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Texas Instruments TMP112AQDRLRQ1
- Part No.:
- TMP112AQDRLRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- SOT-563, SOT-666
- Datasheet:
-
TMP112AQDRLRQ1.pdf
- Description:
- SENSOR DIGITAL -40C-125C 6SOT
- Quantity:
- Payment:
- Shipping:
Inventory:6,223
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Product details
Overview
TMP112AQDRLRQ1 from Texas Instruments is an AEC-Q100 Grade-1 automotive digital temperature sensor in SOT563 package, delivering ±0.5°C max accuracy from 0°C to 65°C and ±1°C max over –40°C to 125°C, with 12-bit resolution, I²C/SMBus interface, and 7μA average active current - used for thermal monitoring in battery management units and vehicle control units.
For engineers reviewing the TMP112AQDRLRQ1 datasheet, TMP112AQDRLRQ1 pinout, TMP112AQDRLRQ1 application, or TMP112AQDRLRQ1 equivalent, key selection considerations include its automotive-grade thermal accuracy, low-quiescent-current operation across 1.4V–3.6V supply, dedicated ALERT/ADD0 pins in SOT563, and functional safety documentation support.
Technical Context
The TMP112AQDRLRQ1 integrates a precision diode-based temperature sensing element with a ΔΣ ADC and on-chip oscillator, enabling direct 0.0625°C LSB digital output without external signal conditioning. Its control logic supports four programmable conversion rates (0.25–8 Hz) and user-calibration mode for improved accuracy down to ±0.17°C.
It implements open-drain I²C-compatible serial interface with full SMBus support, including timeout detection and alert functionality triggered by programmable high/low temperature thresholds. The device operates across –40°C to 125°C with HBM ±2kV and CDM ±1kV ESD robustness per AEC-Q100.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy (0°C to 65°C) | ±0.5°C max - enables precise cabin thermal feedback without calibration in infotainment systems |
| Accuracy (–40°C to 125°C) | ±1°C max - meets Grade-1 automotive thermal protection requirements for VCU and BMS |
| Supply Voltage Range | 1.4V to 3.6V - compatible with 3.3V automotive microcontroller domains and low-voltage battery rails |
| Average Active Current | 7μA at 4 Hz - extends battery life in always-on thermal monitoring nodes |
| Resolution | 12-bit (0.0625°C LSB) - provides fine-grained temperature discrimination for closed-loop thermal control |
| Digital Interface | I²C/SMBus - interoperable with standard automotive MCU peripherals and supports multi-drop bus configuration |
| Package | SOT563 (DRL), 1.6mm × 1.6mm - compact footprint suitable for space-constrained ECUs and sensor modules |
Pinout & Package
SOT563 (DRL) 6-pin plastic package, 1.6mm × 1.6mm × 0.6mm profile, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SCL) | Input | Serial clock line - synchronizes I²C read/write transfers; supports Fast Mode (400 kHz) and Fast Mode Plus (1 MHz) |
| 2 (GND) | Power reference | System ground return - must be low-impedance connection to minimize measurement offset |
| 3 (ALERT) | Output | Open-drain overtemperature alert - requires external pullup; asserts when temperature exceeds programmed threshold |
| 4 (ADD0) | Input | Address select - sets one of four I²C slave addresses (GND, V+, SCL, or SDA) for multi-sensor configurations |
| 5 (V+) | Power input | Supply voltage input - accepts 1.4V–3.6V; bypass capacitor required for noise immunity |
| 6 (SDA) | Input/Output | Serial data line - bidirectional open-drain I²C data channel with internal pullup disable capability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade-1 qualification | Validated for automotive use from –40°C to 125°C ambient, with HBM ±2kV and CDM ±1kV ESD ratings |
| User-calibration capability | Enables system-level correction to achieve ±0.17°C accuracy via slope compensation registers |
| Programmable conversion rate | Four selectable rates (0.25/1/4/8 Hz) - balances power consumption vs. thermal response time |
| Dedicated ALERT and ADD0 pins | Hardware interrupt signaling and flexible I²C addressing - eliminates software polling and simplifies multi-sensor networks |
| Functional safety documentation | Available FIT rate, failure mode analysis, and diagnostic coverage guidance for ISO 26262 ASIL-B integration |
Applications
| Infotainment & Digital Cockpit | Battery Management Unit (BMU) |
|---|---|
Use Scenario: Real-time thermal monitoring of display driver ICs and SoC junction temperatures in head units. IC Role / Device Role / Timing Role: Local temperature sensor providing 12-bit digital readings via I²C every 250 ms for thermal throttling decisions. Use Value: Prevents display artifacts and processor shutdown by maintaining safe operating temperature within ±0.5°C accuracy at 65°C. |
Use Scenario: Cell-level temperature acquisition in 12S lithium-ion battery packs for state-of-charge and thermal runaway prevention. IC Role / Device Role / Timing Role: High-accuracy analog front-end replacement with direct digital output, reducing BOM count and calibration effort. Use Value: Enables ±1°C accuracy across –40°C to 125°C, meeting ASIL-C thermal fault detection timing requirements. |
| Vehicle Control Unit (VCU) | In-Cabin Sensing System |
Use Scenario: Ambient and power stage temperature supervision in 48V DC-DC converters and motor gate drivers. IC Role / Device Role / Timing Role: Standalone thermal watchdog with ALERT pin driving MCU interrupt for immediate thermal derating action. Use Value: Reduces thermal protection latency to <40 ms using hardware alert, avoiding software polling delays. |
