LMT85DCKTIn StockTexas Instruments
LMT85DCKT is a precision analog output CMOS temperature sensor from Texas Instruments, operating over a -50°C to +150°C range with a linear output voltage inversely proportional to temperature. It features ultra-low supply current of 5.4 µA typical, wide supply voltage range of 1.5 V to 5.5 V, and is available in the tiny SOT-23 and SC-70 packages, making it ideal for space-constrained portable, industrial, and consumer applications.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $0.3136(MOQ 25)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low quiescent current of 5.4 µA typical for extended battery life
- Wide operating temperature range: −50°C to +150°C
- Wide supply voltage range: 1.5 V to 5.5 V
- Linear analog voltage output inversely proportional to temperature
- Tiny SC-70 package for space-constrained designs
- No calibration required — factory trimmed for accuracy
- CMOS process enables low power operation suitable for IoT and wearables
Applications
The LMT85DCKT is widely used in portable consumer electronics, wearables, and IoT sensor nodes where ultra-low power consumption and compact size are critical. It is also well-suited for industrial equipment, HVAC systems, and medical devices that require accurate temperature monitoring over a broad range. Its simple analog output and single-supply operation make it easy to integrate with microcontrollers and ADCs in both battery-powered and line-powered designs.
Specifications
| YTEOL | 0 |
| Accuracy-Max (Cel) | 2.7Cel |
| Additional Feature | SHORT CIRCUIT PROTECTION |
| Body Breadth | 1.25mm |
| Body Height | 0.95mm |
| Body Length or Diameter | 2mm |
| Housing | PLASTIC |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Operating Current-Max | 0.0081mA |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP5/6,.08 |
| Package Shape/Style | RECTANGULAR |
| Sensors/Transducers Type | TEMPERATURE SENSOR,ANALOG,VOLTAGE OUTPUT |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 1.8V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Matte Tin (Sn) |
| Termination Type | SOLDER |
| ## LMT85DCKT Alternates Showing results | Image |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage of the LMT85DCKT at 25°C?
At 25°C, the LMT85DCKT produces a typical output voltage of approximately 1299 mV. The output decreases linearly as temperature increases, with a sensitivity (transfer function slope) of about −8.2 mV/°C. This inverse relationship means higher temperatures result in lower output voltages, which must be accounted for when designing your signal conditioning circuit.
What supply voltage does the LMT85DCKT require?
The LMT85DCKT operates over a wide supply voltage range of 1.5 V to 5.5 V, making it compatible with both 1.8 V and 3.3 V/5 V systems. Its ultra-low quiescent current of 5.4 µA typical allows it to run efficiently from coin cells or energy-harvesting sources, which is ideal for battery-powered IoT and wearable applications.
What package does the LMT85DCKT come in, and what are its dimensions?
The LMT85DCKT is housed in a 3-pin SC-70 (SOT-323) package. The SC-70 package measures approximately 2.0 mm × 1.25 mm with a height of 0.95 mm, making it one of the smallest single-supply analog temperature sensor packages available. It is well-suited for high-density PCB designs where board space is at a premium.
What are suitable alternatives to the LMT85DCKT?
Common alternatives to the LMT85DCKT include the LMT86 (higher accuracy, same package family), the TMP36 (wider supply range, positive-slope output), and the MCP9700 from Microchip (0°C to 70°C range, low cost). When selecting an alternative, compare temperature range, output slope polarity, package size, accuracy specifications, and supply current to ensure compatibility with your design requirements.
How do I convert LMT85DCKT output voltage to temperature in firmware?
Use the transfer function provided in the datasheet: T(°C) = (V_OUT − 1299 mV) / (−8.2 mV/°C) + 25. In practice, read the ADC value, convert it to millivolts using your reference voltage, then apply the formula. For best accuracy, use the exact coefficients from Table 1 of the TI datasheet (document SNIS166), which provides polynomial correction coefficients valid across the full −50°C to +150°C range.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $0.8224 | $20.56 |
| 50+ | $0.7846 | $39.23 |
| 100+ | $0.7501 | $75.01 |
| 555+ | $0.3619 | $200.85 |
| 715+ | $0.3498 | $250.11 |
| 960+ | $0.3136 | $301.06 |
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