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Texas Instruments TMP236AQDBZTQ1
- Part No.:
- TMP236AQDBZTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TMP236AQDBZTQ1.pdf
- Description:
- LOW-POWER HIGH-ACCURACY ANALOG O
- Quantity:
- Payment:
- Shipping:
Inventory:1,081
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Product details
Overview
TMP236AQDBZTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive analog temperature sensor in a 3-pin SOT-23 package, delivering ±2.5°C max accuracy from –10°C to +125°C, 19.5 mV/°C output gain, and 400 mV offset at 0°C. It operates from 3.1 V to 5.5 V supply, draws only 10 µA typical current, and drives capacitive loads up to 1000 pF - enabling direct interface with SAR ADC sample-and-hold inputs in battery-sensitive EPS and shifter systems.
For engineers reviewing the TMP236AQDBZTQ1 datasheet, TMP236AQDBZTQ1 pinout, TMP236AQDBZTQ1 application, or TMP236AQDBZTQ1 equivalent, key selection criteria include its grade-1 automotive qualification, tight accuracy over limited high-temp range (–10°C to +125°C), higher gain vs. TMP235-Q1, SOT-23 footprint compatibility with LMT8x-Q1/LM50-Q1, and absence of NC pins in this 3-terminal variant.
Technical Context
The TMP236AQDBZTQ1 implements a precision CMOS bandgap-based temperature sensing core with a class-AB output driver optimized for driving ADC input capacitance. Its piecewise-linear transfer function uses two segments (–10°C to +100°C and +100°C to +125°C) with distinct gain (19.5 mV/°C and 19.7 mV/°C) and offset values to maintain ±2.5°C accuracy across its rated range.
Unlike the TMP235-Q1, it requires minimum 3.1 V supply and is not specified below –10°C; its output voltage spans ~205 mV at –10°C to ~2842 mV at +125°C. The device features short-circuit protected output, 500 µA max output drive, and 800 µs power-on time to support low-duty-cycle thermal monitoring in powertrain subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±2.5°C max from –10°C to +125°C - enables reliable thermal threshold detection in EPS motor control without calibration. |
| Output Gain | 19.5 mV/°C (–10°C to +100°C), 19.7 mV/°C (+100°C to +125°C) - provides >2× voltage swing per degree vs. TMP235-Q1, improving ADC resolution. |
| Supply Range | 3.1 V to 5.5 V - excludes operation below 3.1 V, requiring compatible LDO or MCU rail in 3.3 V systems. |
| Quiescent Current | 10 µA typical at 25°C - supports microamp-level power cycling in always-on vehicle modules. |
| Output Drive | 500 µA max, supports 1000 pF load - eliminates need for external buffer when interfacing with typical SAR ADC input stages. |
| Turn-On Time | 800 µs to ±0.5°C accuracy - allows rapid sampling after wake-up, reducing system latency in responsive thermal protection. |
| ESD Rating | HBM ±2000 V, CDM ±500 V - meets AEC-Q100-002/-011 for robustness in automotive assembly and field environments. |
Pinout & Package
Package: 3-pin SOT-23 (DBZ), body size 2.92 mm × 1.30 mm, moisture sensitivity level (MSL) Level-2-260°C-1 year, RoHS compliant, lead finish NiPdAu/Sn/NiPdAu.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 3.1–5.5 V; bypass capacitor required near pin for noise immunity in noisy automotive rails. |
| VOUT | Analog output voltage | Linear voltage proportional to temperature (19.5 mV/°C); directly connects to ADC input with ≤1000 pF total capacitance. |
| GND | Power supply ground | Must be low-impedance connection to system ground plane; shared return path affects accuracy if noisy. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation in automotive powertrain and chassis systems per stress test requirements. |
| Functional safety documentation support | Provides FIT data, failure mode analysis, and diagnostic coverage guidance for ISO 26262 ASIL-B system integration. |
| Strong class-AB output driver | Delivers 500 µA into 1000 pF, enabling direct ADC interface without external op-amp buffering or RC filtering. |
