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Texas Instruments LMT01ELPGQ1
- Part No.:
- LMT01ELPGQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- TO-226-2, TO-92-2 (TO-226AC)
- Datasheet:
-
LMT01ELPGQ1.pdf
- Description:
- SENSOR DIGITAL -20C-90C TO92-2
- Quantity:
- Payment:
- Shipping:
Inventory:389
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Product details
Overview
LMT01ELPGQ1 from Texas Instruments is a high-accuracy, AEC-Q100 Grade 0 qualified 2-pin digital temperature sensor with pulse-count current-loop output. It delivers ±0.5°C max accuracy from –20°C to 90°C, 0.0625°C resolution per pulse, and operates across 2.15 V to 5.5 V (VP–VN) in automotive battery management and engine control systems.
For engineers reviewing the LMT01ELPGQ1 datasheet, LMT01ELPGQ1 pinout, LMT01ELPGQ1 application, or LMT01ELPGQ1 equivalent, this page provides verified technical context, real-world timing behavior, validated package mapping, confirmed pulse-to-temperature transfer function, and direct alternative part comparisons for automotive-grade thermal sensing designs.
Technical Context
The LMT01ELPGQ1 uses an internal thermal diode and ΣΔ ADC with on-chip voltage regulator to convert junction temperature into a proportional pulse count. Its output is a unidirectional current pulse train (34 µA low / 125 µA high) at ~88 kHz, gated for ≤50 ms per conversion cycle.
Each pulse represents 0.0625°C; total pulse count maps linearly to temperature via lookup table (LUT) across –40°C to 150°C. Conversion repeats every 104 ms max with no external clock or I²C/SPI interface required - only a GPIO or comparator input is needed for pulse counting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy (–20°C to 90°C) | ±0.5°C maximum - enables calibration-free thermal monitoring in battery pack hot spots and engine coolant lines. |
| Pulse resolution | 0.0625°C per pulse - supports fine-grained thermal trending without software interpolation. |
| Supply range (VP–VN) | 2.15 V to 5.5 V - compatible with 3.3 V and 5 V MCU rails; drops to 2.0 V post-conversion for low-voltage wake-up. |
| Conversion interval | ≤104 ms - ensures rapid thermal response for ADAS thermal safety checks and HVAC feedback loops. |
| Output current levels | 34 µA (low), 125 µA (high) - generates clean 340 mV–1.25 V swing across 10 kΩ pull-up for direct GPIO/comparator interfacing. |
| Temperature range | –40°C to +150°C - meets AEC-Q100 Grade 0 requirements for under-hood and traction battery applications. |
| EMI immunity | Integrated EMI suppression - maintains signal integrity in noisy automotive environments without shielding or filtering. |
Pinout & Package
TO-92 (LPG) package: 4.00 mm × 3.15 mm × 1.5 mm, 2-pin through-hole, wettable flanks, half-size vs traditional TO-92.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VP | Positive supply terminal | Connects to system power or bias resistor; regulates internal VDD for ADC and interface circuitry. |
| VN | Negative output terminal | Sinks pulsed current (34/125 µA); forms current loop with VP - no ground reference required. |
Key Features
| Feature | Design Value |
|---|---|
| 2-pin pulse-count interface | Eliminates need for ADC, I²C, or SPI - reduces BOM count and firmware overhead in MCU-limited systems. |
| AEC-Q100 Grade 0 qualification | Validated for –40°C to +150°C operation with HBM ±2000 V and CDM ±750 V ESD ratings - suitable for safety-critical automotive use. |
| Floating supply architecture | Operates without system ground reference - enables isolation in high-side sensing, floating battery modules, and probe-based deployments. |
| Up to 2-meter wire length support | Robust current-loop signaling tolerates cable capacitance and noise - ideal for remote temperature probes in HVAC ducts or battery packs. |
| Self-contained thermal measurement | No external components required beyond pull-up resistor - simplifies layout, improves reliability, and cuts assembly cost. |
Applications
| Battery Management Systems | Engine Control Units |
|---|---|
Use Scenario: Real-time cell-level temperature monitoring in 48 V mild-hybrid and EV traction battery packs. IC Role / Device Role / Timing Role: Direct 2-wire probe interface delivering calibrated pulse counts every 104 ms for thermal runaway detection and charge balancing. Use Value: ±0.5°C accuracy over –20°C to 90°C eliminates per-cell calibration; floating supply allows placement on isolated busbars. |
Use Scenario: Coolant and oil temperature sensing near turbochargers and exhaust manifolds in gasoline/diesel engines. IC Role / Device Role / Timing Role: High-temperature junction sensor (up to 150°C) with fast 104 ms update for closed-loop thermal management and fault diagnostics. Use Value: AEC-Q100 Grade 0 rating and integrated EMI immunity ensure stable operation in high-noise, high-heat under-hood environments. |
| ADAS Sensor Modules | HVAC Remote Probes |
Use Scenario: Thermal derating of radar and camera modules mounted behind vehicle grilles or bumpers. IC Role / Device Role / Timing Role: Compact TO-92 probe embedded in module housing, reporting temperature via pulse count to host MCU GPIO. Use Value: 3.15 mm × 4.00 mm footprint minimizes intrusion; 2-pin design avoids routing ground in space-constrained enclosures. |
Use Scenario: Wall-mounted or duct-installed temperature probes with up to 2 m cable run in commercial HVAC systems. IC Role / Device Role / Timing Role: Current-loop transmitter converting local temperature to pulse count for microcontroller counting over long wires. Use Value: Immunity to induced noise and voltage drop across long cables ensures reliable readings without shielded twisted pair. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-pin digital temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM71QIMF/NOPB | 12-bit SPI output, 3-pin SOT-23, ±1.5°C accuracy, requires dedicated SPI interface and external power supply. | Not suitable for floating or 2-wire probe configurations; needs PCB-level SPI routing and decoupling. | Select when SPI bandwidth and multi-sensor daisy-chaining are required; avoid for isolated or wire-probe use cases. |
| STS4030-DIS | I²C interface, 2.0 V to 5.5 V, ±0.2°C accuracy, 1.5 mm × 1.5 mm DFN, requires I²C pull-ups and address configuration. | Requires shared bus arbitration and software stack support; not viable for single-GPIO microcontrollers or high-EMI zones. | Choose for ultra-high accuracy in compact consumer electronics; not recommended for automotive wiring harnesses or legacy MCUs. |
Compared with LM71QIMF/NOPB and STS4030-DIS, the LMT01ELPGQ1 uniquely combines AEC-Q100 Grade 0 qualification, true 2-pin operation, and pulse-count simplicity - enabling robust, low-cost thermal sensing where interface pins, layout area, or EMI resilience are constrained.
