NCT203 Datasheet, PDF (1/13 Pages) ON Semiconductor – Low Voltage, High Accuracy Temperature Monitor

NCT203
Low Voltage, High
Accuracy Temperature
Monitor with I²C Interface
The NCT203 is a digital thermometer and undertemperature/
overtemperature alarm, intended for use in thermal management
systems requiring low power and size. The NCT203 operates over a
supply range of 1.4 V to 2.75 V making it possible to use it in a wide
range of applications including low power devices.
The NCT203 can measure the ambient temperature accurate to
±1.75°C. The device operates over a wide temperature range of −40 to
+125°C.
The NCT203 has a configurable ALERT output and over−
temperature shutdown THERM pin.
Communication with the NCT203 is accomplished via the I²C
interface which is compatible with industry standard protocols.
Through this interface the NCT203s internal registers may be
accessed. These registers allow the user to read the current
temperature, change the configuration settings and adjust limits.
An ALERT output signals when the on−chip temperature is out of
range. The THERM output is a comparator output that can be used to
shut down the system if it exceeds the programmed limit. The ALERT
output can be reconfigured as a second THERM output, if required.
Features
• Small DFN Package
• On−Chip Temperature Sensor
• Low Voltage Operation: 1.4 V to 2.75 V
• Low Quiescent Current:
♦ 44 mA Normal Mode (max)
♦ 20 mA Shutdown (max)
• Power Saving Shutdown Mode
• Operating Temperature Range of −40°C to 125°C
• 2−wire I²C Serial Interface
• Programmable Over/Undertemperature Limits
• This is a Pb−Free Device
Applications
• Smart Phones, Tablet PCs, Satellite Navigation, Smart Batteries
http://onsemi.com
DFN8
MT SUFFIX
CASE 511BU
PIN ASSIGNMENTS
V_DD
NC
NC
THERM
1
8
2
7
3
6
4
5
DFN
(Top View)
SCL
SDA
ALERT/THERM2
GND
MARKING DIAGRAM
1
J2 MG
G
J2 = Specific Device Code
M = Date Code
G = Pb−Free Device
(*Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
1
June, 2013 − Rev. 2
Publication Order Number:
NCT203/D