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Texas Instruments LMT86QDCKTQ1
- Part No.:
- LMT86QDCKTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LMT86QDCKTQ1.pdf
- Description:
- SENSOR ANALOG -50C-150C SC70
- Quantity:
- Payment:
- Shipping:
Inventory:2,992
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Product details
Overview
LMT86QDCKTQ1 from Texas Instruments is an AEC-Q100 Grade 0 automotive-qualified analog temperature sensor with ±0.4°C typical accuracy, –10.9 mV/°C average output gain, and 5.4 µA quiescent current. It operates from 2.2 V to 5.5 V across –50°C to +150°C and delivers a push-pull analog voltage output inversely proportional to temperature-used in infotainment cluster thermal monitoring and powertrain coolant sensing.
For engineers reviewing the LMT86QDCKTQ1 datasheet, LMT86QDCKTQ1 pinout, LMT86QDCKTQ1 application, or LMT86QDCKTQ1 equivalent, key selection considerations include its low-voltage operation, short-circuit protected output, SC70-5 footprint compatibility with LM20/LM35, functional safety documentation support, and verified performance over automotive-grade temperature extremes without calibration.
Technical Context
The LMT86QDCKTQ1 uses a forward-biased base-emitter junction as its sensing element, buffered by a rail-to-rail CMOS amplifier with push-pull output stage. Its transfer function follows a parabolic model (–10.888 mV/°C slope with quadratic correction), enabling high linearity while maintaining monotonicity across –50°C to +150°C.
Thermal self-heating is minimized by direct die attachment to GND pin and low 5.4 µA supply current; junction-to-ambient thermal resistance is 275°C/W in SC70 package. Output drive capability of ±50 µA supports direct interfacing with SAR ADC sampling capacitors without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±0.4°C typical (±2.7°C max) over –50°C to +150°C - enables uncalibrated automotive thermal monitoring |
| Supply Voltage | 2.2 V to 5.5 V - supports direct connection to low-voltage microcontroller I/O or battery rails |
| Average Gain | –10.9 mV/°C - provides high sensitivity for precise analog temperature resolution |
| Quiescent Current | 5.4 µA - allows power cycling in battery-powered drones and sensor nodes |
| Power-On Time | 0.7 ms - ensures rapid response after wake-up in duty-cycled systems |
| Output Drive | ±50 µA push-pull - directly charges ADC input sampling capacitors without op-amp buffer |
| ESD Rating | HBM ±2500 V, CDM ±1000 V - meets AEC-Q100 Grade 0 requirements for automotive PCB handling |
Pinout & Package
Package: SC70-5 (SOT-5), 2.00 mm × 1.25 mm surface-mount body with exposed die attach pad connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 2) | Power Supply Ground | Direct die backside connection - serves as primary thermal path and reference plane |
| OUT (Pin 3) | Analog Output | Push-pull voltage output inversely proportional to temperature; short-circuit protected |
| VDD (Pins 4, 5) | Positive Supply | Dual-pin power input - reduces trace inductance and improves noise immunity at low supply currents |
Key Features
| Feature | Design Value |
|---|---|
| Footprint compatibility | SC70-5 layout matches industry-standard LM20/LM35 - enables drop-in replacement without PCB redesign |
| Functional safety support | Documentation available for ISO 26262 ASIL-B system integration - reduces validation effort in safety-critical ECUs |
| Thermal response optimization | Direct GND die attachment minimizes thermal resistance - improves measurement fidelity in fast-transient environments |
| Capacitive load tolerance | Stable up to 1100 pF - eliminates need for series resistor when driving typical microcontroller ADC inputs |
| Low-voltage operation | 2.2 V minimum supply - extends usable battery life in 3.3 V or coin-cell powered modules |
Applications
| Infotainment System Thermal Monitoring | Powertrain Coolant Sensing |
|---|---|
Use Scenario: Real-time temperature tracking of display driver ICs and audio amplifiers in automotive head units. IC Role / Device Role / Timing Role: Analog temperature sensor providing voltage output to MCU ADC for thermal throttling decisions. Use Value: ±0.4°C typical accuracy ensures reliable detection of 2°C–3°C thermal excursions before component derating occurs. |
Use Scenario: Monitoring engine coolant temperature near cylinder head in gasoline/diesel powertrain control modules. IC Role / Device Role / Timing Role: Primary analog temperature transducer feeding ECU closed-loop thermal management logic. Use Value: –50°C to +150°C range and AEC-Q100 Grade 0 qualification guarantee stable operation under extreme under-hood conditions. |
| Drone Battery Pack Monitoring | Smoke Detector Heat Threshold Detection |
Use Scenario: Measuring Li-ion battery pack temperature during flight to prevent thermal runaway in UAV applications. IC Role / Device Role / Timing Role: Low-power analog sensor enabling periodic wake-up and measurement in sleep-mode battery management. Use Value: 5.4 µA quiescent current and 0.7 ms power-on time minimize energy per reading - extends flight time by >1.2% over higher-IQ alternatives. |
Use Scenario: Detecting rapid ambient temperature rise (>10°C/min) in residential/commercial smoke detectors. IC Role / Device Role / Timing Role: High-sensitivity analog temperature element triggering alarm logic upon exceeding fixed thermal threshold. Use Value: –10.9 mV/°C gain provides >100 mV signal swing over 10°C rise - improves SNR and reduces false alarms vs thermistor-based designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMT85QDCKRQ1 | Average gain –8.2 mV/°C; 1.8 V min supply; ±0.7°C typical accuracy over 0°C–40°C | Better suited for mid-range industrial sensors where lower sensitivity and wider supply margin are prioritized | Select when operating below 2.2 V or requiring reduced output voltage swing per degree |
| LMT87QDCKRQ1 | Average gain –13.6 mV/°C; 2.7 V min supply; ±0.4°C typical accuracy over –40°C–125°C | Higher gain improves resolution in narrow-range applications but requires higher minimum supply voltage | Choose for enhanced ADC LSB resolution in 3.3 V systems where extended low-temp range is not required |
Compared with LMT86QDCKTQ1, LMT85QDCKRQ1 offers lower supply voltage flexibility at reduced sensitivity, while LMT87QDCKRQ1 increases resolution at the cost of minimum supply headroom - making LMT86QDCKTQ1 the optimal balance of low-voltage operation, high gain, and full automotive temperature coverage.
