PCT2075DP - NXP

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

PCT2075DP
Manufacturer

NXP
ChipWorker Part#

CW481825482
Package

TSSOP-8
Description

IC-bus Fm+, 1 degree C accuracy, digital temperature sensor and thermal watchdog
Documentation

Datasheet

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PCT2075DP Specifications

Attribute	Attribute Value

Part Number	PCT2075DP
Manufacturer	NXP
ChipWorker Part#	CW481825482
Documentation	Datasheet
Mounting Style	Surface Mount
Case/Package	TSSOP-8
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-55 ℃
	expand all
Product Lifecycle Status	Unknown
RoHS	RoHS Compliant
Lead-Free Status	Lead Free

Product Description

Overview
The PCT2075 is a temperature-to-digital converter featuring ±1 °C accuracy over ‑25 °C to +100 °C range. It uses an on-chip band gap temperature sensor and Sigma-Delta A‑to‑D conversion technique with an overtemperature detection output that is a drop-in replacement for other LM75 series thermal sensors. The device contains a number of data registers: Configuration register (Conf) to store the device settings such as device operation mode, OS operation mode, OS polarity and OS fault queue; temperature register (Temp) to store the digital temp reading, set-point registers (Tos and Thyst) to store programmable overtemperature shutdown and hysteresis limits, and programmable temperature sensor sampling time Tidle, that can be communicated by a controller via the 2-wire serial I²C-bus Fast-mode Plus interface.
The PCT2075 also includes an open-drain output (OS) which becomes active when the temperature exceeds the programmed limits. The OS output operates in either of two selectable modes: OS comparator mode or OS interrupt mode. Its active state can be selected as either HIGH or LOW. The fault queue that defines the number of consecutive faults in order to activate the OS output is programmable as well as the set-point limits.
The PCT2075 can be configured for different operation conditions. It can be set in normal mode to periodically monitor the ambient temperature, or in shut-down mode to minimize power consumption.
The temperature register always stores an 11-bit two’s complement data, giving a temperature resolution of 0.125 °C. This high temperature resolution is particularly useful in applications of measuring precisely the thermal drift or runaway. When the device is accessed the conversion in process is not interrupted (that is, the I²C-bus section is totally independent of the Sigma-Delta converter section) and accessing the device continuously without waiting at least one conversion time between communications will not prevent the device from updating the Temp register with a new conversion result. The new conversion result will be available immediately after the Temp register is updated. It is also possible to read just one of the temperature register bytes without lock-up.
The PCT2075 powers up in the normal operation mode with the OS in comparator mode, temperature threshold of 80 °C and hysteresis of 75 °C, so that it can be used as a stand-alone thermostat with those pre-defined temperature set points. The default set points can be modified during manufacture and ordered under custom part number.
There are three selectable logic address pins with three logic states so that 27 8-pin devices or three 6-pin devices can be connected on the same bus without address conflict.
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## Features
* Pin-for-pin replacement for LM75 series but allows up to 27 devices on the bus
* Power supply range from 2.7 V to 5.5 V
* Temperatures range from -55 °C to +125 °C
* Frequency range 20 kHz to 1 MHz with SMBus time-out to prevent hanging up the bus
* 1 MHz Fast-mode Plus 30 mA SDA drive allows more devices on the same bus but is backward compatible to Fast-mode and Standard-mode
* 11-bit ADC that offers a temperature resolution of 0.125 °C
* Temperature accuracy of:
* ±1 °C (max.) from -25 °C to +100 °C
* ±2 °C (max.) from -55 °C to +125 °C
* Programmable temperature threshold and hysteresis set points during operation
* Supply current of <1.0 μA in shut-down mode for power conservation
* Stand-alone operation as thermostat at power-up
* ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
* Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
* Small 8-pin package types: SO8, TSSOP8 and 2 mm x 3 mm HWSON8
* Small 6-pin package type: TSOP6
## Features

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