NXP Semiconductors PCT2075GV/N005X

Overview

PCT2075GV/N005X from NXP Semiconductors is a 6-pin TSOP6 digital temperature sensor and thermal watchdog IC with ±1 °C accuracy from −25 °C to +100 °C, 0.125 °C resolution via 11-bit Sigma-Delta ADC, and programmable overtemperature shutdown at −5 °C (Tos) and hysteresis at −10 °C (Thyst). It operates on 2.7–5.5 V, supports I²C-bus Fast-mode Plus (1 MHz), and delivers <1.0 μA shutdown current - used in cooling system control where precise low-temperature trip points are required.

For engineers reviewing the PCT2075GV/N005X datasheet, PCT2075GV/N005X pinout, PCT2075GV/N005X application, or PCT2075GV/N005X equivalent, this page provides verified technical context, validated pin functions for TSOP6, confirmed register-level behavior of Tos/Thyst defaults, real-world thermal watchdog timing, and direct alternative options with documented functional differences.

Technical Context

The PCT2075GV/N005X implements an on-chip band gap temperature sensor interfaced with an 11-bit Sigma-Delta A-to-D converter, delivering 0.125 °C resolution and ±1 °C max error across −25 °C to +100 °C. Its OS output operates in comparator mode by default, activating at −5 °C and resetting at −10 °C, with fault queue programmable to 1–6 consecutive overtemp events.

Communication occurs via I²C-bus Fast-mode Plus (1 MHz, 30 mA SDA drive), with address set by single floating A0 pin (TSOP6 supports up to 3 devices per bus). The device powers up in normal mode with Tidle = 100 ms, conversion time ≈28 ms, and idle period ≈72 ms - enabling ultra-low average power consumption while maintaining responsive thermal monitoring.

Key Specifications

Pinout & Package

TSOP6 package (SOT1353-1), 6-pin plastic thin small outline, body dimensions 2.9 mm × 1.5 mm × 1.05 mm, lead pitch 0.95 mm, gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM75BIMM/NOPB and STLM20CB5F, the PCT2075GV/N005X uniquely delivers factory-configured low-temperature thresholds in a space-saving TSOP6 package with integrated open-drain OS output - eliminating both firmware configuration and external discrete components required by alternatives.

Availability

PCT2075GV/N005X is available at Aetrix Electronics and suitable for cooling system control, industrial thermal monitoring, server fan management, and medical diagnostic equipment requiring stable component supply with guaranteed long-term continuity.

Supply support for PCT2075GV/N005X 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 PCT2075GV/N005X belongs to NXP's precision analog sensor product line, designed specifically for embedded thermal management where factory-programmed trip points, ultra-low power, and I²C simplicity reduce system design effort.

FAQ

What is the default Tos and Thyst setting for PCT2075GV/N005X?

The PCT2075GV/N005X is a custom variant with factory-programmed Tos = −5 °C and Thyst = −10 °C, stored in the Tos and Thyst registers at power-up. These values are fixed and cannot be altered in-circuit - they define the exact thermal trip behavior without requiring register writes. This makes PCT2075GV/N005X ideal for drop-in thermostat applications where consistent low-temperature response is mandatory.

Does PCT2075GV/N005X require external pull-up resistors on SDA and SCL lines?

Yes, PCT2075GV/N005X requires external pull-up resistors on both SDA and SCL lines because it uses open-drain I²C signaling. NXP recommends ~1.5 kΩ resistors to VCC for reliable Fm+ operation at 1 MHz. The SDA and SCL inputs are overvoltage tolerant to 5.5 V, so pull-ups may be tied to a 5 V rail even when VCC is 3.3 V - simplifying mixed-voltage system design.

Can PCT2075GV/N005X operate in shutdown mode while retaining I²C accessibility?

Yes, PCT2075GV/N005X supports full I²C register read/write access in shutdown mode. While temperature conversion halts and the Temp register holds its last value, the I²C interface remains fully functional - allowing configuration changes, status reads, or wake-up sequence initiation without power cycle. This capability is essential for low-power systems that must retain thermal state visibility during sleep.

How does the OS output behave in comparator mode for PCT2075GV/N005X?

In comparator mode (default at power-up), the OS output of PCT2075GV/N005X asserts LOW when temperature reaches or exceeds −5 °C and remains asserted until temperature falls to −10 °C or below. Reading registers or entering shutdown mode does not reset OS - only crossing the hysteresis threshold does. This behavior enables direct connection to fan drivers or solid-state relays without additional logic.

What is the temperature sampling interval for PCT2075GV/N005X at power-up?

PCT2075GV/N005X powers up with Tidle = 00001 (binary), resulting in a default temperature sampling interval of 100 ms. Each conversion takes ≈28 ms, leaving ≈72 ms of idle time - minimizing average current draw while ensuring timely thermal response. The Tidle register (address 04h) can be reprogrammed to extend sampling up to 3.1 s for ultra-low-power applications.