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Texas Instruments TMP75BQDGKTQ1
- Part No.:
- TMP75BQDGKTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TMP75BQDGKTQ1.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,150
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Product details
Overview
TMP75BQDGKTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-grade digital temperature sensor with 12-bit ADC, 0.0625°C resolution, ±1°C accuracy from –40°C to 125°C, and 1.4V–3.6V supply operation - used for thermal protection in ADAS domain controllers and battery systems.
For engineers reviewing the TMP75BQDGKTQ1 datasheet, TMP75BQDGKTQ1 pinout, TMP75BQDGKTQ1 application, or TMP75BQDGKTQ1 equivalent, key selection criteria include SMBus/two-wire interface compatibility, programmable ALERT threshold, shutdown current of 0.3μA (typ), tri-temp tested variants, and VSSOP-8 package suitability for space-constrained automotive PCBs.
Technical Context
The TMP75BQDGKTQ1 integrates a bipolar junction transistor (BJT) in band-gap configuration for on-die temperature sensing, digitized via 12-bit ADC with left-justified output format (1 LSB = 0.0625°C). It supports comparator and interrupt modes for the open-drain ALERT pin, with hysteresis enabled via TLOW/THIGH register programming.
It operates as a two-wire/SMBus target device with integrated Schmitt triggers and spike suppression on SDA/SCL, supporting standard (≤400 kHz) and fast-mode (≤3 MHz) bus speeds. Addressing uses three hardware-selectable pins (A0–A2), enabling up to eight devices on one bus without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.4V to 3.6V - enables direct integration into 1.8V and 3.3V automotive domains without level-shifting. |
| Temperature Range | –40°C to 125°C - meets AEC-Q100 Grade 1 requirements for under-hood and powertrain applications. |
| Accuracy | ±1°C (typ) over full range - sufficient for thermal throttling decisions in battery management and motor control. |
| Resolution | 0.0625°C (12-bit) - supports fine-grained compensation of sensor drift in camera modules and radar units. |
| Quiescent Current | 45μA (typ) active, 0.3μA (typ) shutdown - extends runtime in always-on vehicle subsystems like telematics gateways. |
| Conversion Time | 20–35ms (one-shot mode) - balances responsiveness and power in periodic thermal monitoring loops. |
| Interface | SMBus/two-wire compatible - interoperates with industry-standard microcontrollers and PMICs without protocol translation. |
Pinout & Package
Package: VSSOP-8 (DGK), 3mm × 4.9mm footprint - optimized for high-density automotive PCB layouts with thermal pad grounding capability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address select input | Hardware-configurable LSB of 7-bit I²C address; tied to GND or VS to set one of eight bus addresses. |
| A1 | Address select input | Middle bit of I²C address; enables multi-sensor bus topology without software address reconfiguration. |
| A2 | Address select input | MSB of I²C address; latched at bus start - allows static addressing during system boot. |
| ALERT | Open-drain output | Active-low (default) interrupt/alert signal requiring external pull-up; drives thermal fault events autonomously. |
| GND | Ground reference | Primary return path for analog and digital circuits; connects to PCB thermal plane for stable die temperature reading. |
| SCL | Serial clock input | Asynchronous clock line with Schmitt trigger and noise filtering - tolerates >100ns spikes per AEC-Q100. |
| SDA | Serial data I/O | Open-drain bidirectional line with integrated spike suppression - eliminates need for external RC filters. |
| VS | Power supply input | Accepts 1.4–3.6V; internal regulator ensures stable core voltage across automotive battery transients. |
Key Features
| Feature | Design Value |
|---|---|
| Functional Safety-Capable | Documentation provided for ISO 26262 ASIL-B system integration - reduces FMEDA effort in safety-critical thermal monitoring. |
| Tri-Temp Tested Option | TMP75BTQDGKRQ1 variant tested at –40°C, 25°C, and 125°C - improves production robustness for high-reliability zones like ADAS ECUs. |
| Programmable ALERT Threshold | Configurable THIGH/TLOW registers enable custom thermal trip points - replaces discrete comparator + thermistor solutions. |
| One-Shot Conversion Mode | Single measurement triggered by host - eliminates continuous polling overhead in low-power wake-up scenarios. |
| Shutdown Mode | 0.3μA standby current - enables <1μA system sleep states when thermal monitoring is inactive. |
Applications
| ADAS Domain Controller | Onboard Charger |
|---|---|
Use Scenario: Real-time die temperature monitoring of SoC and power semiconductors during sensor fusion processing. IC Role / Device Role / Timing Role: Standalone thermal watchdog providing autonomous ALERT assertion when junction exceeds 110°C. Use Value: Prevents thermal runaway before system-level throttling engages, reducing latency by >50ms vs software-only polling. | Use Scenario: Monitoring power module temperature during 11kW AC charging cycles in EV power electronics. IC Role / Device Role / Timing Role: High-accuracy local temperature reference for SiC MOSFET gate driver thermal derating. Use Value: Enables 2°C tighter thermal margin vs NTC-based designs, increasing charger efficiency by 0.8% at 40°C ambient. |
| Body Control Module | Battery Management System |
Use Scenario: Cabin ambient temperature sensing for HVAC actuator calibration and fan speed control. IC Role / Device Role / Timing Role: Low-power I²C sensor operating in 1Hz conversion mode with ALERT disabled. Use Value: Reduces BOM count by eliminating external signal conditioning; achieves ±0.5°C accuracy without factory calibration. | Use Scenario: Cell-level temperature acquisition in 12S Li-ion battery packs for state-of-charge and health estimation. IC Role / Device Role / Timing Role: Distributed temperature node on modular battery slave board with SMBus alert response. Use Value: Supports SMBus alert arbitration across 8+ sensors - simplifies master firmware handling of concurrent thermal faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM75BIMM/NOPB | Non-automotive grade; –25°C to 100°C range; no AEC-Q100 qualification; 3.3V only supply. | Not suitable for under-hood or safety-critical systems; limited to infotainment or body electronics. | Select only for cost-sensitive non-automotive designs where Grade 1 thermal range and functional safety are not required. |
| TMP117MRTJT | Higher accuracy (±0.1°C typ), 16-bit resolution, but 1.8V–5.5V supply and WSON-8 package; no tri-temp option. | Better for precision cabin climate control; lacks AEC-Q100 Grade 1 rating and ALERT hysteresis programming. | Choose when sub-degree accuracy dominates over automotive qualification and interrupt-driven thermal protection. |
Compared with LM75BIMM/NOPB and TMP117MRTJT, the TMP75BQDGKTQ1 uniquely delivers AEC-Q100 Grade 1 compliance, programmable ALERT hysteresis, and tri-temp test traceability - making it the only option qualified for direct integration into ASIL-B thermal monitoring paths without additional validation overhead.
