My Inquiry
My Account
Texas Instruments TMP235AEDBZRQ1
- Part No.:
- TMP235AEDBZRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TMP235AEDBZRQ1.pdf
- Description:
- IC TEMP SENSOR
- Quantity:
- Payment:
- Shipping:
Inventory:5,797
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TMP235AEDBZRQ1 from Texas Instruments is an AEC-Q100 Grade 0 automotive-qualified analog-output CMOS temperature sensor in a 3-pin SOT-23 package, delivering ±2.5°C accuracy across –40°C to +150°C, 10 mV/°C positive-slope output with 500 mV offset at 0°C, and operates from 2.3 V to 5.5 V supply. It serves as a precision thermal monitor in engine control units and battery management systems where high-temperature stability and low quiescent current are critical.
For engineers reviewing the TMP235AEDBZRQ1 datasheet, TMP235AEDBZRQ1 pinout, TMP235AEDBZRQ1 application, or TMP235AEDBZRQ1 equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade specifications, and real-world implementation guidance for powertrain and infotainment thermal sensing.
Technical Context
The TMP235AEDBZRQ1 implements a precision bandgap-based temperature transducer with class-AB output driver architecture, enabling direct interface to SAR ADC sample-and-hold inputs without external buffering. Its piecewise-linear transfer function-defined across three temperature segments (–40°C to +100°C, +100°C to +125°C, +125°C to +150°C)-ensures ±0.5°C typical accuracy from 0°C to +70°C while maintaining ≤±2.5°C max error over full range.
It features short-circuit protected output, 9 µA typical quiescent current, and robust capacitive load drive capability up to 1000 pF. Functional safety documentation support is provided per ISO 26262 requirements, and ESD ratings meet AEC-Q100-002 HBM Class 2 (±2000 V) and AEC-Q100-011 CDM Class C4B (±500 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±2.5°C max over –40°C to +150°C; enables reliable thermal shutdown decisions in gasoline engines without calibration. |
| Output Sensitivity | 10 mV/°C with 500 mV offset at 0°C; yields 2.0 V output at +150°C, simplifying 12-bit ADC resolution mapping. |
| Supply Range | 2.3 V to 5.5 V; supports direct connection to 3.3 V or 5 V automotive domain controllers without LDO. |
| Quiescent Current | 9 µA typical; allows continuous monitoring in always-on BMS modules with negligible battery drain. |
| Capacitive Load Drive | Up to 1000 pF; eliminates need for external buffer when interfacing with typical SAR ADC input capacitance (CSAMPLE + CMUX). |
| Power-On Time | 800 µs to ±0.5°C accuracy; ensures fast thermal response during cold-start engine diagnostics. |
| ESD Rating | HBM ±2000 V, CDM ±500 V; meets automotive board-level ESD immunity requirements per ISO 10605. |
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 NIPDAU lead finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Positive supply input; must be bypassed with 0.1 µF capacitor near pin for noise immunity in noisy automotive environments. |
| 2 | VOUT | Analog voltage output proportional to temperature; drives ADC input directly with ≤1000 pF total load including CSAMPLE and CMUX. |
| 3 | GND | Power supply ground; requires low-impedance connection to PCB ground plane to minimize self-heating errors. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for –40°C to +150°C operation in powertrain applications, including exhaust gas recirculation (EGR) and turbocharger monitoring. |
| Functional safety documentation | Includes FIT rate data, failure mode analysis, and diagnostic coverage guidance for ASIL-B system integration per ISO 26262 Part 5. |
| Strong class-AB output driver | Delivers 500 µA max output current, enabling direct drive of ADC sampling capacitors without signal degradation or settling delay. |
| Footprint compatibility | Pin-compatible with industry-standard LMT8x-Q1, LM50-Q1, and LM20 sensors-enables drop-in replacement in existing layouts. |
| Short-circuit protected output | Withstands sustained VOUT-to-GND or VOUT-to-VDD faults without latch-up or parametric shift, improving field reliability. |
Applications
