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TMP75C
SBOS707B –APRIL 2014–REVISED AUGUST 2014
TMP75C 1.8-V Digital Temperature Sensor with Two-Wire Interface and Alert
1 Features
3 Description
The TMP75C is an integrated digital temperature
sensor with a 12-bit analog-to-digital converter (ADC)
that can operate at a 1.8-V supply, and is pin and
register compatible with the NCT75 and ADT75. This
device is available in SOIC-8 and VSSOP-8
packages and requires no external components to
sense the temperature. The TMP75C is capable of
reading temperatures with a resolution of 0.0625°C
and is specified over a temperature range of –55°C to
+125°C.
1
•
Low-Voltage Alternative to NCT75 and ADT75
Digital Output with Two-Wire Serial Interface
Up to 8 Pin-Programmable Bus Addresses
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•
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Overtemperature ALERT Pin with Programmable
Trip Values
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Shutdown Mode for Battery Power Saving
One-Shot Conversion Mode
Operating Temperature Range: –55°C to +125°C
Operating Supply Range: 1.4 V to 3.6 V
Quiescent Current:
The TMP75C features SMBus and two-wire interface
compatibility, and allows up to eight devices on the
same bus with the SMBus overtemperature alert
function. The programmable temperature limits and
the ALERT pin allow the sensor to operate as a
stand-alone thermostat, or an overtemperature alarm
for power throttling or system shutdown.
–
–
15 μA Active (typ)
0.3 μA Shutdown (typ)
•
Accuracy:
–
–
–
±0.25°C (typ) from 0°C to +70°C
The factory-calibrated temperature accuracy and the
noise-immune digital interface make the TMP75C the
preferred solution for temperature compensation of
other sensors and electronic components, without the
need for additional system-level calibration or
elaborate board layout for distributed temperature
sensing.
±0.5°C (typ) from –20°C to +85°C
±1°C (typ) from –55°C to +125°C
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Resolution: 12 Bits (0.0625°C)
Packages: SOIC-8 and VSSOP-8
2 Applications
The TMP75C is ideal for thermal management and
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Server and Computer Thermal Management
Telecommunication Equipment
Office Machines
protection of
communication,
applications.
a
variety of consumer, computer,
industrial, and environmental
Video Game Consoles
Device Information(1)
Set-Top Boxes
DEVICE NAME
PACKAGE
SOIC (8)
VSSOP (8)
BODY SIZE (NOM)
4.90 mm × 3.90 mm
3.00 mm × 3.00 mm
Power Supply and Battery Thermal Protection
Thermostat Control
TMP75C
Environmental Monitoring and HVAC
Electrical Motor Driver Thermal Protection
(1) For all available packages, see the package option addendum
at the end of the datasheet.
Temperature Accuracy (Error) vs Ambient
Temperature
Simplified Schematic
1.4 V to 3.6 V
3
2
0.01 PF
1
TMP75C
1
2
3
4
8
7
6
5
SDA
VS
A0
A1
A2
0
SCL
Two-Wire
Host Controller
±1
ALERT
GND
Mean
±2
Mean - 61
Mean + 61
±3
±75 ±50 ±25
0
25
50
75
100 125 150
Temperature (C)
C005
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.