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Texas Instruments LM95071QIMF/NOPB
- Part No.:
- LM95071QIMF/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM95071QIMF/NOPB.pdf
- Description:
- SENSOR DIGITAL -40C-150C SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,251
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Product details
Overview
LM95071QIMF/NOPB from Texas Instruments is an AEC-Q100 Grade 0 automotive-qualified 13-bit-plus-sign SPI/MICROWIRE digital temperature sensor in a 5-pin SOT-23 package, delivering ±1°C accuracy from 0°C to +70°C and ±2°C across −40°C to +150°C, with 0.03125°C resolution and 280 µA typical operating current - used for real-time thermal monitoring in engine control units and battery management systems.
For engineers reviewing the LM95071QIMF/NOPB datasheet, LM95071QIMF/NOPB pinout, LM95071QIMF/NOPB application, or LM95071QIMF/NOPB equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade performance specs, and two documented alternative parts for thermal sensing in safety-critical vehicle subsystems.
Technical Context
The LM95071QIMF/NOPB integrates a delta-sigma ADC and on-die temperature transducer, supporting SPI and MICROWIRE protocols with clock polarity/phase agnostic timing (data sampled on SC rising edge, output shifted on falling edge). Its 14-bit two's complement output format encodes temperature with LSB = 0.03125°C and includes dedicated Manufacturer ID register access via shutdown mode.
It operates from 2.4 V to 5.5 V, draws only 6 µA in shutdown, and requires ≥228 ms between conversions for full accuracy. The device powers up in continuous conversion mode and uses Schmitt-trigger inputs on CS, SC, and SI/O to ensure noise immunity in automotive electrical environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.4 V to 5.5 V - compatible with standard 3.3 V and 5 V automotive microcontroller I/O rails without level-shifting. |
| Temperature Accuracy | ±1°C max (0°C to +70°C); ±2°C max (−40°C to +150°C) - meets ASIL-B thermal monitoring requirements for powertrain and ADAS modules. |
| Resolution | 0.03125°C per LSB - enables detection of sub-degree thermal drift critical for fan speed control and thermal throttling algorithms. |
| Operating Current | 280 µA typical - allows integration into always-on vehicle networks with minimal impact on standby power budget. |
| Shutdown Current | 6 µA typical - supports low-duty-cycle thermal polling in battery-powered telematics and remote keyless entry modules. |
| Conversion Time | 228 ms maximum - defines minimum sampling interval for closed-loop thermal protection in inverters and DC-DC converters. |
| Interface Protocol | SPI/MICROWIRE 3-wire (CS, SC, SI/O) - simplifies host connection using standard MCU hardware SPI peripherals without additional GPIO overhead. |
Pinout & Package
LM95071QIMF/NOPB is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained automotive PCB layouts and reflow-compatible with standard lead-free processes (MSL Level-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select input | Active-low enable signal; must be held high ≥160 ns between transactions to prevent bus contention. |
| 2 - GND | Power and signal ground | Common reference for VDD and all digital I/O; requires low-inductance connection to minimize measurement noise. |
| 3 - SI/O | Serial Input/Output bidirectional data line | Tri-state capable; transmits temperature data on falling SC edge and receives command bytes on rising SC edge. |
| 4 - SC | Serial clock input | Schmitt-triggered clock input; supports variable frequency up to 6.25 MHz (t1 ≥ 160 ns minimum period). |
| 5 - VDD | Positive supply voltage | Must be bypassed with 0.1 µF ceramic capacitor to GND; regulates internal bandgap reference and ADC core. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for −40°C to +150°C operation with HBM ±2000 V and CDM ±200 V ESD robustness - suitable for under-hood deployment. |
| 14-bit two's complement output | Directly encodes signed temperature values (e.g., 0x0003 = 0°C, 0xFFFF = −0.03125°C), eliminating host-side sign extension logic. |
| Manufacturer ID register | Accessible in shutdown mode (0xFF command); returns fixed 0x800F value - enables firmware verification of authentic TI silicon at boot. |
| Low-noise delta-sigma architecture | Typical output noise <1 LSB RMS - ensures stable thermal compensation in precision oscillators and voltage references. |
| Fast power-up recovery | First valid reading available after 228 ms from power-on reset - reduces system initialization latency in start-stop engine applications. |
Applications
| Engine Coolant Monitoring | Battery Pack Thermal Management |
|---|---|
|
Use Scenario: Real-time coolant temperature tracking in ICE and hybrid powertrains to regulate thermostat actuation and fan speed. IC Role / Device Role / Timing Role: Primary analog-to-digital temperature transducer interfacing directly with engine control unit (ECU) via SPI. Use Value: ±2°C accuracy over −40°C to +150°C ensures reliable cold-start enrichment and overheating protection without calibration. |
Use Scenario: Cell-level temperature sensing in 48 V mild-hybrid and EV traction battery packs for state-of-charge balancing and thermal runaway prevention. IC Role / Device Role / Timing Role: Distributed thermal node reporting via daisy-chained SPI to battery management system (BMS) master controller. Use Value: 0.03125°C resolution enables detection of localized hot spots before thermal propagation occurs. |
| ADAS Camera Module Housing | Onboard Charger Inverter Stage |
|
Use Scenario: Ambient and housing temperature monitoring inside rear-view and surround-view camera housings to compensate image sensor dark current drift. IC Role / Device Role / Timing Role: Secondary thermal sensor feeding correction coefficients to ISP firmware during boot and runtime. Use Value: 280 µA operating current allows continuous polling without compromising camera module's 100 mW power envelope. |
Use Scenario: Heat sink temperature feedback for IGBT gate drive modulation in 6.6 kW onboard chargers to prevent thermal derating during fast AC charging. IC Role / Device Role / Timing Role: High-accuracy thermal feedback element in closed-loop thermal management loop with MCU-based PWM control. Use Value: Shutdown mode (6 µA) enables periodic wake-up sampling during standby, extending system lifetime in intermittent-use applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM95071QIMFX/NOPB | Same die, identical specifications, active status with 3000-piece tape-and-reel packaging (vs. obsolete LM95071QIMF/NOPB). | Drop-in replacement requiring no design change; intended for new production builds and long-term supply continuity. | Select for new designs requiring guaranteed availability and TI's full product lifecycle support. |
| MAX6602MUA+ | 5-pin SOT-23, SPI interface, ±2°C accuracy (−40°C to +125°C), but lacks AEC-Q100 qualification and has 0.125°C resolution. | Limited to non-safety-critical cabin electronics (e.g., HVAC control panels); not approved for powertrain or ADAS use. | Consider only for cost-sensitive consumer-grade automotive infotainment where Grade 0 qualification is unnecessary. |
Compared with LM95071QIMF/NOPB, LM95071QIMFX/NOPB offers identical performance with assured supply chain continuity, while MAX6602MUA+ trades automotive qualification and resolution for lower unit cost in non-critical thermal roles.
