronics and suitable for system thermal management, industrial controllers, and medical diagnostic equipment requiring stable component supply across long production lifecycles.

Supply support for PCT2075GVJ 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 applications.

The PCT2075GVJ belongs to NXP's precision analog sensor portfolio, designed specifically for reliable, low-power thermal monitoring in space-constrained embedded systems where interoperability with legacy LM75-based firmware is essential.

FAQ

What is the default power-up configuration of the PCT2075GVJ?

At power-up, the PCT2075GVJ initializes in normal operation mode with OS comparator mode enabled, Tos = 80 °C, Thyst = 75 °C, OS active LOW, and fault queue = 1. The Temp register reads 0 °C until the first 28 ms conversion completes. This allows the PCT2075GVJ to function immediately as a standalone thermostat without host initialization.

Does the PCT2075GVJ support multiple devices on the same I²C bus?

Yes - the PCT2075GVJ in TSOP6 package has one address pin (A0), supporting three unique I²C addresses (1001000, 1001001, 1001010). This allows up to three PCT2075GVJ units on a single bus without address conflict, unlike the 8-pin variants which support up to 27 devices via A0/A1/A2.

How does the PCT2075GVJ handle temperature conversion during I²C reads?

The PCT2075GVJ decouples the I²C interface from the Sigma-Delta converter: reading registers (including Temp) does not interrupt ongoing conversions. The Temp register updates automatically every 100 ms (or Tidle-programmed interval), and new results are available immediately after update - enabling continuous monitoring without timing constraints on host reads.

Can the PCT2075GVJ be used without a microcontroller?

Yes - the PCT2075GVJ supports stand-alone operation in OS comparator mode. With factory-default Tos = 80 °C and Thyst = 75 °C, it autonomously drives an external fan or relay via the OS output without host intervention, making it ideal for simple thermal cutoff circuits in power supplies or motor drives.

What is the significance of the 'GV' suffix in PCT2075GVJ?

The 'GV' in PCT2075GVJ denotes the TSOP6 package variant (SOT1353-1). The 'J' suffix indicates reel packaging (13-inch reel, 5000-piece minimum order quantity). This distinguishes it from SO8 (PCT2075D), TSSOP8 (PCT2075DP), and HWSON8 (PCT2075TP) variants - all sharing identical electrical functionality but differing in footprint and thermal performance.

PCT2075GVJ Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: SC-74, SOT-457

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Sensor Type:: Digital, Local

Sensing Temperature - Local:: -55°C ~ 125°C

Sensing Temperature - Remote:: -

Output Type:: I2C/SMBus

Voltage - Supply:: 2.7V ~ 5.5V

Resolution:: 11 b

Features:: Output Switch, Programmable Limit, Shutdown Mode

Accuracy - Highest (Lowest):: ±1°C (±2°C)

Test Condition:: -25°C ~ 100°C (-55°C ~ 125°C)

Operating Temperature:: -55°C ~ 125°C

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 6-TSOP

PCT2075GVJ FAQ

1.How can I place an order for PCT2075GVJ through Aetrix?

Please submit a Request for Quotation (RFQ) for PCT2075GVJ 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 PCT2075GVJ reliable?

The price and inventory of PCT2075GVJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCT2075GVJ is usually 5 days.

3.What payment methods are accepted for PCT2075GVJ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCT2075GVJ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PCT2075GVJ?

PCT2075GVJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PCT2075GVJ 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 PCT2075GVJ?

For technical support, including PCT2075GVJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCT2075GVJ requirements.

6.How does Aetrix verify that PCT2075GVJ is sourced from the original manufacturer or authorized distributors?

All PCT2075GVJ 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 PCT2075GVJ meets industry standards.

7.What is the process for return or replacement of PCT2075GVJ?

All PCT2075GVJ units undergo pre-shipment inspection (PSI). If there is an issue with PCT2075GVJ, 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 PCT2075GVJ part is unused and in its original packaging.

Return procedure for PCT2075GVJ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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