Use Scenario: Occupant presence and comfort temperature sensing behind dashboard trim panels. IC Role / Device Role / Timing Role: Low-power temperature node operating at 0.25 Hz conversion rate to extend 10-year battery life. Use Value: Achieves 7μA average current at 4 Hz and 0.5μA shutdown current - critical for coin-cell-powered sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP102AQDRLRQ1 | ±2°C max accuracy over –25°C to 85°C; same SOT563 package and pinout | Lower accuracy grade; not suitable for Grade-1 thermal protection where ±1°C is required | Select TMP102AQDRLRQ1 only for cost-sensitive non-safety-critical cabin ambient sensing |
| TMP112DQDRLRQ1 | Enhanced accuracy (±0.4°C at 0°C–65°C); identical SOT563 package and pinout; wider 1.4V–5.5V supply range | Supports higher-voltage domains (e.g., 5V MCU interfaces); no user-calibration mode | Choose TMP112DQDRLRQ1 when extended supply range or tighter accuracy is needed without calibration overhead |
Compared with TMP102AQDRLRQ1, TMP112AQDRLRQ1 delivers 1.5× better accuracy and functional safety documentation; compared with TMP112DQDRLRQ1, it retains calibration capability but trades supply flexibility for automotive-specific optimization.
Availability
TMP112AQDRLRQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, battery management units, and vehicle control units requiring stable component supply across long production lifecycles and rigorous environmental validation.
Supply support for TMP112AQDRLRQ1 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 solutions.
The TMP112-Q1 product line is designed specifically for AEC-Q100 Grade-1 automotive thermal management applications, emphasizing high accuracy, low power, and functional safety readiness in miniature packages.
FAQ
What is the maximum operating temperature range for the TMP112AQDRLRQ1?
The TMP112AQDRLRQ1 is specified for continuous operation from –40°C to +125°C ambient temperature, fully qualified per AEC-Q100 Grade-1 requirements. This range covers under-hood and cabin-mounted applications, including battery management and powertrain control units where thermal extremes occur.
Does the TMP112AQDRLRQ1 support user calibration to improve accuracy?
Yes, the TMP112AQDRLRQ1 includes a documented calibration feature that allows system-level correction of temperature error slopes. When implemented, this enables accuracy improvement to ±0.17°C - a capability not present in the TMP112D-Q1 variant and critical for high-fidelity thermal control loops.
What I²C bus speeds does the TMP112AQDRLRQ1 support?
The TMP112AQDRLRQ1 supports standard-mode (100 kHz), fast-mode (400 kHz), and fast-mode plus (1 MHz) I²C operation. Timing parameters are validated across the full –40°C to 125°C range, ensuring reliable communication in automotive environments with variable bus loading and noise.
Is the TMP112AQDRLRQ1 pin-compatible with other devices in the TMP112 family?
Yes, the TMP112AQDRLRQ1 shares identical SOT563 (DRL) pinout and footprint with TMP112DQDRLRQ1 and TMP102AQDRLRQ1. This enables drop-in replacement in existing designs where enhanced accuracy or functional safety documentation is required without PCB revision.
What is the typical shutdown current consumption of the TMP112AQDRLRQ1?
The TMP112AQDRLRQ1 draws 0.5 μA typical shutdown current at 25°C and 1.4V–3.6V supply, with a maximum of 1 μA across temperature and voltage extremes. This ultra-low quiescent current makes it suitable for always-on thermal monitoring in battery-backed automotive subsystems.
TMP112AQDRLRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 1.4V ~ 3.6V
- Resolution:
- 12 b
- Features:
- One-Shot, Output Switch, Shutdown Mode
- Accuracy - Highest (Lowest):
- ±0.3°C (±1°C)
- Test Condition:
- 25°C (-40°C ~ 125°C)
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- SOT-5X3
TMP112AQDRLRQ1 FAQ
1.How can I place an order for TMP112AQDRLRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP112AQDRLRQ1 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 TMP112AQDRLRQ1 reliable?
The price and inventory of TMP112AQDRLRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP112AQDRLRQ1 is usually 5 days.
3.What payment methods are accepted for TMP112AQDRLRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP112AQDRLRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP112AQDRLRQ1?
TMP112AQDRLRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP112AQDRLRQ1 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 TMP112AQDRLRQ1?
For technical support, including TMP112AQDRLRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP112AQDRLRQ1 requirements.
6.How does Aetrix verify that TMP112AQDRLRQ1 is sourced from the original manufacturer or authorized distributors?
All TMP112AQDRLRQ1 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 TMP112AQDRLRQ1 meets industry standards.
7.What is the process for return or replacement of TMP112AQDRLRQ1?
All TMP112AQDRLRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TMP112AQDRLRQ1, 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 TMP112AQDRLRQ1 part is unused and in its original packaging.
Return procedure for TMP112AQDRLRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TMP112AQDRLRQ1 Tags
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MCP9700T-E/TT
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