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Texas Instruments TMP302DQDRLRQ1
- Part No.:
- TMP302DQDRLRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Thermostats - Solid State
- Package:
- SOT-563, SOT-666
- Datasheet:
-
TMP302DQDRLRQ1.pdf
- Description:
- THERMOSTAT ACT LO OPN DRN SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
TMP302DQDRLRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive temperature switch in SOT563 package, delivering ±0.2°C typical trip accuracy from 40°C to 125°C, 15 μA max quiescent current, and pin-selectable 110–125°C trip points for thermal overtemperature protection in engine control units.
For engineers reviewing the TMP302DQDRLRQ1 datasheet, TMP302DQDRLRQ1 pinout, TMP302DQDRLRQ1 application, or TMP302DQDRLRQ1 equivalent, this page provides verified trip-point configuration logic, hysteresis selection behavior, open-drain output timing, supply voltage range compliance (1.4–3.6 V), and automotive-grade thermal reliability data per AEC-Q100.
Technical Context
The TMP302DQDRLRQ1 implements a fully self-contained analog temperature sensing core with comparator-based switching logic-no external components or microcontroller interaction required. Its trip threshold is set by binary encoding across TRIPSET0 and TRIPSET1 pins, supporting four discrete settings (110°C, 115°C, 120°C, 125°C) within the TMP302D-Q1 variant family.
Hysteresis is digitally selected via HYSTSET pin (GND = 5°C, VS = 10°C), ensuring stable output transitions without oscillation near threshold. The open-drain, active-low OUT pin interfaces directly with 1.4–3.6 V logic systems using a pullup resistor, with VOL ≤ 0.4 V at IOL = 3 mA and VS > 2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 3.6 V - Enables direct integration into low-voltage automotive domains (e.g., body control modules, infotainment power rails). |
| Quiescent Current | 8–15 μA - Supports always-on thermal monitoring in battery-sensitive applications without measurable drain impact. |
| Tripping Accuracy | ±0.2°C (typical) from 40°C to 125°C - Ensures precise overtemperature detection critical for engine coolant or powertrain thermal safety margins. |
| Selectable Trip Points | 110°C, 115°C, 120°C, 125°C - Configured via TRIPSET0/TRIPSET1 pin logic; eliminates need for external calibration or firmware tuning. |
| Hysteresis Options | 5°C (HYSTSET = GND) or 10°C (HYSTSET = VS) - Prevents chatter during slow thermal transients in HVAC or ECU environments. |
| Output Type | Open-drain, active-low - Allows wired-OR fault signaling across multiple sensors and compatibility with 1.8/3.3 V host logic. |
| Ambient Temp Range | –40°C to +125°C - Validated for under-hood and transmission control module mounting locations per AEC-Q100 Grade 1. |
Pinout & Package
SOT563 (DRL) package: 1.6 mm × 1.6 mm × 0.6 mm footprint with 6-pin layout optimized for high-density automotive PCBs and automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - TRIPSET0 | Digital input | LSB of trip-point selection; combined with TRIPSET1 to configure 110/115/120/125°C thresholds. |
| 2 - GND | Ground reference | Primary return path for internal bias and sensor core; must be low-impedance for accuracy stability. |
| 3 - OUT | Digital output | Open-drain, active-low alert signal; requires external pullup to VS (10–100 kΩ) for system-level fault indication. |
| 4 - HYSTSET | Digital input | Selects hysteresis window: GND = 5°C, VS = 10°C - determines temperature delta before output reassertion after trip. |
| 5 - VS | Power supply | Single 1.4–3.6 V rail powers entire device; bypass capacitor (0.1 µF) required adjacent to pin for noise immunity. |
| 6 - TRIPSET1 | Digital input | MSB of trip-point selection; defines upper two bits of 4-state trip configuration matrix with TRIPSET0. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient), HBM ±2 kV, CDM ±1 kV - certified for safety-critical vehicle subsystems. |
| No external components required | Operates standalone with only VS bypass cap and OUT pullup - reduces BOM count and layout complexity in space-constrained ECUs. |
| Pin-selectable hysteresis | 5°C or 10°C via single HYSTSET connection - eliminates need for external resistors or firmware configuration for transient stability. |
| Low-voltage compatibility | Functional down to 1.4 V supply - supports integration into 1.8 V logic domains and low-power wake-up circuits. |
| Micro-package footprint | SOT563 (1.6 mm × 1.6 mm) - enables placement near heat sources (e.g., MOSFETs, transformers) without board area penalty. |
Applications
| Engine Control Unit (ECU) | Infotainment System |
|---|---|
Use Scenario: Monitoring IGBT junction temperature in real-time during high-load engine operation. IC Role / Device Role / Timing Role: Standalone overtemperature cutoff trigger that asserts active-low signal to disable power stage before thermal runaway. Use Value: Prevents irreversible damage to power electronics by reacting within milliseconds of exceeding 125°C, with no software latency or MCU dependency. |
Use Scenario: Detecting overheating in display backlight drivers or processor VRMs during extended summer operation. IC Role / Device Role / Timing Role: Hardware-level thermal watchdog providing immediate fault flag to system PMIC or SoC thermal management unit. Use Value: Enables automatic display dimming or safe shutdown before touchscreen touch sensitivity degrades or plastic housing warps. |
| Climate Control Module | Automotive Black Box |
Use Scenario: Protecting blower motor driver ICs from coil overheating due to blocked air ducts or fan failure. IC Role / Device Role / Timing Role: Direct thermal switch interfacing with motor gate driver enable line via open-drain output. Use Value: Delivers deterministic 5°C hysteresis response to prevent cycling on/off during slow ambient rise, extending motor lifespan. |
Use Scenario: Safeguarding NAND flash memory and video encoder ICs in dashcam recording units exposed to parked-car cabin temperatures. IC Role / Device Role / Timing Role: Independent thermal monitor asserting fault to microSD card controller when enclosure exceeds 110°C. Use Value: Preserves recorded video integrity by halting writes before NAND endurance drops sharply above 105°C junction temp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM75BIMM/NOPB | I²C interface, 9-bit resolution, ±2°C accuracy, 1.7–5.5 V supply - requires MCU polling and firmware handling. | Used where digital temperature logging or multi-sensor networks are needed, not simple hardware trip alerts. | Choose LM75BIMM/NOPB only if system already uses I²C bus and needs readback capability; TMP302DQDRLRQ1 is superior for dedicated overtemp cutoff. |
| MAX6513UKP+T | Fixed 125°C trip point, SOT23-5 package, ±1°C accuracy, 2.7–5.5 V supply - no pin-selectable hysteresis or trip variants. | Suitable for cost-sensitive non-automotive applications where fixed threshold suffices and AEC-Q100 is unnecessary. | Use MAX6513UKP+T only in industrial or consumer designs lacking automotive qualification requirements; TMP302DQDRLRQ1 offers broader trip flexibility and Grade 1 compliance. |
Compared with LM75BIMM/NOPB and MAX6513UKP+T, TMP302DQDRLRQ1 delivers automotive-grade reliability, pin-configurable trip/hysteresis, ultra-low power, and true hardware autonomy-making it optimal for safety-critical thermal cutoff where MCU involvement introduces latency or failure risk.