| Automotive Head Unit | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Real-time thermal monitoring of audio amplifier ICs and display drivers inside infotainment head units exposed to cabin ambient extremes. IC Role / Device Role / Timing Role: Analog temperature sensor providing linear voltage output to MCU's internal ADC for thermal derating and fan control logic. Use Value: ±2.5°C accuracy over –40°C to +150°C ensures safe operation under dashboard solar loading; 9 µA quiescent current minimizes standby power draw. |
Use Scenario: Monitoring motor winding and MOSFET junction temperature in EPS electronic control units during high-torque assist events. IC Role / Device Role / Timing Role: Primary thermal sensor feeding closed-loop thermal protection algorithm that disables assist above 140°C. Use Value: 800 µs power-on time enables immediate post-ignition thermal validation; 10 mV/°C slope delivers >140 mV signal margin for noise-immune ADC sampling. |
| Battery Management System (BMS) | Gasoline Engine Control |
Use Scenario: Cell pack surface temperature measurement in 12 V starter battery and 48 V mild-hybrid BMS modules operating under hood vibration and thermal cycling. IC Role / Device Role / Timing Role: High-reliability analog sensor interfaced to isolated ADC for SOC/SOH estimation and charge-rate limiting. Use Value: AEC-Q100 qualification ensures longevity in under-hood environments; SOT-23 footprint allows placement adjacent to battery terminals with minimal trace length. |
Use Scenario: Coolant temperature sensing near cylinder head for fuel injection timing correction and knock detection algorithms. IC Role / Device Role / Timing Role: Precision analog front-end sensor supplying linear voltage to engine control unit (ECU) for real-time thermal compensation. Use Value: ±0.5°C typical accuracy from 0°C to +70°C improves cold-start emissions compliance; 2.3 V minimum supply supports operation during cranking voltage sag. |
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), tighter ±1.5°C max accuracy over –40°C to +150°C, but narrower supply range (1.8 V to 5.5 V). | Preferred for space-constrained designs requiring higher ADC resolution per °C; less suitable for 2.3 V–2.5 V brownout conditions. | Select LMT87QDCYRQ1 when higher sensitivity and tighter accuracy are prioritized over ultra-low supply voltage operation. |
| LM50QIMRQ1 | Lower gain (10 mV/°C), wider accuracy tolerance (±3°C max over –40°C to +125°C), same SOT-23 package and pinout. | Cost-optimized alternative for non-critical zones like cabin ambient sensing; not rated for 150°C operation. | Choose LM50QIMRQ1 only for Grade 1 (–40°C to +125°C) applications where full Grade 0 thermal range is unnecessary. |
Compared with TMP235AEDBZRQ1, LMT87QDCYRQ1 offers superior accuracy and sensitivity but reduced low-voltage margin, while LM50QIMRQ1 trades thermal range and precision for cost-making TMP235AEDBZRQ1 the balanced choice for Grade 0 powertrain and BMS use cases.
Availability
TMP235AEDBZRQ1 is available at Aetrix Electronics and suitable for automotive head unit thermal management, electric power steering (EPS) motor monitoring, and battery management system (BMS) cell pack sensing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TMP235AEDBZRQ1 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 ICs and functional safety solutions.
The TMP23x-Q1 product line is designed specifically for AEC-Q100-compliant automotive thermal sensing, targeting powertrain, chassis, and infotainment subsystems where high-accuracy analog output, low power, and robustness under extreme ambient conditions are essential.
FAQ
What is the maximum operating temperature of the TMP235AEDBZRQ1?
The TMP235AEDBZRQ1 is qualified for continuous operation from –40°C to +150°C per AEC-Q100 Grade 0 specification. This rating is validated across all electrical parameters in the datasheet, including accuracy, output linearity, and supply current, making it suitable for under-hood applications such as engine coolant and turbocharger temperature monitoring where peak ambient temperatures exceed 125°C.
Does the TMP235AEDBZRQ1 require external calibration for automotive use?
