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Texas Instruments TMP302AQDRLRQ1
- Part No.:
- TMP302AQDRLRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Thermostats - Solid State
- Package:
- SOT-563, SOT-666
- Datasheet:
-
TMP302AQDRLRQ1.pdf
- Description:
- THERMOSTAT ACT LOW OPEN DRN 6SOT
- Quantity:
- Payment:
- Shipping:
Inventory:2,510
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Product details
Overview
TMP302AQDRLRQ1 from Texas Instruments is an automotive-grade 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 50°C/55°C/60°C/65°C trip points. It functions as a standalone overtemperature alert device in engine control units and infotainment thermal protection circuits.
For engineers reviewing the TMP302AQDRLRQ1 datasheet, TMP302AQDRLRQ1 pinout, TMP302AQDRLRQ1 application, or TMP302AQDRLRQ1 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification (–40°C to 125°C), open-drain active-low output, 1.4 V to 3.6 V supply range, and programmable 5°C/10°C hysteresis via HYSTSET pin.
Technical Context
The TMP302AQDRLRQ1 integrates a precision bandgap temperature sensor, comparator, and digital input decoding logic for trip point selection (TRIPSET0/TRIPSET1) and hysteresis configuration (HYSTSET). Its functional mode requires no external components beyond a 0.1-μF bypass capacitor and pullup resistor on the open-drain OUT pin.
It operates as a self-contained thermal monitor with no microcontroller dependency: trip threshold is set by static logic levels on TRIPSET pins, hysteresis is selected via HYSTSET, and output state transitions occur autonomously based on die temperature crossing the configured threshold ± hysteresis window.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Trip Point | 50°C, 55°C, 60°C, or 65°C - selected by TRIPSET0/TRIPSET1 logic combinations per Table 1 |
| Trip Accuracy | ±0.2°C (typical) from 40°C to 125°C - enables precise thermal shutdown without calibration |
| Quiescent Current | 8–15 μA - supports always-on battery-powered automotive monitoring with minimal drain |
| Supply Voltage | 1.4 V to 3.6 V - compatible with 1.8 V and 3.3 V automotive domains and low-voltage MCUs |
| Hysteresis | 5°C (HYSTSET = GND) or 10°C (HYSTSET = VS) - prevents output oscillation near trip point |
| Output Type | Open-drain, active-low - allows wired-OR configuration and flexible pullup to any compatible rail |
| ESD Rating | HBM ±2000 V, CDM ±1000 V - meets AEC-Q100 requirements for harsh automotive environments |
Pinout & Package
SOT563 (DRL) package: 1.6 mm × 1.6 mm × 0.6 mm footprint, 6-pin surface-mount, moisture sensitivity level 2 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - TRIPSET0 | Digital input | LSB of trip point selection; combined with TRIPSET1 to configure 50°C/55°C/60°C/65°C thresholds |
| 2 - GND | Ground reference | Return path for internal circuitry and external pullup resistor; must be low-impedance |
| 3 - OUT | Digital output | Open-drain, active-low alert signal; requires external pullup (10–100 kΩ) to VS or system rail |
| 4 - HYSTSET | Digital input | Selects hysteresis: GND = 5°C, VS = 10°C - determines temperature drop required to reset output |
| 5 - VS | Power supply | Single 1.4–3.6 V supply input; bypass with 0.1-μF capacitor placed adjacent to pin |
| 6 - TRIPSET1 | Digital input | MSB of trip point selection; combined with TRIPSET0 to configure 50°C/55°C/60°C/65°C thresholds |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in safety-critical automotive systems |
| Pin-selectable trip points | Four discrete thresholds (50°C/55°C/60°C/65°C) set via two logic inputs - no programming or firmware needed |
| Configurable hysteresis | 5°C or 10°C window selectable by single HYSTSET pin - eliminates thermal chatter in noisy environments |
| Ultra-low power consumption | 15 μA maximum supply current - enables continuous monitoring in always-on vehicle subsystems |
| Self-contained operation | No external components beyond bypass cap and pullup resistor - reduces BOM count and layout complexity |
Applications
| Engine Control Unit (ECU) | Infotainment System |
|---|---|
Use Scenario: Monitoring CPU/GPU junction temperature during high-load operation to prevent thermal throttling or permanent damage. IC Role / Device Role / Timing Role: Standalone overtemperature alert generator triggering MCU interrupt or hardware reset. Use Value: Enables immediate thermal shutdown at precisely 60°C with 5°C hysteresis, avoiding false triggers from transient spikes. |
Use Scenario: Protecting display backlight drivers and audio amplifiers from overheating in enclosed dash-mounted enclosures. IC Role / Device Role / Timing Role: Direct thermal cutoff signal source for power management ICs controlling DC-DC converters. Use Value: Delivers ±0.2°C accuracy across –40°C to 125°C, ensuring reliable protection under wide ambient and load conditions. |
| Climate Control Module | Automotive Black Box |
Use Scenario: Detecting excessive heat buildup in HVAC blower motor driver circuits during extended high-speed operation. IC Role / Device Role / Timing Role: Hardware-level thermal watchdog independent of main controller software stack. Use Value: 15 μA quiescent current allows continuous monitoring without impacting battery drain in parked vehicle mode. |