Availability
LMT01ELPGQ1 is available at Aetrix Electronics and suitable for automotive battery management, engine control units, ADAS thermal monitoring, and HVAC remote probe applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMT01ELPGQ1 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 automotive, industrial, and power management ICs.
The LMT01ELPGQ1 belongs to TI's AEC-Q100-qualified precision temperature sensor family, designed specifically for robust, calibration-free thermal monitoring in harsh automotive environments where size, noise immunity, and interface simplicity are critical.
FAQ
What is the operating temperature range of the LMT01ELPGQ1?
The LMT01ELPGQ1 is rated for –40°C to +150°C, meeting AEC-Q100 Grade 0 requirements. Its ±0.5°C maximum accuracy applies from –20°C to 90°C, with ±0.625°C accuracy extended to –40°C and 120°C. Operation beyond 150°C risks permanent damage, and the device is not characterized above that limit. The LMT01ELPGQ1's thermal diode and regulated internal supply enable stable performance across this full automotive range.
How does the LMT01ELPGQ1 interface with a microcontroller?
The LMT01ELPGQ1 interfaces using a 2-pin current-loop pulse-count method: it outputs a train of current pulses (34 µA low / 125 µA high) at ~88 kHz, which a simple pull-up resistor converts to voltage swings (e.g., 340 mV–1.25 V with 10 kΩ). This signal connects directly to a GPIO pin or comparator input; firmware gates a counter for ≤50 ms to capture pulse count, then computes temperature using the documented LUT or linear equation. No I²C, SPI, or ADC is required - the LMT01ELPGQ1 handles all conversion internally.
What package type does the LMT01ELPGQ1 use, and what are its dimensions?
The LMT01ELPGQ1 uses the TO-92 (LPG) package: 4.00 mm × 3.15 mm × 1.5 mm, with 2 leads and wettable flanks for automated optical inspection. It is half the size of a standard TO-92 and optimized for through-hole mounting in space-constrained automotive modules. The LMT01ELPGQ1's LPG variant is distinct from the WSON (DQX) option and shares identical electrical specs but differs in thermal resistance (RθJA = 177°C/W) and mechanical fit.
Does the LMT01ELPGQ1 require external calibration or compensation?
No, the LMT01ELPGQ1 requires no system-level calibration or hardware/software compensation. Its ±0.5°C accuracy from –20°C to 90°C is achieved at wafer test and maintained across voltage (2.15 V–5.5 V) and temperature without user intervention. The LMT01ELPGQ1's internal ΣΔ ADC, thermal diode, and voltage regulator ensure consistent performance - only pulse counting and LUT-based or linear conversion are needed in firmware.
Can the LMT01ELPGQ1 be used in long-cable applications, and what is the maximum supported length?
Yes, the LMT01ELPGQ1 supports wire lengths up to 2 meters due to its current-loop output architecture, which rejects common-mode noise and tolerates cable capacitance. Signal integrity remains robust because the 34 µA/125 µA current pulses generate predictable voltage swings across a pull-up resistor, even with >100 pF stray capacitance. The LMT01ELPGQ1's integrated EMI suppression and floating supply further enhance reliability in long-run automotive and HVAC installations.
LMT01ELPGQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-226-2, TO-92-2 (TO-226AC)
- Packaging:
- Bulk
- Product Status:
- Active
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -20°C ~ 90°C
- Sensing Temperature - Remote:
- -
- Output Type:
- Pulse Count
- Voltage - Supply:
- 2V ~ 5.5V
- Resolution:
- 0.0625°C
- Features:
- -
- Accuracy - Highest (Lowest):
- ±0.5°C (±0.625°C)
- Test Condition:
- -20°C ~ 90°C (-40°C)
- Operating Temperature:
- -40°C ~ 150°C
- Mounting Type:
- Through Hole
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- TO-92-2
LMT01ELPGQ1 FAQ
1.How can I place an order for LMT01ELPGQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMT01ELPGQ1 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 LMT01ELPGQ1 reliable?
The price and inventory of LMT01ELPGQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMT01ELPGQ1 is usually 5 days.
3.What payment methods are accepted for LMT01ELPGQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMT01ELPGQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMT01ELPGQ1?
LMT01ELPGQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMT01ELPGQ1 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 LMT01ELPGQ1?
For technical support, including LMT01ELPGQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMT01ELPGQ1 requirements.
6.How does Aetrix verify that LMT01ELPGQ1 is sourced from the original manufacturer or authorized distributors?
All LMT01ELPGQ1 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 LMT01ELPGQ1 meets industry standards.
7.What is the process for return or replacement of LMT01ELPGQ1?
All LMT01ELPGQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMT01ELPGQ1, 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 LMT01ELPGQ1 part is unused and in its original packaging.
Return procedure for LMT01ELPGQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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