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Texas Instruments TMP75BQDGKRQ1
- Part No.:
- TMP75BQDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TMP75BQDGKRQ1.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
TMP75BQDGKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 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 TMP75BQDGKRQ1 datasheet, TMP75BQDGKRQ1 pinout, TMP75BQDGKRQ1 application, or TMP75BQDGKRQ1 equivalent, key selection criteria include SMBus/two-wire interface compatibility, programmable ALERT threshold, tri-temp tested variants, shutdown current of 0.3μA (typ), and VSSOP-8 package suitability for space-constrained automotive PCBs.
Technical Context
The TMP75BQDGKRQ1 integrates a bipolar junction transistor (BJT) in band-gap configuration for on-die temperature sensing, digitized by a 12-bit ADC with left-justified output format. It supports standard/fast-mode (up to 400 kHz) and high-speed mode (up to 3 MHz) two-wire communication with integrated Schmitt triggers and spike suppression on SDA/SCL.
It implements dual-alert functionality via the open-drain ALERT pin - configurable as comparator (hysteresis-based) or interrupt mode - with fault counter and polarity control (POL bit). Addressing uses three hardware-selectable pins (A0–A2), enabling up to eight devices on one bus.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.4V to 3.6V - enables direct interface with 1.8V/2.5V/3.3V automotive microcontrollers without level-shifting. |
| Accuracy | ±1°C (–40°C to 125°C) - sufficient for thermal throttling and battery pack temperature monitoring per ISO 26262 ASIL-B system requirements. |
| Resolution | 0.0625°C (12-bit) - supports fine-grained thermal compensation of power MOSFETs or camera modules. |
| Quiescent Current | 45μA (typ) active / 0.3μA (typ) shutdown - extends battery life in always-on telematics gateways. |
| Conversion Time | 20–35ms (one-shot) - balances responsiveness and power in periodic thermal polling loops. |
| Interface | SMBus/two-wire compatible - interoperates with TI C2000™, NXP S32K, and Infineon AURIX™ host controllers using standard I²C drivers. |
| Operating Temp | –40°C to 125°C - qualified for under-hood and infotainment module placement without external thermal derating. |
Pinout & Package
DGK package: 8-pin VSSOP, 3mm × 4.9mm body, 0.65mm pitch, exposed pad optional - optimized for thermal conduction and high-density automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VS (Pin 8) | Power supply input | Accepts 1.4V–3.6V; internal regulator enables stable core operation across wide automotive rail variation. |
| GND (Pin 4) | Ground reference | Primary thermal path to PCB; low-inductance connection critical for accurate local die temperature measurement. |
| SDA (Pin 1) | Serial data I/O | Open-drain, requires external pullup; supports multi-master arbitration and SMBus alert response protocol. |
| SCL (Pin 2) | Serial clock input | Accepts 1kHz–3MHz; integrated Schmitt trigger rejects noise in electrically noisy vehicle environments. |
| ALERT (Pin 3) | Overtemperature indicator | Open-drain output; drives MCU interrupt or hardware throttle signal without software polling overhead. |
| A0, A1, A2 (Pins 7,6,5) | Address select inputs | Hardwired to GND/VS to configure one of eight unique I²C addresses - eliminates address conflicts in multi-sensor clusters. |
Key Features
| Feature | Design Value |
|---|---|
| Functional Safety-Capable | Documentation provided for ISO 26262 ASIL-B integration - enables use in safety-critical thermal monitoring without full FMEDA rework. |
| Tri-Temp Tested Option | TMP75BTQDGKRQ1 variant undergoes production test at –40°C, 25°C, and 125°C - improves early-life failure detection in safety-relevant applications. |
| Programmable ALERT Thresholds | TLOW/THIGH registers allow dynamic hysteresis setting - eliminates external comparators in thermostat-style battery cell monitoring. |
| One-Shot Conversion Mode | Initiated via register write; stops conversion after single reading - reduces self-heating error during infrequent thermal checks. |
| Shutdown Mode | 0.3μA standby current - meets ULP requirements for parked-vehicle battery drain budgets in connected car platforms. |
Applications
| ADAS Domain Controller | Onboard Charger |
|---|---|
Use Scenario: Real-time junction temperature monitoring of power semiconductors during sensor fusion processing. IC Role / Device Role / Timing Role: Local die temperature sensor feeding thermal feedback to MCU for dynamic frequency scaling and fault mitigation. Use Value: Prevents thermal runaway by triggering throttling at 115°C with ±1°C accuracy, avoiding costly hardware resets. | Use Scenario: Monitoring IGBT/module temperature during high-power AC/DC conversion cycles. IC Role / Device Role / Timing Role: Standalone overtemperature alarm with hysteresis, directly asserting hardware shutdown signal via ALERT pin. Use Value: Enables <100ms thermal fault response without CPU intervention - meets IEC 61851-23 thermal safety timing constraints. |
| Body Control Module | Battery Management System |
Use Scenario: Cabin ambient temperature sensing for HVAC actuator control in distributed ECU architecture. IC Role / Device Role / Timing Role: SMBus slave device reporting temperature every 500ms via polled read; shares bus with door lock and lighting ICs. Use Value: Eight configurable addresses allow co-location with other TI sensors on same bus - reduces wiring harness complexity and BOM count. | Use Scenario: Cell-level temperature acquisition in 12S Li-ion traction battery packs with isolated CAN communication. IC Role / Device Role / Timing Role: Local analog-to-digital converter with digital output - replaces thermistor + ADC discrete solution, eliminating calibration drift. Use Value: Factory-calibrated ±1°C accuracy eliminates per-unit thermistor characterization, cutting production test time by 18 seconds/unit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM75BIDR | Non-automotive grade; no AEC-Q100 qualification; ±2°C accuracy over –25°C to 100°C. | Limited to cabin interior modules where extended temp range and functional safety not required. | Select only for cost-sensitive non-safety applications with relaxed accuracy and qualification needs. |
| TMP117MRTJT | Higher accuracy (±0.1°C typ), 16-bit resolution, but 1.71V–3.6V supply and no ALERT pin - requires software polling. | Suitable for precision battery calibration labs, not real-time automotive thermal protection. | Choose when metrology-grade accuracy outweighs need for hardware interrupt capability and AEC-Q100 compliance. |
Compared with LM75BIDR, TMP75BQDGKRQ1 delivers automotive qualification and tighter accuracy for safety-critical thermal management; versus TMP117MRTJT, it trades resolution for integrated ALERT functionality and lower system-level latency in fault response.
