NCT475 Datasheet, PDF (1/13 Pages) ON Semiconductor – Industry Standard Digital Temperature Sensor in CSP Package

NCT475
Industry Standard Digital
Temperature Sensor in CSP
Package with 2-wire
Interface
The NCT475 is a two−wire serially programmable temperature
sensor with an over−temperature/interrupt output pin to signal out of
limit conditions. This is an open−drain pin and can operate in either
comparator or interrupt mode. Temperature measurements are
converted into digital form using a high resolution (12 bit),
sigma−delta, analog−to−digital converter (ADC). The device operates
over the –55°C to +125°C temperature range.
Communication with the NCT475 is accomplished via the
SMBus/I²C interface which is compatible with industry standard
protocols. Through this interface the NCT475s internal registers may
be accessed. These registers allow the user to read the current
temperature, change the configuration settings and adjust the
temperature limits.
The NCT475 has a wide supply voltage range of 3.0 V to 5.5 V. The
average supply current is 575 mA at 3.3 V. It also offers a shutdown
mode to conserve power. The typical shutdown current is 3 mA.
The NCT475 is available in a space saving 6 ball CSP package as
NCT475A and NCT475B. NCT475B gives I²C address options of
0x48 and 0x4A while NCT475A gives address options of 0x49 and
0x4B. NCT475 is also fully register compatible with the NCT75,
LM75 and TMP75.
Features
• 12−bit Temperature−to−Digital Converter
• Input Voltage Range from 3.0 V to 5.5 V
• Temperature Range from −55°C to +125°C
• SMBus/I²C Interface
• Over Temperature Indicator
• Support for SMBus ALERT
• Shutdown Mode for Low Power Consumption
• One−Shot Mode
• Available in 6 Ball CSP Package with Multiple Address Options
• These are Pb−Free Devices
Typical Applications
• Computer Thermal Monitoring
• Thermal Protection
• Isolated Sensors
• Battery Management
• Office Electronics
• Electronic Test Equipment
• Thermostat Controls
• System Thermal Management
www.onsemi.com
MARKING
DIAGRAM
WLCSP6
CASE 567JR
XXX
AYW
G
XXX
A
Y
W
G
= 45A (NCT475A)
= 45B (NCT475B)
= Assembly Location
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
SDA
A2
A1
V_DD
SCL
B2
B1
A1
OS/ALERT
C2
C1
GND
(Bottom View)
V_DD
SDA
A1
NCT475
SCL
GND
OS/ALERT
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information ion page 12 of
this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
June, 2015 − Rev. 0
Publication Order Number:
NCT475/D