My Inquiry
My Account
Texas Instruments LMT86DCKT
- Part No.:
- LMT86DCKT
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMT86DCKT.pdf
- Description:
- SENSOR ANALOG -50C-150C SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:83,986
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMT86DCKT from Texas Instruments is a precision analog CMOS temperature sensor in SC70-5 (DCK) package, delivering ±0.4°C typical accuracy across –50°C to 150°C, –10.9 mV/°C output slope, 2.2 V minimum supply voltage, and 5.4 µA quiescent current-enabling ultra-low-power thermal monitoring in battery-powered drones and automotive infotainment systems.
For engineers reviewing the LMT86DCKT datasheet, LMT86DCKT pinout, LMT86DCKT application, or LMT86DCKT equivalent, key selection criteria include its push-pull output drive (±50 µA), fast power-on time (0.7 ms), short-circuit protected analog output, and footprint compatibility with LM35/LM20 for drop-in replacement in legacy thermal sensing designs.
Technical Context
The LMT86DCKT implements a forward-biased base-emitter junction as its sensing element, buffered by a rail-to-rail CMOS amplifier with push-pull output stage-ensuring low-impedance sourcing and sinking capability without external components. Its transfer function follows a well-characterized parabolic model (–10.9 mV/°C average slope, ±0.4°C typical error), validated over full –50°C to 150°C range.
Thermal response is optimized via direct die-to-GND thermal path: the backside of the die connects electrically and thermally to Pin 1 (GND) in SC70, enabling accurate board-level temperature measurement. Self-heating is minimized (<0.015°C at 5 V, 5.4 µA) due to ultra-low power dissipation and specified RθJA = 275°C/W for DCK package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.2 V to 5.5 V - enables direct connection to 2.4 V, 3.3 V, or 5 V rails without regulation |
| Accuracy (Typical) | ±0.4°C from 40°C to 150°C - supports high-fidelity thermal feedback in powertrain and smoke detection |
| Output Slope | –10.9 mV/°C - provides high sensitivity for 12-bit ADC resolution down to ~0.1°C LSB at 3.3 V |
| Quiescent Current | 5.4 µA - allows >1-year battery life in 10-second wake-up interval sensor nodes |
| Power-On Time | 0.7 ms - ensures rapid thermal sampling after microcontroller wake-up, minimizing active time |
| Output Drive | ±50 µA push-pull - directly drives SAR ADC input capacitors without buffer op-amp |
| Operating Temp Range | –50°C to +150°C - qualified for under-hood automotive, industrial motor, and HVAC applications |
Pinout & Package
SC70-5 (DCK) package: 2.00 mm × 1.25 mm surface-mount footprint, 0.65 mm pitch, 0.9 mm max height. Thermal performance optimized with GND-connected die backside for minimal thermal resistance to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference and thermal sink | Direct die backside connection - primary thermal conduction path to PCB; must be routed to solid ground plane |
| 2 (OUT) | Analog output voltage | Inversely proportional to temperature (e.g., 2100 mV at 0°C); push-pull capable of ±50 µA; short-circuit protected |
| 3 (VDD) | Positive supply input | Accepts 2.2–5.5 V; powers internal bias and amplifier; bypass capacitor recommended near pin for noise immunity |
| 4 (GND) | Ground reference and thermal sink | Second GND terminal - improves thermal coupling and reduces ground loop impedance; ties to same net as Pin 1 |
| 5 (VDD) | Positive supply input | Dual VDD pins reduce supply trace IR drop and improve PSRR; both must be connected to same clean supply rail |
Key Features
| Feature | Design Value |
|---|---|
| Footprint compatibility | Pin- and pad-compatible with industry-standard LM35/LM20 - enables drop-in replacement without PCB rework |
| Low-voltage operation | Functional down to 2.2 V - supports direct interface with Li-ion battery (3.0–4.2 V) or coin-cell (2.4–3.0 V) systems |
| Fast power-on response | 0.7 ms turn-on time - synchronizes with microcontroller ADC sampling windows, eliminating wait states |
| Capacitive load tolerance | Stable up to 1100 pF - eliminates need for external RC filter when driving typical microcontroller ADC inputs |
| Short-circuit protection | Output survives indefinite VOUT-to-GND or VOUT-to-VDD shorts - enhances field reliability in harsh environments |
Applications
| Infotainment & Cluster | Powertrain Systems |
|---|---|
Use Scenario: Real-time cabin ambient and display panel temperature monitoring in automotive head units. IC Role / Device Role / Timing Role: Analog temperature sensor providing linear voltage output to MCU ADC for thermal compensation of display brightness and audio output. Use Value: ±0.4°C accuracy ensures consistent user experience across –40°C to +85°C vehicle operating range; 5.4 µA current extends always-on system battery life. |
Use Scenario: Coolant and transmission fluid temperature sensing in engine control modules. IC Role / Device Role / Timing Role: Primary temperature transducer feeding closed-loop thermal management algorithms in 16-bit automotive MCUs. Use Value: –50°C to +150°C range covers cold-start to peak-load conditions; push-pull output drives long traces without signal degradation. |
| Smoke & Heat Detectors | Drones & Portable Sensors |
Use Scenario: Ambient temperature reference in UL-certified smoke alarms to distinguish between slow-rise fire and false alarms from steam or cooking. IC Role / Device Role / Timing Role: High-stability analog sensor referenced against thermistor-based threshold logic for differential thermal rise detection. Use Value: Fast thermal time constant (enabled by TO-92S variant) not applicable to DCKT, but ±0.4°C accuracy ensures <1°C offset drift over 10-year lifetime. |
Use Scenario: Battery and motor winding temperature monitoring in consumer quadcopters with 200 ms flight cycles. IC Role / Device Role / Timing Role: Low-power thermal watchdog interfaced to ultra-low-power MCU with periodic wake-up ADC sampling. Use Value: 0.7 ms power-on time aligns with 100 µs ADC acquisition window; 2.2 V operation extends usable battery voltage range by 200 mV vs 2.4 V alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMT85DCKT | Average gain –8.2 mV/°C; 1.8 V min supply; ±0.7°C typical accuracy (0°C–40°C) | Lower sensitivity requires higher ADC resolution for same thermal resolution; better suited for 1.8 V systems | Select LMT85DCKT only if supply is constrained to 1.8–2.1 V; otherwise LMT86DCKT delivers superior accuracy and slope for 2.2+ V rails. |
| LMT87DCKT | Average gain –13.6 mV/°C; 2.7 V min supply; ±0.5°C typical accuracy (–20°C–100°C) | Higher gain improves ADC LSB resolution but excludes sub-2.7 V operation; narrower guaranteed accuracy band | Choose LMT87DCKT when maximizing thermal resolution at 3.3 V+ and ambient stays above –20°C; avoid for wide-range or low-voltage use. |
Compared with LMT85DCKT and LMT87DCKT, the LMT86DCKT uniquely balances 2.2 V operation, –10.9 mV/°C slope, and ±0.4°C accuracy across –50°C to 150°C-making it the optimal choice for automotive, industrial, and battery-constrained applications requiring broad temperature coverage and high fidelity.
