Datasheet > NCT72_17

NCT72_17

更新时间： 2024-11-08 01:10:43

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
20页	255K
描述
Temperature Monitor with Series Resistance Cancellation

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NCT72_17 数据手册

NCT72

+15C Temperature Monitor

with Series Resistance

Cancellation

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

1.8 V without increasing the device Idd. A feature of the NCT72 is

series resistance cancellation, where up to 1.5 kW (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.

www.onsemi.com

WDFN8

DFN8

CASE 511AT

CASE 506BJ

PIN ASSIGNMENT

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.

SCLK

D+

D−

SDATA

ALERT/

THERM2

The NCT72 communicates over a 2-wire serial interface, compatible

THERM

GND

with system management bus (SMBus/I C) standards. The default

SMBus/I C address of the NCT72 is 0x4C. An NCT72D is available

(Top View)

with an SMBus/I C address of 0x4D. This is useful if more than one

NCT72 is used on the same SMBus/I C.

MARKING DIAGRAMS

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.

7xMG

Features

WDFN8

• On-chip and Remote Temperature Sensor

• 0.25°C Resolution/1°C Accuracy on Remote Channel

• 1°C Resolution/1°C Accuracy on Local Channel

• Series Resistance Cancellation Up to 1.5 kW

7x = Device Code (Where x = C or D)

= Date Code

= Pb-Free Package

(Note: Microdot may be in either location)

• Extended, Switchable Temperature Measurement Range

0°C to +127°C (Default) or –64°C to +191°C

• Pin and Register Compatible with NCT1008

• Remote THERM Limit of 108°C

NCT

72x

ALYWG

• 2-wire SMBus/I C Serial Interface with SMBus Alert Support

• Programmable Over/Undertemperature Limits

• Offset Registers for System Calibration

• Up to Two Overtemperature Fail-safe THERM Outputs

• Small 8-lead DFN

DFN8

= C or D

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb-Free Package

• 240 mA Operating Current, 5 mA Standby Current

• Compatible with 1.8 V Logic

• These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS

(Note: Microdot may be in either location)

Compliant

Applications

ORDERING INFORMATION

• Smart Phones

See detailed ordering and shipping information in the package

dimensions section on page 18 of this data sheet.

• Desktop and Notebook Computers

• Smart Batteries

Publication Order Number:

June, 2017 − Rev. 5

NCT72/D

12 3 4 5 6 7...20

中文翻译

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