No, the TMP235AEDBZRQ1 does not require external calibration for standard automotive deployment. Its ±2.5°C maximum accuracy over –40°C to +150°C is factory-trimmed and specified without user calibration. The device includes piecewise-linear characterization data in its transfer tables, enabling software compensation if higher precision is needed-but most ECU implementations use raw ADC readings with lookup tables or simple linear interpolation.
Can the TMP235AEDBZRQ1 drive a 1000 pF capacitive load directly?
Yes, the TMP235AEDBZRQ1 is explicitly characterized to drive up to 1000 pF total capacitive load-including ADC sampling capacitor (CSAMPLE), multiplexer capacitance (CMUX), and any external filter capacitor (CFILTER)-without external buffering. Its class-AB output stage delivers 500 µA maximum current and maintains stability and accuracy under these conditions, as verified in Figure 6-5 and Section 8.2.1 of the datasheet.
Is the TMP235AEDBZRQ1 pin-compatible with other TI temperature sensors?
Yes, the TMP235AEDBZRQ1 in the SOT-23 (DBZ) package is footprint- and pin-compatible with LMT8x-Q1, LM50-Q1, and LM20 automotive temperature sensors. Pin 1 is VDD, Pin 2 is VOUT, and Pin 3 is GND across all these devices-enabling direct replacement in legacy designs without PCB revision, provided the application's accuracy, temperature range, and supply voltage requirements align.
What functional safety documentation is available for the TMP235AEDBZRQ1?
Texas Instruments provides functional safety documentation for the TMP235AEDBZRQ1, including FIT rate calculation (126 failures per billion hours), failure mode effect analysis (FMEA), and diagnostic coverage guidance for ISO 26262 ASIL-B integration. This documentation is accessible via the TI product folder and supports safety case development for automotive ECUs requiring systematic fault mitigation without hardware redundancy.
TMP235AEDBZRQ1 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:
- Active
- Sensor Type:
- Analog, Local
- Sensing Temperature - Local:
- -40°C ~ 150°C
- Sensing Temperature - Remote:
- -
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.3V ~ 5.5V
- Resolution:
- 10mV/°C
- Features:
- -
- Accuracy - Highest (Lowest):
- ±2.5°C
- Test Condition:
- -40°C ~ 150°C
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- SOT-23-3
TMP235AEDBZRQ1 FAQ
1.How can I place an order for TMP235AEDBZRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP235AEDBZRQ1 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 TMP235AEDBZRQ1 reliable?
The price and inventory of TMP235AEDBZRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP235AEDBZRQ1 is usually 5 days.
3.What payment methods are accepted for TMP235AEDBZRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP235AEDBZRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP235AEDBZRQ1?
TMP235AEDBZRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP235AEDBZRQ1 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 TMP235AEDBZRQ1?
For technical support, including TMP235AEDBZRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP235AEDBZRQ1 requirements.
6.How does Aetrix verify that TMP235AEDBZRQ1 is sourced from the original manufacturer or authorized distributors?
All TMP235AEDBZRQ1 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 TMP235AEDBZRQ1 meets industry standards.
7.What is the process for return or replacement of TMP235AEDBZRQ1?
All TMP235AEDBZRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TMP235AEDBZRQ1, 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 TMP235AEDBZRQ1 part is unused and in its original packaging.
Return procedure for TMP235AEDBZRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TMP235AEDBZRQ1 Tags
-
MCP9700T-E/TT
Microchip Technology
-
MCP9700T-E/LT
Microchip Technology
-
MCP9701T-E/TT
Microchip Technology
-
MCP9701T-E/LT
Microchip Technology
-
TMP235A4DBZR
Texas Instruments
-
MCP9700AT-E/TT
Microchip Technology
-
MCP9700AT-E/LT
Microchip Technology
-
MCP9701AT-E/LT
Microchip Technology
-
MCP9701AT-E/TT
Microchip Technology
,TO-226_straightlead.jpg)
-
LM335Z
STMicroelectronics
-
TMP1075NDRLR
Texas Instruments
-
TMP1075DGKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