Use Scenario: Preventing SD card corruption or memory degradation due to sustained high ambient temperatures inside sealed recording units. IC Role / Device Role / Timing Role: Temperature-triggered flag generator asserting fault condition to host processor via GPIO. Use Value: Open-drain output supports direct connection to 3.3 V or 5 V logic rails with no level-shifting required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP303AQDRLRQ1 | Same SOT563 package and pinout; ±0.1°C typical accuracy (vs. ±0.2°C); 10 μA max IQ (vs. 15 μA) | Higher accuracy required for premium ECU thermal margining; lower power for ultra-low-duty-cycle wake-up monitoring | Select TMP303AQDRLRQ1 when tighter trip tolerance or sub-10 μA supply current is mandatory |
| LM75BIMM/NOPB | I²C interface, 9-bit temperature readback, ±2°C accuracy, SOIC-8 package, no pin-selectable trip points | Requires MCU firmware support; used where temperature telemetry + alert is needed, not just binary switching | Choose LM75BIMM/NOPB only if digital temperature reporting and configurable alert registers are required |
Compared with TMP302AQDRLRQ1, TMP303AQDRLRQ1 offers higher precision and lower power but identical functionality and pin compatibility, while LM75BIMM/NOPB provides temperature telemetry at the cost of added software complexity and larger footprint.
Availability
TMP302AQDRLRQ1 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 TMP302AQDRLRQ1 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 decades of leadership in automotive-grade IC design and manufacturing.
The TMP302-Q1 product line delivers highly accurate, low-power, pin-configurable temperature switches optimized for AEC-Q100-compliant automotive thermal monitoring without microcontroller dependency.
FAQ
What is the exact trip point range supported by TMP302AQDRLRQ1?
The TMP302AQDRLRQ1 supports four discrete trip points: 50°C, 55°C, 60°C, and 65°C. These are selected using the TRIPSET0 and TRIPSET1 pins per the truth table in the datasheet. The specific variant TMP302AQDRLRQ1 is the "A" version, which defines this 50–65°C range. Other variants (B/C/D) cover higher temperature bands.
Does TMP302AQDRLRQ1 require external components to operate?
Yes, TMP302AQDRLRQ1 requires two external components: a 0.1-μF ceramic bypass capacitor between VS and GND, placed adjacent to the device, and a pullup resistor (10–100 kΩ) from OUT to VS or another compatible logic rail. No other passive or active components are needed for basic temperature-switch operation.
How is hysteresis configured on TMP302AQDRLRQ1?
Hysteresis on TMP302AQDRLRQ1 is set via the HYSTSET pin: connecting HYSTSET to GND selects 5°C hysteresis, while connecting it to VS selects 10°C hysteresis. This determines the temperature drop required below the trip point before the OUT pin returns high. The setting is static and does not require dynamic control.
Is TMP302AQDRLRQ1 compatible with 1.8 V supply systems?
Yes, TMP302AQDRLRQ1 operates across 1.4 V to 3.6 V, making it fully compatible with 1.8 V automotive domains. At 1.8 V, VIH remains valid (≥1.26 V), VOL stays ≤0.36 V at 3 mA sink, and quiescent current remains within 15 μA - all confirmed across the full temperature range.
What automotive qualification does TMP302AQDRLRQ1 meet?
TMP302AQDRLRQ1 is AEC-Q100 qualified for Grade 1 (–40°C to +125°C ambient), with HBM ESD rating of ±2000 V and CDM rating of ±1000 V. It also meets JEDEC moisture sensitivity level 2 (260°C peak reflow) and is manufactured in TI's IATF 16949-certified facilities.
TMP302AQDRLRQ1 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:
- 50°C, 55°C, 60°C, 65°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
TMP302AQDRLRQ1 FAQ
1.How can I place an order for TMP302AQDRLRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP302AQDRLRQ1 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 TMP302AQDRLRQ1 reliable?
The price and inventory of TMP302AQDRLRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP302AQDRLRQ1 is usually 5 days.
3.What payment methods are accepted for TMP302AQDRLRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP302AQDRLRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP302AQDRLRQ1?
TMP302AQDRLRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP302AQDRLRQ1 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 TMP302AQDRLRQ1?
For technical support, including TMP302AQDRLRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP302AQDRLRQ1 requirements.
6.How does Aetrix verify that TMP302AQDRLRQ1 is sourced from the original manufacturer or authorized distributors?
All TMP302AQDRLRQ1 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 TMP302AQDRLRQ1 meets industry standards.
7.What is the process for return or replacement of TMP302AQDRLRQ1?
All TMP302AQDRLRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TMP302AQDRLRQ1, 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 TMP302AQDRLRQ1 part is unused and in its original packaging.
Return procedure for TMP302AQDRLRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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