Availability
TMP302DQDRLRQ1 is available at Aetrix Electronics and suitable for engine control units, infotainment thermal protection, and climate control modules requiring stable component supply across automotive production lifecycles.
Supply support for TMP302DQDRLRQ1 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-grade precision analog solutions.
The TMP302-Q1 product line was designed specifically for automotive thermal safety applications-delivering robust, low-power, pin-programmable temperature switches that meet AEC-Q100 Grade 1 requirements without MCU dependency.
FAQ
What is the exact trip-point range supported by TMP302DQDRLRQ1?
The TMP302DQDRLRQ1 supports four discrete trip points: 110°C, 115°C, 120°C, and 125°C. These are selected exclusively via the binary combination of TRIPSET0 and TRIPSET1 pins (GND/VS logic levels) as defined in Table 1 of the TMP302-Q1 datasheet. No other trip temperatures are valid for this specific variant.
Does TMP302DQDRLRQ1 require a microcontroller to operate?
No, TMP302DQDRLRQ1 operates autonomously without any microcontroller. It functions as a self-contained analog temperature switch: internal sensing, comparison, and open-drain output assertion occur entirely on-die. Only a supply rail (1.4–3.6 V), bypass capacitor, and pullup resistor are required for full operation.
How is hysteresis configured on TMP302DQDRLRQ1?
Hysteresis on TMP302DQDRLRQ1 is set by the HYSTSET pin: connecting it to GND selects 5°C hysteresis, while connecting it to VS selects 10°C hysteresis. This configuration is static and must be established at power-up; dynamic reconfiguration is not supported during operation.
What is the maximum allowable supply voltage for TMP302DQDRLRQ1?
The absolute maximum supply voltage for TMP302DQDRLRQ1 is 4 V, but the recommended operating range remains 1.4 V to 3.6 V per the datasheet's Recommended Operating Conditions table. Operation above 3.6 V may compromise long-term reliability and is outside AEC-Q100 validation scope.
Is TMP302DQDRLRQ1 compatible with lead-free reflow processes?
Yes, TMP302DQDRLRQ1 is RoHS-compliant with NIPDAUAG lead finish and rated MSL Level-2-260°C-1 YEAR, making it fully compatible with standard lead-free reflow profiles. Peak reflow temperature must not exceed 260°C, and moisture sensitivity handling per J-STD-020 is required prior to soldering.
TMP302DQDRLRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Trip Temperature Threshold:
- Hot
- Switching Temperature:
- 110°C, 115°C, 120°C, 125°C
- Accuracy:
- ±2°C
- Current - Output (Max):
- 10mA
- Output Type:
- Open Drain
- Output:
- Active Low
- Output Function:
- /OverTemp
- Selectable Hysteresis:
- Yes
- Features:
- Selectable Trip Point
- Voltage - Supply:
- 1.4 V ~ 3.6 V
- Current - Supply:
- 8µA
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- SOT-5X3
TMP302DQDRLRQ1 FAQ
1.How can I place an order for TMP302DQDRLRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP302DQDRLRQ1 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 TMP302DQDRLRQ1 reliable?
The price and inventory of TMP302DQDRLRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP302DQDRLRQ1 is usually 5 days.
3.What payment methods are accepted for TMP302DQDRLRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP302DQDRLRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP302DQDRLRQ1?
TMP302DQDRLRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP302DQDRLRQ1 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 TMP302DQDRLRQ1?
For technical support, including TMP302DQDRLRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP302DQDRLRQ1 requirements.
6.How does Aetrix verify that TMP302DQDRLRQ1 is sourced from the original manufacturer or authorized distributors?
All TMP302DQDRLRQ1 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 TMP302DQDRLRQ1 meets industry standards.
7.What is the process for return or replacement of TMP302DQDRLRQ1?
All TMP302DQDRLRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TMP302DQDRLRQ1, 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 TMP302DQDRLRQ1 part is unused and in its original packaging.
Return procedure for TMP302DQDRLRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TMP302DQDRLRQ1 Tags
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