TMP75B-Q1 Datasheet, PDF (1/31 Pages) Texas Instruments – TMP75B-Q1 1.8-V Digital Temperature Sensor with Two-Wire Interface and Alert

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TMP75B-Q1
SBOS721 – OCTOBER 2014
TMP75B-Q1 1.8-V Digital Temperature Sensor with Two-Wire Interface and Alert
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified with the Following Results:
– Temperature Grade 1: –40°C to 125°C
– HBM ESD Classification 2
– CDM ESD Classification C4B
• Digital Output with Two-Wire Serial Interface
• Up to 8 Pin-Programmable Bus Addresses
• Programmable Overtemperature ALERT
• Shutdown Mode for Power Saving
• One-Shot Conversion Mode
• Operating Temperature Range: –40°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 –40°C to 125°C
• Resolution: 12 Bits (0.0625°C)
• Packages: SOIC-8 and VSSOP-8
2 Applications
• Automotive Embedded Systems
• ECU Processor Temperature Monitoring
• TCM Processor Temperature Monitoring
• BCM Processor Temperature Monitoring
• LED Headlight Thermal Control
• Battery Thermal Protection
• Electrical Motor Driver Thermal Protection
3 Description
The TMP75B-Q1 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-
Q1 is capable of reading temperatures with a
resolution of 0.0625°C and is specified over a
temperature range of –40°C to 125°C.
The TMP75B-Q1 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-Q1
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-Q1 is ideal for thermal management
and protection of a variety of automotive applications,
and is a high-performance alternative to a PCB-
mounted NTC thermistor.
Device Information⁽¹⁾
DEVICE NAME
PACKAGE
BODY SIZE (NOM)
TMP75B-Q1
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
Two-Wire
Host Controller
TMP75B-Q1
1
SDA
8
VS
2
SCL
7
A0
3
ALERT
6
A1
4
GND
5
A2
0.01 2F
1
Temperature Accuracy (Error) vs Ambient
Temperature
3
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.