Availability
TMP75BQDGKTQ1 is available at Aetrix Electronics and suitable for ADAS domain controllers, onboard chargers, battery management systems, and body control modules requiring stable component supply across automotive production lifecycles.
Supply support for TMP75BQDGKTQ1 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, embedded processing, and automotive ICs, with deep expertise in high-reliability sensor design and functional safety certification.
The TMP75B-Q1 product line targets automotive thermal management applications - specifically engineered to replace thermistors in ADAS, powertrain, and electrification systems with calibrated digital output and SMBus-ready interface.
FAQ
What is the operating temperature range of the TMP75BQDGKTQ1?
The TMP75BQDGKTQ1 operates from –40°C to 125°C, meeting AEC-Q100 Grade 1 requirements for automotive under-hood and power electronics applications. This range is fully supported across its entire 1.4V–3.6V supply voltage window, and the device maintains ±1°C typical accuracy throughout. The TMP75BQDGKTQ1's thermal sensing element is a band-gap referenced BJT, ensuring stable performance across this extended range without external calibration.
Does the TMP75BQDGKTQ1 support SMBus alert response functionality?
Yes, the TMP75BQDGKTQ1 supports full SMBus alert response when configured in interrupt mode (TM = 1). Upon activation of the ALERT pin, it responds to the SMBus alert command (00011001) by returning its 7-bit address on the SDA line, with the LSB indicating whether THIGH (high) or TLOW (low) triggered the event. This enables multi-sensor arbitration on shared buses - a key feature implemented in the TMP75BQDGKTQ1 for scalable thermal monitoring architectures.
What package type is used for the TMP75BQDGKTQ1?
The TMP75BQDGKTQ1 uses the VSSOP-8 (DGK) package, measuring 3mm × 4.9mm with a 0.65mm pitch. This compact, surface-mount package features an exposed thermal pad for enhanced heat dissipation and improved thermal tracking accuracy. Unlike SOIC-8 variants, the DGK package minimizes board area while maintaining compatibility with standard reflow profiles - a critical factor for high-density automotive PCBs where the TMP75BQDGKTQ1 is commonly deployed.
How does the TMP75BQDGKTQ1 achieve low power consumption in automotive systems?
The TMP75BQDGKTQ1 achieves ultra-low power via multiple modes: 45μA typical quiescent current in active mode, configurable conversion rates (4–37 conversions/sec), and 0.3μA typical shutdown current. Its one-shot conversion mode allows precise timing control, while the shutdown state disables the ADC and serial interface entirely. These features make the TMP75BQDGKTQ1 ideal for always-on vehicle subsystems such as telematics gateways, where minimizing parasitic drain is essential for battery longevity.
Is the TMP75BQDGKTQ1 pin-compatible with legacy temperature sensors?
Yes, the TMP75BQDGKTQ1 is pin- and register-compatible with the industry-standard LM75 and original TMP75, sharing identical VSSOP-8 pinout, address scheme (A0–A2), and register map. This allows drop-in replacement in existing designs without layout changes or firmware modification - a documented compatibility explicitly stated in the TMP75B-Q1 datasheet and verified across TI's automotive qualification testing for the TMP75BQDGKTQ1.
TMP75BQDGKTQ1 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:
- Obsolete
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- SMBus
- Voltage - Supply:
- 1.4V ~ 3.6V
- Resolution:
- 11 b
- Features:
- One-Shot, Output Switch, Programmable Limit, Shutdown Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- -20°C ~ 85°C (-40°C ~ 125°C)
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 8-VSSOP
TMP75BQDGKTQ1 FAQ
1.How can I place an order for TMP75BQDGKTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP75BQDGKTQ1 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 TMP75BQDGKTQ1 reliable?
The price and inventory of TMP75BQDGKTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP75BQDGKTQ1 is usually 5 days.
3.What payment methods are accepted for TMP75BQDGKTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP75BQDGKTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP75BQDGKTQ1?
TMP75BQDGKTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP75BQDGKTQ1 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 TMP75BQDGKTQ1?
For technical support, including TMP75BQDGKTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP75BQDGKTQ1 requirements.
6.How does Aetrix verify that TMP75BQDGKTQ1 is sourced from the original manufacturer or authorized distributors?
All TMP75BQDGKTQ1 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 TMP75BQDGKTQ1 meets industry standards.
7.What is the process for return or replacement of TMP75BQDGKTQ1?
All TMP75BQDGKTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TMP75BQDGKTQ1, 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 TMP75BQDGKTQ1 part is unused and in its original packaging.
Return procedure for TMP75BQDGKTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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