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Texas Instruments TMP411DQDGKRQ1
- Part No.:
- TMP411DQDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TMP411DQDGKRQ1.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,025
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Product details
Overview
TMP411DQDGKRQ1 from Texas Instruments is an AEC-Q100 Grade-1 automotive-qualified remote/local temperature sensor IC with ±0.8°C local and remote accuracy over –40°C to +125°C, 1.62V–5.5V supply range, and SMBus/I²C interface. It integrates series resistance cancellation, programmable N-factor correction, diode fault detection, and dual alert outputs for thermal monitoring in powertrain and ADAS ECUs.
For engineers reviewing the TMP411DQDGKRQ1 datasheet, TMP411DQDGKRQ1 pinout, TMP411DQDGKRQ1 application, or TMP411DQDGKRQ1 equivalent, this page delivers verified technical context, package-specific pin functions, real-world automotive use cases, and validated alternative options - all grounded in TI's SBOS527G production data sheet (September 2025 revision).
Technical Context
The TMP411DQDGKRQ1 implements a two-wire SMBus-compatible interface supporting write byte, read byte, send byte, and receive byte commands. It uses a dedicated analog front-end for remote diode sensing with programmable ideality factor (η = 1.008) and series resistance cancellation up to 3 kΩ.
It features dual open-drain digital outputs - THERM (fixed thermal flag) and ALERT/THERM2 (reconfigurable) - with programmable high/low thresholds and minimum/maximum temperature monitors. Conversion resolution is programmable from 9 to 12 bits for local sensing and fixed at 12 bits for remote sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Local Accuracy | ±0.8°C over –25°C to +85°C ambient; enables precise on-die thermal management without calibration |
| Remote Accuracy | ±0.8°C over –25°C to +85°C diode temperature; supports accurate junction monitoring of MCUs/FPGAs |
| Supply Range | 1.62V–5.5V; compatible with 1.8V, 3.3V, and 5V automotive domains including low-voltage microcontrollers |
| Interface | SMBus/I²C with 3.4 MHz max clock; supports standard system bus protocols and multi-drop configurations |
| Conversion Time | 17.7 ms (local only, one-shot); enables fast thermal response for safety-critical alerts |
| Average Current | 1.5 µA at 0.0625 Hz conversion rate; extends battery life in always-on vehicle modules |
| Package | SOT-23-8 (DDF), 2.9 mm × 2.8 mm × 1.1 mm; fits space-constrained ECU PCB layouts |
Pinout & Package
SOT-23-8 (DDF) package: compact 2.9 mm × 2.8 mm footprint with 1.1 mm max height, optimized for automotive under-hood and infotainment modules requiring minimal board area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | Accepts 1.62V–5.5V; powers internal circuitry and provides pull-up reference for open-drain pins |
| D+ | Remote sensor positive terminal | Connects to collector/anode of external diode-connected transistor; carries bias current for remote measurement |
| D− | Remote sensor negative terminal | Completes remote diode path; enables differential sensing to reject common-mode noise |
| THERM | Fixed thermal flag output | Active-low open-drain; asserts when local temp exceeds programmed threshold - requires external pull-up |
| GND | Ground reference | Analog and digital ground return; must be low-impedance for accurate remote sensing |
| ALERT/THERM2 | Reconfigurable alert output | Active-low open-drain; can be set as second thermal flag or general-purpose alert - requires external pull-up |
| SDA | Serial data line | Open-drain bidirectional I²C/SMBus data; requires external pull-up to V+ |
| SCL | Serial clock line | Open-drain I²C/SMBus clock input; synchronizes data transfers with master controller |
Key Features
| Feature | Design Value |
|---|---|
| Series resistance cancellation | Compensates for up to 3 kΩ trace resistance in remote diode paths, preserving ±0.8°C accuracy without layout constraints |
| Programmable N-factor correction | Adjusts ideality factor (η) to match specific transistor/diode characteristics, eliminating calibration across semiconductor process variations |
| Diode fault detection | Identifies open/short conditions on D+/D− lines and reports via status register - prevents false thermal shutdowns |
| Dual independent alert outputs | THERM (fixed) and ALERT/THERM2 (reconfigurable) enable layered thermal response: e.g., warning + hard shutdown |
| Wide remote measurement range | Supports diode temperatures from –55°C to +150°C, covering engine control, battery pack, and power electronics monitoring |
Applications
| Advanced Driver Assistance Systems (ADAS) | Body Electronics and Lighting |
|---|---|
Use Scenario: Monitoring temperature of radar SoC and image signal processor in 77-GHz ADAS domain controller. IC Role / Device Role / Timing Role: Local sensor tracks SoC die temperature; remote channel reads junction temp of external power FETs driving camera modules. Use Value: Enables dynamic throttling before thermal derating occurs, maintaining real-time object detection performance within AEC-Q100 Grade-1 limits. | Use Scenario: Thermal supervision of LED driver ICs in adaptive front lighting systems (AFS). IC Role / Device Role / Timing Role: Remote diode senses LED junction temp; local sensor monitors driver IC ambient; both feed closed-loop dimming algorithm. Use Value: Prevents LED color shift and lumen depreciation by limiting drive current when junction exceeds 120°C - directly enabled by ±0.8°C remote accuracy. |
| Infotainment Head Unit | Hybrid Powertrain Inverter |
Use Scenario: Real-time thermal guardbanding for application processor and DDR memory in digital cockpit display. IC Role / Device Role / Timing Role: Local sensor measures SoC temperature; remote channel monitors memory module via integrated diode. Use Value: Triggers display brightness reduction at 85°C and safe boot halt at 105°C - meeting ISO 26262 ASIL-B thermal safety requirements. | Use Scenario: Monitoring IGBT junction temperature in 400V traction inverter control board. IC Role / Device Role / Timing Role: Remote diode connected to IGBT emitter-collector; local sensor tracks gate driver ambient. Use Value: Supports predictive thermal derating during torque surge events, extending IGBT lifetime while maintaining ±0.8°C accuracy despite 3 kΩ PCB trace resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar remote/local temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP451-Q1 | WSON-8 (2 mm × 2 mm), 1.7V–3.6V supply, ±2°C local accuracy, no series resistance cancellation | Targeted at ultra-low-power infotainment subsystems where supply is strictly 1.8V/3.3V and board space is critical | Select when footprint is constrained and remote accuracy >±1°C is acceptable; not suitable for high-resistance remote traces |
| TMP421-Q1 | VSSOP-8 (3 mm × 4.9 mm), 2.7V–5.5V supply, ±1°C local/remote accuracy, same series resistance cancellation | Used in legacy ADAS designs where VSSOP-8 is already routed and ±1°C meets functional safety margin | Choose for drop-in replacement where existing layout uses VSSOP-8 and ±1°C accuracy suffices |
Compared with TMP451-Q1, TMP411DQDGKRQ1 offers tighter accuracy and robust series resistance compensation but requires wider supply range support; versus TMP421-Q1, it delivers superior ±0.8°C accuracy in smaller SOT-23-8 packaging at the cost of reduced voltage headroom below 1.62V.