Availability
LMT86QDCKTQ1 is available at Aetrix Electronics and suitable for automotive infotainment, powertrain control, and drone battery management systems requiring stable component supply with AEC-Q100 compliance and long-term production continuity.
Supply support for LMT86QDCKTQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision sensing, power management, and automotive-grade ICs.
The LMT86QDCKTQ1 belongs to TI's LMT8x-Q1 automotive temperature sensor family, designed specifically for uncalibrated, high-accuracy analog thermal monitoring in harsh environments where reliability, low power, and AEC-Q100 compliance are mandatory.
FAQ
What is the operating temperature range of the LMT86QDCKTQ1?
The LMT86QDCKTQ1 operates across –50°C to +150°C, fully qualified to AEC-Q100 Grade 0 specifications. Its ±2.7°C maximum accuracy is maintained over this entire range without calibration, making it suitable for under-hood automotive applications such as engine coolant and transmission oil temperature sensing where extreme thermal stability is critical. This range is confirmed in Section 7.3 of the official SNIS201A datasheet.
Does the LMT86QDCKTQ1 require external calibration for automotive use?
No, the LMT86QDCKTQ1 does not require external calibration for automotive use. It maintains ±2.7°C maximum accuracy over –50°C to +150°C with no calibration needed, as verified in TI's AEC-Q100 qualification testing. The device achieves this through factory-trimmed precision circuitry and a stable parabolic transfer function documented in Table 8-1 of the SNIS201A datasheet.
Can the LMT86QDCKTQ1 interface directly with a microcontroller ADC input?
Yes, the LMT86QDCKTQ1 can interface directly with most microcontroller ADC inputs. Its ±50 µA push-pull output drives capacitive loads up to 1100 pF, matching typical SAR ADC sampling capacitor requirements. No external buffer is needed - Figure 9-1 in the SNIS201A datasheet shows a validated connection using only a filter capacitor (CFILTER) between OUT and the ADC input pin.
What package type is used for the LMT86QDCKTQ1?
The LMT86QDCKTQ1 uses the SC70-5 (also known as SOT-5 or DCK) package: a 2.00 mm × 1.25 mm surface-mount outline with five terminals. Pins 1 and 2 are GND, Pin 3 is OUT, and Pins 4 and 5 are VDD - confirmed in Figure 6-1 and Table 6-1 of the SNIS201A datasheet. This package is footprint-compatible with LM20 and LM35 sensors.
How does the LMT86QDCKTQ1 achieve low power consumption in battery-powered systems?
The LMT86QDCKTQ1 achieves ultra-low power consumption via 5.4 µA quiescent current and 0.7 ms power-on time, enabling effective power cycling. In battery-powered systems like drones, it can be powered directly from a microcontroller GPIO pin and turned off between readings - reducing average current to sub-microamp levels. This behavior is validated in Section 9.2.2 and Figure 9-3 of the SNIS201A datasheet.
LMT86QDCKTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Analog, Local
- Sensing Temperature - Local:
- -50°C ~ 150°C
- Sensing Temperature - Remote:
- -
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.2V ~ 5.5V
- Resolution:
- 10.9mV/°C
- Features:
- -
- Accuracy - Highest (Lowest):
- ±2.7°C
- Test Condition:
- -50°C ~ 150°C
- Operating Temperature:
- -50°C ~ 150°C
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- SC-70
LMT86QDCKTQ1 FAQ
1.How can I place an order for LMT86QDCKTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMT86QDCKTQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LMT86QDCKTQ1 reliable?
The price and inventory of LMT86QDCKTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMT86QDCKTQ1 is usually 5 days.
3.What payment methods are accepted for LMT86QDCKTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMT86QDCKTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMT86QDCKTQ1?
LMT86QDCKTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMT86QDCKTQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LMT86QDCKTQ1?
For technical support, including LMT86QDCKTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMT86QDCKTQ1 requirements.
6.How does Aetrix verify that LMT86QDCKTQ1 is sourced from the original manufacturer or authorized distributors?
All LMT86QDCKTQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LMT86QDCKTQ1 meets industry standards.
7.What is the process for return or replacement of LMT86QDCKTQ1?
All LMT86QDCKTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMT86QDCKTQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LMT86QDCKTQ1 part is unused and in its original packaging.
Return procedure for LMT86QDCKTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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