Specification	NCT72DMNR2G

Accuracy - Highest (Lowest)	2.5 °C
Features	Standby Mode, Shutdown Mode, One-Shot, Programmable Limit, Output Switch
Mounting Type	Surface Mount
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Output Type	I2C/SMBus
Package / Case	8-VFDFN Exposed Pad
Resolution	8 b
Sensing Temperature - Local [Max]	125 °C
Sensing Temperature - Local [Min]	-40 °C
Sensing Temperature - Remote [Max]	191 °C
Sensing Temperature - Remote [Min]	-64 °C
Supplier Device Package	8-DFN (3x3)
Test Condition [Max]	230 °F
Test Condition [Min]	-20 °C
Voltage - Supply [Max]	3.6 V
Voltage - Supply [Min]	2.8 V

NCT72 Series

±1°C Temperature Monitor with Series Resistance Cancellation

Part	Mounting Type	Sensing Temperature - Remote [Max]	Sensing Temperature - Remote [Min]	Accuracy - Highest (Lowest)	Output Type	Sensing Temperature - Local [Max]	Sensing Temperature - Local [Min]	Voltage - Supply [Min]	Voltage - Supply [Max]	Resolution	Features	Supplier Device Package	Test Condition [Min]	Test Condition [Max]	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]
ON Semiconductor NCT72DMNR2G	Surface Mount	191 °C	-64 °C	2.5 °C	I2C/SMBus	125 °C	-40 °C	2.8 V	3.6 V	8 b	One-Shot Output Switch Programmable Limit Shutdown Mode Standby Mode	8-DFN (3x3)	-20 °C	230 °F	8-VFDFN Exposed Pad	125 °C	-40 °C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.44
		10	$ 1.29
		25	$ 1.22
		100	$ 0.94
		250	$ 0.83
		500	$ 0.79
		1000	$ 0.61
	Digi-Reel®	1	$ 1.44
		10	$ 1.29
		25	$ 1.22
		100	$ 0.94
		250	$ 0.83
		500	$ 0.79
		1000	$ 0.61
	Tape & Reel (TR)	3000	$ 0.58
		6000	$ 0.56
		15000	$ 0.54
Newark	Each (Supplied on Full Reel)	3000	$ 0.71
		6000	$ 0.65
		12000	$ 0.58
		18000	$ 0.56
		30000	$ 0.55
ON Semiconductor	N/A	1	$ 0.58

Description

General part information

NCT72 Series

The NCT72 is a dual-channel digital thermometer and undertemperature/overtemperature alarm, intended for use in PCs and thermal management systems. It is pin and register compatible with the NCT1008 but the NCT72 allows the user to pull the /ALERT pin to 1.8V without increasin the device Idd. A feature of the NCT72 is series resistance cancellation, where up to 1.5 kΩ (typical) of resistance in series with the temperature monitoring diode can be automatically cancelled from the temperature result, allowing noise filtering. The NCT72 has a configurable /ALERT output and an extended, switchable temperature measurement range. The NCT72 can measure the temperature of a remote thermal diode accurate to ±1°C and the ambient temperature accurate to ±3°C. The temperature measurement range defaults to 0°C to +127°C, compatible with the NCT1008, but it can be switched to a wider measurement range of -64°C to +191°C. The NCT72 communicates over a 2-wire serial interface, compatible with system management bus (SMBus/I2C) standards. The default SMBus/I2C address of the NCT72 is 0x4C. An NCT72D is available with an SMBus/I2C address of 0x4D. This is useful if more than one NCT72 is used on the same SMBus/I2C. An /ALERT output signals when the on-chip or remote temperature is out of range. The /THERM output is a comparator output that allows on/off control of a cooling fan. The /ALERT output can be reconfigured as a second /THERM output, if required.