Availability
LM95071QIMF/NOPB is available at Aetrix Electronics and suitable for engine control units, battery management systems, and ADAS camera modules requiring stable component supply in automotive Tier-1 production programs.
Supply support for LM95071QIMF/NOPB 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 ICs, power management, and precision sensing solutions.
The LM95071-Q1 product line was designed specifically for automotive thermal monitoring applications demanding AEC-Q100 compliance, wide temperature range operation, and SPI-compatible digital output - targeting powertrain, chassis, and electrification subsystems.
FAQ
What is the operating temperature range of the LM95071QIMF/NOPB?
The LM95071QIMF/NOPB is rated for −40°C to +150°C ambient operation, meeting AEC-Q100 Grade 0 requirements. Its temperature accuracy is specified as ±1°C maximum from 0°C to +70°C and ±2°C maximum across the full −40°C to +150°C range. This makes LM95071QIMF/NOPB suitable for under-hood and powertrain applications where extreme thermal stress is expected.
Does the LM95071QIMF/NOPB support both SPI and MICROWIRE interfaces?
Yes, the LM95071QIMF/NOPB implements a 3-wire serial interface fully compatible with both SPI and MICROWIRE standards. It uses chip select (CS), serial clock (SC), and bidirectional serial I/O (SI/O) pins. Data is sampled on the rising edge of SC and shifted out on the falling edge - enabling direct connection to standard MCU SPI peripherals without protocol translation. This dual compatibility is explicitly confirmed in the LM95071QIMF/NOPB datasheet section 8.5.1.
What is the resolution and output format of the LM95071QIMF/NOPB temperature data?
The LM95071QIMF/NOPB provides 14-bit two's complement temperature data with 0.03125°C per LSB resolution. The output is transmitted as a 16-bit word: the first 14 bits contain signed temperature data (D15–D2), while D1–D0 are fixed logic 1s. For example, 0x0003 represents 0°C and 0xFFFF represents −0.03125°C. This format is defined in LM95071QIMF/NOPB register map Table 3 and enables direct interpretation by host processors without scaling or sign extension.
How does the shutdown mode function in the LM95071QIMF/NOPB?
The LM95071QIMF/NOPB enters shutdown mode when the host writes 0xFF to its configuration register, reducing supply current to 6 µA typical. In shutdown, the device continues to respond to SPI reads and outputs its Manufacturer/Device ID (0x800F) on SI/O. This allows firmware to verify part authenticity while minimizing power - a feature confirmed in LM95071QIMF/NOPB datasheet section 8.4.1 and Table 2.
Is the LM95071QIMF/NOPB pin-compatible with other devices in the LM95071-Q1 family?
Yes, the LM95071QIMF/NOPB shares identical pinout, package (SOT-23 DBV), and electrical characteristics with all variants in the LM95071-Q1 family, including the active LM95071QIMFX/NOPB. All members use the same 5-pin layout (CS, GND, SI/O, SC, VDD) and support identical SPI/MICROWIRE timing. This pin-for-pin compatibility is documented in TI's LM95071-Q1 device information table and orderable addendum.
LM95071QIMF/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 150°C
- Sensing Temperature - Remote:
- -
- Output Type:
- SPI
- Voltage - Supply:
- 2.4V ~ 5.5V
- Resolution:
- 13 b
- Features:
- Shutdown Mode
- Accuracy - Highest (Lowest):
- ±1°C (±2°C)
- Test Condition:
- 0°C ~ 70°C (-40°C ~ 150°C)
- Operating Temperature:
- -40°C ~ 150°C
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- SOT-23-5
LM95071QIMF/NOPB FAQ
1.How can I place an order for LM95071QIMF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM95071QIMF/NOPB 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 LM95071QIMF/NOPB reliable?
The price and inventory of LM95071QIMF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM95071QIMF/NOPB is usually 5 days.
3.What payment methods are accepted for LM95071QIMF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM95071QIMF/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM95071QIMF/NOPB?
LM95071QIMF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM95071QIMF/NOPB 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 LM95071QIMF/NOPB?
For technical support, including LM95071QIMF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM95071QIMF/NOPB requirements.
6.How does Aetrix verify that LM95071QIMF/NOPB is sourced from the original manufacturer or authorized distributors?
All LM95071QIMF/NOPB 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 LM95071QIMF/NOPB meets industry standards.
7.What is the process for return or replacement of LM95071QIMF/NOPB?
All LM95071QIMF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM95071QIMF/NOPB, 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 LM95071QIMF/NOPB part is unused and in its original packaging.
Return procedure for LM95071QIMF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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