| Short-circuit protected output | Withstands indefinite VOUT-to-GND or VOUT-to-VDD shorts without latch-up or parametric shift during fault conditions. |
| Footprint compatibility | Pin-for-pin matches industry-standard LMT8x-Q1, LM50-Q1, and LM20 sensors - simplifies drop-in replacement in existing layouts. |
Applications
| Automotive Head Unit | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Monitoring SoC and processor die temperature inside infotainment head units to prevent thermal throttling during navigation rendering or voice processing. IC Role / Device Role / Timing Role: Analog temperature sensor providing continuous voltage output proportional to ambient PCB temperature near SoC. Use Value: 19.5 mV/°C gain yields >2× signal swing vs. lower-gain alternatives, improving 12-bit ADC effective resolution by ~1 LSB over 0–85°C range. | Use Scenario: Measuring motor winding temperature in EPS assist motors to enforce torque derating before insulation failure. IC Role / Device Role / Timing Role: High-reliability analog sensor placed on motor control board, reporting real-time temperature to MCU via ADC. Use Value: ±2.5°C accuracy ensures precise thermal margin enforcement at critical 125°C limit, avoiding premature derating or unsafe operation. |
| Shifter System | Battery Management System (BMS) |
Use Scenario: Detecting gear selector solenoid coil temperature rise during prolonged engagement to prevent overheating-induced position drift. IC Role / Device Role / Timing Role: Localized temperature monitor mounted adjacent to solenoid driver IC on shifter control module PCB. Use Value: 800 µs turn-on time enables fast thermal response after ignition-on, supporting immediate thermal validation before first gear actuation. | Use Scenario: Monitoring 12 V auxiliary battery temperature in start-stop systems to adjust charging voltage and prevent sulfation at low temperatures. IC Role / Device Role / Timing Role: Low-power analog sensor connected to BMS microcontroller's internal ADC channel. Use Value: 10 µA quiescent current minimizes parasitic drain on auxiliary battery during vehicle sleep mode, extending retention time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog-output temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMT87QDCYRQ1 | Higher gain (13.6 mV/°C), wider range (–40°C to +150°C), but lower accuracy (±3°C) and no functional safety documentation. | Used in engine coolant monitoring where extended range matters more than tight accuracy. | Select when full –40°C to +150°C coverage is mandatory and ±3°C tolerance is acceptable. |
| LM50QIMM/NOPB | Lower gain (10 mV/°C), same SOT-23-3 package, ±3°C accuracy, no AEC-Q100 Grade 1 rating (only Grade 3). | Deployed in non-safety-critical cabin modules like HVAC control where cost is prioritized over qualification level. | Choose for cost-sensitive, non-safety applications where 10 mV/°C gain and Grade 3 qualification suffice. |
Compared with LMT87QDCYRQ1 and LM50QIMM/NOPB, the TMP236AQDBZTQ1 offers superior accuracy (±2.5°C vs. ±3°C), documented functional safety support, and Grade 1 qualification - making it the preferred choice for ASIL-B thermal monitoring in EPS and shifter systems despite its narrower –10°C lower limit.
Availability
TMP236AQDBZTQ1 is available at Aetrix Electronics and suitable for automotive head unit thermal management, electric power steering motor protection, and shifter solenoid temperature monitoring requiring stable component supply across production lifecycles.
Supply support for TMP236AQDBZTQ1 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, specializing in analog and embedded processing technologies with broad automotive, industrial, and consumer product portfolios.
The TMP23x-Q1 product line delivers AEC-Q100 qualified analog temperature sensors optimized for cost-effective, high-accuracy thermal monitoring in automotive powertrain, chassis, and infotainment systems - replacing thermistors with linear, factory-calibrated outputs.
