Temperature Sensors. LMT84-Q1 Datasheet

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LMT84-Q1 Datasheet
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Part LMT84-Q1
Description Analog Temperature Sensors
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LMT84-Q1 1.5-V, SC70,
Analog Temperature Sensors
LMT84-Q1
SNIS178 – OCTOBER 2017
1 Features
1 LMT84-Q1 is AEC-Q100 Qualified for Automotive
Applications:
– Device Temperature Grade 0: –40°C to
+150°C
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C6
• Very Accurate: ±0.4°C Typical
• Low 1.5-V Operation
• Average Sensor Gain of -5.5 mV/°C
• Low 5.4-µA Quiescent Current
• Wide Temperature Range: –50°C to 150°C
• Output is Short-Circuit Protected
• Push-Pull Output With ±50-µA Drive Capability
• Footprint Compatible With the Industry-Standard
LM20/19 and LM35 Temperature Sensors
• Cost-Effective Alternative to Thermistors
2 Applications
• Automotive
• Infotainment and Cluster
• Powertrain Systems
• Smoke and Heat Detectors
• Drones
• Appliances
3 Description
The LMT84-Q1 is a precision CMOS temperature
sensor with ±0.4°C typical accuracy (±2.7°C
maximum) and a linear analog output voltage that is
inversely proportional to temperature. The 1.5-V
supply voltage operation, 5.4-μA quiescent current,
and 0.7-ms power-on time enable effective power-
cycling architectures to minimize power consumption
for battery-powered applications such as drones and
sensor nodes.The LMT84-Q1 device is AEC-Q100
Grade 0 qualified and maintains ±2.7°C maximum
accuracy over the full operating temperature range
without calibration; this makes the LMT84-Q1 suitable
for automotive applications such as infotainment,
cluster, and powertrain systems. The accuracy over
the wide operating range and other features make the
LMT84-Q1 an excellent alternative to thermistors.
For devices with different average sensor gains and
comparable accuracy, refer to Comparable
Alternative Devices for alternative devices in the
LMT8x family.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LMT84-Q1
SOT (5)
2.00 mm x 1.25 mm
(1) For all available packages, see the orderable addendum
addendum at the end of the data sheet.
Thermal Time Constant
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0
0
20 40 60
TIME (s)
* Fast thermal response NTC
LMT8xLPG
Thermistor
80 100
D003
Output Voltage vs Temperature
VDD (+1.5V to +5.5V)
VDD
LMT84
CBP OUT
GND
Copyright © 2016, Texas Instruments Incorporated
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.



Texas Instruments LMT84-Q1
LMT84-Q1
SNIS178 – OCTOBER 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Tables................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Accuracy Characteristics........................................... 5
7.6 Electrical Characteristics........................................... 5
7.7 Typical Characteristics .............................................. 6
8 Detailed Description .............................................. 8
8.1 Overview ................................................................... 8
8.2 Functional Block Diagram ......................................... 8
8.3 Feature Description................................................... 8
8.4 Device Functional Modes........................................ 10
9 Application and Implementation ........................ 12
9.1 Applications Information.......................................... 12
9.2 Typical Applications ................................................ 12
10 Power Supply Recommendations ..................... 13
11 Layout................................................................... 14
11.1 Layout Guidelines ................................................. 14
11.2 Layout Examples................................................... 14
12 Device and Documentation Support ................. 15
12.1 Receiving Notification of Documentation Updates 15
12.2 Community Resources.......................................... 15
12.3 Trademarks ........................................................... 15
12.4 Electrostatic Discharge Caution ............................ 15
12.5 Glossary ................................................................ 15
13 Mechanical, Packaging, and Orderable
Information ........................................................... 15
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
DATE
October 2017
REVISION
*
NOTES
Initial release. Moved the automotive device
from the SNIS167 to a standalone data
sheet.
2 Submit Documentation Feedback
Product Folder Links: LMT84-Q1
Copyright © 2017, Texas Instruments Incorporated



Texas Instruments LMT84-Q1
www.ti.com
5 Device Comparison Tables
LMT84-Q1
SNIS178 – OCTOBER 2017
ORDER NUMBER(1)
LMT84DCK
LMT84LP
LMT84LPG
LMT84LPM
LMT84DCK-Q1
Table 1. Available Device Packages
PACKAGE
SOT (AKA(2): SC70, DCK)
TO-92 (AKA(2): LP)
TO-92S (AKA(2): LPG)
TO-92 (AKA(2): LPM)
SOT (AKA(2): SC70, DCK)
PIN BODY SIZE (NOM)
5 2.00 mm × 1.25 mm
3 4.30 mm × 3.50 mm
3 4.00 mm × 3.15 mm
3 4.30 mm × 3.50 mm
5 2.00 mm × 1.25 mm
MOUNTING TYPE
Surface Mount
Through-hole; straight leads
Through-hole; straight leads
Through-hole; formed leads
Surface Mount
(1) For all available packages and complete order numbers, see the Package Option addendum at the end of the data sheet.
(2) AKA = Also Known As
DEVICE NAME
LMT84-Q1
LMT85-Q1
LMT86-Q1
LMT87-Q1
Table 2. Comparable Alternative Devices
AVERAGE OUTPUT SENSOR GAIN
–5.5 mV/°C
–8.2 mV/°C
–10.9 mV/°C
–13.6 mV/°C
POWER SUPPLY RANGE
1.5 V to 5.5 V
1.8 V to 5.5 V
2.2 V to 5.5 V
2.7 V to 5.5 V
6 Pin Configuration and Functions
DCK Package
5-Pin SOT (SC70)
(Top View)
1
GND
5
GND
2
GND LMT84
3
OUT
4
VDD
NAME
GND
PIN
SOT (SC70)
1, 2(1) , 5
TYPE
Ground
Pin Functions
EQUIVALENT CIRCUIT
N/A
VDD
DESCRIPTION
FUNCTION
Power Supply Ground
OUT
3
Analog
Output
Outputs a voltage that is inversely
proportional to temperature
VDD 4 Power
(1) Direct connection to the back side of the die
GND
N/A
Positive Supply Voltage
Copyright © 2017, Texas Instruments Incorporated
Product Folder Links: LMT84-Q1
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