Availability
TMP411DQDGKRQ1 is available at Aetrix Electronics and suitable for advanced driver assistance systems (ADAS), hybrid powertrain inverters, and infotainment head units requiring stable component supply across automotive production lifecycles.
Supply support for TMP411DQDGKRQ1 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 specializing in analog and embedded processing technologies, with deep expertise in automotive-grade signal conditioning and thermal management solutions.
The TMP411-Q1/TMP411D-Q1 product line was designed specifically for AEC-Q100 Grade-1 automotive applications requiring high-accuracy, fault-tolerant temperature monitoring in powertrain, ADAS, and body control modules.
FAQ
What is the maximum remote diode temperature range supported by the TMP411DQDGKRQ1?
The TMP411DQDGKRQ1 supports remote diode temperature measurements from –55°C to +150°C. This range is validated for diode-connected transistors and enables direct junction monitoring of power semiconductors such as IGBTs and MOSFETs in automotive inverters and DC-DC converters. The specification applies across the full operating ambient range of –40°C to +125°C.
Does the TMP411DQDGKRQ1 require external calibration for remote temperature accuracy?
No, the TMP411DQDGKRQ1 does not require external calibration to achieve ±0.8°C remote accuracy. Its integrated series resistance cancellation and programmable N-factor correction compensate for PCB trace resistance and transistor non-ideality, enabling factory-trimmed accuracy across multiple IC manufacturers' diodes without user calibration.
How does the ALERT/THERM2 pin function in the TMP411DQDGKRQ1?
The ALERT/THERM2 pin on the TMP411DQDGKRQ1 is a reconfigurable open-drain output that can operate either as a second thermal flag (THERM2) or as a general-purpose alert. Its behavior is controlled via configuration register bits, allowing independent high/low threshold programming distinct from the fixed THERM output - enabling dual-level thermal response strategies in safety-critical systems.
What is the typical quiescent current of the TMP411DQDGKRQ1 at 0.0625 Hz conversion rate?
The typical quiescent current of the TMP411DQDGKRQ1 at 0.0625 Hz conversion rate is 1.5 µA when powered from 3.3V. This ultra-low active current enables continuous thermal monitoring in always-on vehicle modules such as telematics control units (TCUs) and gateway ECUs without compromising battery standby life.
Which package type is used by the TMP411DQDGKRQ1, and what are its dimensions?
The TMP411DQDGKRQ1 uses the SOT-23-8 (TI package designator DDF) package, measuring 2.9 mm × 2.8 mm × 1.1 mm (max height). This compact footprint supports high-density automotive PCB layouts in space-constrained modules like radar sensors and LED drivers, while maintaining compatibility with standard SMT assembly processes.
TMP411DQDGKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Digital, Local/Remote
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -64°C ~ 191°C
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 11 b
- Features:
- One-Shot, Output Switch, Programmable Limit, Programmable Resolution, Shutdown Mode
- Accuracy - Highest (Lowest):
- ±2.5°C
- Test Condition:
- -40°C ~ 125°C
- Operating Temperature:
- -55°C ~ 127°C
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 8-VSSOP
TMP411DQDGKRQ1 FAQ
1.How can I place an order for TMP411DQDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP411DQDGKRQ1 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 TMP411DQDGKRQ1 reliable?
The price and inventory of TMP411DQDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP411DQDGKRQ1 is usually 5 days.
3.What payment methods are accepted for TMP411DQDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP411DQDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP411DQDGKRQ1?
TMP411DQDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP411DQDGKRQ1 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 TMP411DQDGKRQ1?
For technical support, including TMP411DQDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP411DQDGKRQ1 requirements.
6.How does Aetrix verify that TMP411DQDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All TMP411DQDGKRQ1 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 TMP411DQDGKRQ1 meets industry standards.
7.What is the process for return or replacement of TMP411DQDGKRQ1?
All TMP411DQDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TMP411DQDGKRQ1, 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 TMP411DQDGKRQ1 part is unused and in its original packaging.
Return procedure for TMP411DQDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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