FAQ
What is the operating temperature range of the TMP236AQDBZTQ1?
The TMP236AQDBZTQ1 is specified for operation from –10°C to +125°C, with maximum ±2.5°C accuracy across this full range. It is not characterized below –10°C; for extended low-temperature coverage, consider the TMP235AQDBZRQ1 (–40°C to +125°C). This range aligns with AEC-Q100 Grade 1 requirements and suits EPS, shifter, and head unit applications where ambient extremes are bounded.
Does the TMP236AQDBZTQ1 require external calibration?
No, the TMP236AQDBZTQ1 is factory-calibrated and requires no external calibration. Its ±2.5°C accuracy over –10°C to +125°C includes initial offset, gain error, and linearity - verified across process, voltage, and temperature. The piecewise-linear transfer function (with inflection at 100°C) is pre-characterized and documented in the datasheet's TMP236-Q1 Transfer Table, enabling direct voltage-to-temperature conversion in firmware.
Can the TMP236AQDBZTQ1 drive a 10-bit ADC input directly?
Yes, the TMP236AQDBZTQ1 can directly drive a 10-bit ADC input. Its 500 µA output drive capability and 1000 pF capacitive load rating accommodate typical SAR ADC input capacitances (e.g., 20–50 pF sampling capacitor plus multiplexer and stray capacitance). For optimal performance, TI recommends adding a 680 pF filter capacitor (CFILTER) between VOUT and GND near the ADC input to limit total load and reduce sampling error.
Is the TMP236AQDBZTQ1 pin-compatible with other SOT-23 temperature sensors?
Yes, the TMP236AQDBZTQ1 uses the standard 3-pin SOT-23 (DBZ) package with VDD–VOUT–GND pinout (pin 1–2–3), matching LMT8x-Q1, LM50-Q1, and LM20 footprints. This enables mechanical and layout compatibility - though electrical differences (gain, accuracy, supply range) must be validated in circuit design. No NC pins are present, simplifying routing versus 5-pin SC70 variants.
What functional safety documentation is available for the TMP236AQDBZTQ1?
Texas Instruments provides functional safety documentation for the TMP236AQDBZTQ1 including FIT rate data, failure mode effect analysis (FMEA), and diagnostic coverage guidance - all accessible via the TI product folder. This supports ISO 26262 ASIL-B system development but does not constitute full ASIL-B certification; system-level validation remains the responsibility of the integrator. Documentation aids safety case development for thermal monitoring in EPS and shifter modules.
TMP236AQDBZTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Analog, Local
- Sensing Temperature - Local:
- -10°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 3.1V ~ 5.5V
- Resolution:
- 19.5mV/°C
- Features:
- -
- Accuracy - Highest (Lowest):
- ±2.5°C
- Test Condition:
- 0°C ~ 85°C (-40°C ~ 125°C)
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- SOT-23-3
TMP236AQDBZTQ1 FAQ
1.How can I place an order for TMP236AQDBZTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP236AQDBZTQ1 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 TMP236AQDBZTQ1 reliable?
The price and inventory of TMP236AQDBZTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP236AQDBZTQ1 is usually 5 days.
3.What payment methods are accepted for TMP236AQDBZTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP236AQDBZTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP236AQDBZTQ1?
TMP236AQDBZTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP236AQDBZTQ1 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 TMP236AQDBZTQ1?
For technical support, including TMP236AQDBZTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP236AQDBZTQ1 requirements.
6.How does Aetrix verify that TMP236AQDBZTQ1 is sourced from the original manufacturer or authorized distributors?
All TMP236AQDBZTQ1 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 TMP236AQDBZTQ1 meets industry standards.
7.What is the process for return or replacement of TMP236AQDBZTQ1?
All TMP236AQDBZTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TMP236AQDBZTQ1, 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 TMP236AQDBZTQ1 part is unused and in its original packaging.
Return procedure for TMP236AQDBZTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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