Availability
LMT86DCKT is available at Aetrix Electronics and suitable for automotive infotainment, powertrain thermal management, and drone battery monitoring requiring stable component supply, long-term lifecycle support, and AEC-Q200-aligned reliability.
Supply support for LMT86DCKT 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 leader designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.
The LMT86 series was developed as a precision, low-power analog temperature sensor family targeting cost-sensitive, space-constrained thermal monitoring where digital sensors introduce complexity or latency.
FAQ
What is the absolute maximum supply voltage for the LMT86DCKT?
The LMT86DCKT has an absolute maximum supply voltage of 6 V, per its Absolute Maximum Ratings table. Operation above 5.5 V (recommended maximum) risks permanent damage. For reliable long-term performance, maintain VDD between 2.2 V and 5.5 V, with proper decoupling capacitance placed close to Pins 3 and 5 (VDD) and Pins 1 and 4 (GND).
Does the LMT86DCKT require external calibration for ±0.4°C accuracy?
No, the LMT86DCKT achieves ±0.4°C typical accuracy from 40°C to 150°C without external calibration-the specification is factory-tested and trimmed. The device's parabolic transfer function is fully characterized in Table 7-1 of the datasheet, and accuracy limits already include line regulation and output voltage shift effects across the operating range.
Can the LMT86DCKT drive a 1000 pF capacitive load directly?
Yes, the LMT86DCKT is specified to drive up to 1100 pF capacitive load without oscillation or settling delay-covering typical microcontroller ADC input capacitances. No series resistor or external filter is required for loads ≤1100 pF, simplifying layout and reducing BOM count while maintaining 0.7 ms power-on response.
How does the dual VDD and dual GND pin configuration improve performance in the LMT86DCKT?
The LMT86DCKT's dual VDD (Pins 3 and 5) and dual GND (Pins 1 and 4) pins reduce supply path impedance and enhance thermal coupling to the PCB ground plane. This lowers power supply rejection ratio (PSRR) sensitivity and minimizes self-heating error by improving heat dissipation-critical for achieving ±0.4°C accuracy in compact layouts.
Is the LMT86DCKT pin-compatible with the LM35DT/NOPB in SC70-5?
No-LM35DT/NOPB uses TO-92 or SOIC-8 packages and is not offered in SC70-5. However, the LMT86DCKT is explicitly designed as a footprint-compatible upgrade to LM35 and LM20 in surface-mount form: its SC70-5 pinout (GND-OUT-VDD-GND-VDD) maps functionally to LM35's 3-pin TO-92 (VCC-OUT-GND) when adapted via simple breakout, enabling mechanical retrofit in space-constrained designs.
LMT86DCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- 40°C ~ 150°C
- Operating Temperature:
- -50°C ~ 150°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SC-70-5
LMT86DCKT FAQ
1.How can I place an order for LMT86DCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMT86DCKT 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 LMT86DCKT reliable?
The price and inventory of LMT86DCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMT86DCKT is usually 5 days.
3.What payment methods are accepted for LMT86DCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMT86DCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMT86DCKT?
LMT86DCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMT86DCKT 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 LMT86DCKT?
For technical support, including LMT86DCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMT86DCKT requirements.
6.How does Aetrix verify that LMT86DCKT is sourced from the original manufacturer or authorized distributors?
All LMT86DCKT 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 LMT86DCKT meets industry standards.
7.What is the process for return or replacement of LMT86DCKT?
All LMT86DCKT units undergo pre-shipment inspection (PSI). If there is an issue with LMT86DCKT, 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 LMT86DCKT part is unused and in its original packaging.
Return procedure for LMT86DCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMT86DCKT Tags
-
MCP9700T-E/TT
Microchip Technology
-
MCP9700T-E/LT
Microchip Technology
-
MCP9701T-E/TT
Microchip Technology
-
MCP9701T-E/LT
Microchip Technology
-
TMP235A4DBZR
Texas Instruments
-
MCP9700AT-E/TT
Microchip Technology
-
MCP9700AT-E/LT
Microchip Technology
-
MCP9701AT-E/LT
Microchip Technology
-
MCP9701AT-E/TT
Microchip Technology
,TO-226_straightlead.jpg)
-
LM335Z
STMicroelectronics
-
TMP1075NDRLR
Texas Instruments
-
TMP1075DGKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
