TMP75B Datasheet, PDF (1/31 Pages) Texas Instruments – TMP75B 1.8-V Digital Temperature Sensor with Two-Wire Interface and Alert

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TMP75B
SBOS706B – APRIL 2014 – REVISED AUGUST 2014
TMP75B 1.8-V Digital Temperature Sensor with Two-Wire Interface and Alert
1 Features
•1 Low-Voltage Alternative to LM75 and TMP75
• Digital Output with Standard Two-Wire Serial
Interface
• Up to 8 Pin-Programmable Bus Addresses
• Overtemperature ALERT Pin with Programmable
Trip Values
• Shutdown Mode for Battery Power Saving
• One-Shot Conversion Mode for Custom Update
Rates
• Operating Temperature Range: –55°C to +125°C
• Operating Supply Range: 1.4 V to 3.6 V
• Quiescent Current:
– 45 μA Active (typ)
– 0.3 μA Shutdown (typ)
• Accuracy:
– ±0.5°C (typ) from –20°C to +85°C
– ±1°C (typ) from –55°C to +125°C
• Resolution: 12 Bits (0.0625°C)
• Packages: SOIC-8 and VSSOP-8
2 Applications
• Server and Computer Thermal Management
• Telecommunication Equipment
• Office Machines
• Video Game Consoles
• Set-Top Boxes
• Power Supply and Battery Thermal Protection
• Thermostat Control
• Environmental Monitoring and HVAC
• Electrical Motor Driver Thermal Protection
3 Description
The TMP75B 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 industry-standard LM75
and TMP75. This device is available in SOIC-8 and
VSSOP-8 packages, and requires no external
components to sense the temperature. The TMP75B
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.
The TMP75B 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.
The factory-calibrated temperature accuracy and the
noise-immune digital interface make the TMP75B 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.
The TMP75B is ideal for thermal management and
protection of a variety of consumer, computer,
communication, industrial, and environmental
applications.
Device Information⁽¹⁾
DEVICE NAME
PACKAGE
BODY SIZE (NOM)
TMP75B
SOIC (8)
VSSOP (8)
4.90 mm × 3.90 mm
3.00 mm × 3.00 mm
(1) For all available packages, see the package option addendum
at the end of the datasheet.
Simplified Schematic
1.4 V to 3.6 V
Temperature Accuracy (Error) vs Ambient
Temperature
3
Two-Wire
Host Controller
1
1
SDA
TMP75B
2
SCL
3
ALERT
4
GND
8
VS
7
A0
6
A1
5
A2
0.01 2F
2
1
0
±1
±2
±3
±75 ±50 ±25
0 25 50 75
Temperature (ƒC)
Mean
Mean - 6
Mean + 6
100 125 150
C005
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.