Availability
TMP75BQDGKRQ1 is available at Aetrix Electronics and suitable for ADAS domain controllers, onboard chargers, and battery management systems requiring stable component supply across automotive production lifecycles.
Supply support for TMP75BQDGKRQ1 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for automotive, industrial, and personal electronics markets.
The TMP75B-Q1 product line targets automotive thermal management with AEC-Q100 Grade 1 qualification, functional safety documentation, and robust two-wire interface design for harsh-vehicle environments.
FAQ
What is the operating temperature range of the TMP75BQDGKRQ1?
The TMP75BQDGKRQ1 operates from –40°C to 125°C, fully meeting AEC-Q100 Grade 1 requirements. This range is validated across the entire VSSOP-8 package and supports placement near power stages in ADAS ECUs and battery modules. The sensor's on-die BJT-based sensing element ensures stable performance without external calibration across this span, and its ±1°C accuracy specification applies uniformly across the full range - critical for thermal shutdown decisions in safety-critical automotive systems.
Does the TMP75BQDGKRQ1 support SMBus alert response?
Yes, the TMP75BQDGKRQ1 supports SMBus alert response when configured in interrupt mode (TM = 1). In this mode, the ALERT pin acts as an SMBus alert signal; upon activation, the device responds to the SMBus alert command (00011001) by returning its target address on the SDA line. The LSB of that address indicates whether THIGH (high) or TLOW (low) triggered the alert. This feature enables multi-device arbitration on shared buses - essential for scalable thermal monitoring in domain controllers where multiple TMP75BQDGKRQ1 units may be deployed.
What is the significance of the "Q1" suffix in TMP75BQDGKRQ1?
The "Q1" suffix in TMP75BQDGKRQ1 denotes AEC-Q100 qualification for automotive applications. Specifically, it confirms Grade 1 temperature rating (–40°C to 125°C), HBM ESD classification 2, and CDM ESD classification C4B - all verified per AEC-Q100-002 and AEC-Q100-011 standards. This qualification ensures the TMP75BQDGKRQ1 meets reliability and stress-test requirements for deployment in engine compartments, battery systems, and ADAS modules, distinguishing it from commercial-grade variants like TMP75BDGKR.
Can the TMP75BQDGKRQ1 operate from a 1.8V supply?
Yes, the TMP75BQDGKRQ1 is explicitly designed for 1.8V operation - its recommended supply range is 1.4V to 3.6V, with nominal 1.8V specified in datasheet conditions. At 1.8V, typical quiescent current is 45μA, conversion time is 20–35ms (one-shot), and timing parameters meet fast-mode I²C specifications (up to 400 kHz). This makes the TMP75BQDGKRQ1 ideal for modern automotive MCUs and PMICs that use 1.8V I/O rails, eliminating the need for voltage translation circuitry.
How many devices can share the same two-wire bus with TMP75BQDGKRQ1?
Up to eight TMP75BQDGKRQ1 devices can share the same two-wire bus, enabled by three hardware-programmable address pins (A0, A1, A2). Each pin accepts GND or VS to set a binary value, yielding eight unique 7-bit addresses (1001000 to 1001111). The device latches these pin states at the start of communication, ensuring deterministic addressing without software configuration - a key advantage in distributed automotive sensor networks where layout-driven address assignment simplifies system integration and avoids firmware dependencies.
TMP75BQDGKRQ1 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
- 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
TMP75BQDGKRQ1 FAQ
1.How can I place an order for TMP75BQDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP75BQDGKRQ1 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 TMP75BQDGKRQ1 reliable?
The price and inventory of TMP75BQDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP75BQDGKRQ1 is usually 5 days.
3.What payment methods are accepted for TMP75BQDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP75BQDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP75BQDGKRQ1?
TMP75BQDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP75BQDGKRQ1 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 TMP75BQDGKRQ1?
For technical support, including TMP75BQDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP75BQDGKRQ1 requirements.
6.How does Aetrix verify that TMP75BQDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All TMP75BQDGKRQ1 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 TMP75BQDGKRQ1 meets industry standards.
7.What is the process for return or replacement of TMP75BQDGKRQ1?
All TMP75BQDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TMP75BQDGKRQ1, 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 TMP75BQDGKRQ1 part is unused and in its original packaging.
Return procedure for TMP75BQDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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