My Inquiry
My Account
Texas Instruments TMP235A4DCKT
- Part No.:
- TMP235A4DCKT
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TMP235A4DCKT.pdf
- Description:
- SENSOR ANALOG -40C-150C SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,547
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TMP235A4DCKT from Texas Instruments is a precision analog-output temperature sensor in SC70-5 package, delivering ±1°C typical accuracy over –40°C to +150°C, 10 mV/°C positive-slope output with 500 mV offset at 0°C, and ultra-low 9 µA quiescent current - ideal for battery-powered industrial monitoring and automotive infotainment thermal sensing.
For engineers reviewing the TMP235A4DCKT datasheet, TMP235A4DCKT pinout, TMP235A4DCKT application, or TMP235A4DCKT equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The TMP235A4DCKT implements a CMOS-based linear analog temperature transducer with piecewise-linear calibration across three temperature segments (–40°C to +100°C, +100°C to +125°C, +125°C to +150°C), ensuring ±1°C typical accuracy without digital compensation. Its class-AB output driver delivers up to 500 µA while driving capacitive loads ≤1000 pF directly into ADC sample-and-hold inputs.
It operates from 2.3 V to 5.5 V supply, achieves 800 µs power-on time to ±0.5°C accuracy, and features short-circuit protected output with ±0.1 °C/V line regulation - enabling stable analog temperature measurement in noisy, space-constrained, low-power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy (typ) | ±1°C from –40°C to +150°C - enables single-point calibration in wide-range industrial sensors without software correction |
| Output slope | 10 mV/°C - simplifies analog signal chain design with predictable voltage change per degree |
| Offset at 0°C | 500 mV - allows full-scale use of 0–3.3 V ADC range without negative rail or level-shifting |
| Supply current | 9 µA typical - supports multi-year operation on coin-cell batteries in wireless sensor nodes |
| Output drive | 500 µA max, 1000 pF load - interfaces directly to SAR ADC inputs without buffer amplifiers |
| Turn-on time | 800 µs to ±0.5°C - enables rapid thermal sampling in duty-cycled power architectures |
| Operating voltage | 2.3 V to 5.5 V - compatible with Li-ion, 3.3 V, and 5 V system rails without LDO |
Pinout & Package
Package: SC70-5 (2.00 mm × 1.25 mm), surface-mount, RoHS-compliant, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | May be left floating or tied to GND; no electrical function or timing impact |
| 2 (GND) | Power ground reference | Return path for supply and output; must connect to low-impedance system ground plane |
| 3 (VOUT) | Analog temperature-proportional output | Delivers 500 mV + 10 mV/°C linear voltage; drives ≤1000 pF directly into ADC input |
| 4 (VDD) | Positive supply input | Accepts 2.3–5.5 V; requires local 0.1 µF bypass capacitor to suppress supply noise |
| 5 (NC) | No internal connection | Electrically isolated; no routing or termination required |
Key Features
| Feature | Design Value |
|---|---|
| ±1°C typical accuracy over –40°C to +150°C | Reduces need for system-level calibration in automotive and industrial environments where ambient extremes occur |
| 10 mV/°C analog output with 500 mV offset | Enables direct connection to 12-bit ADCs with >0.1°C effective resolution using standard 3.3 V references |
| 9 µA quiescent current | Permits microcontroller wake-up triggered by external interrupt, minimizing average power in always-on thermal monitors |
| Class-AB output stage | Provides strong drive capability to overcome parasitic capacitance in PCB traces and ADC input networks |
| Short-circuit protected output | Prevents latch-up or damage during board-level ESD events or accidental probe shorts during debug |
Applications
| Motor Drive Thermal Monitoring | Automotive Infotainment SoC Throttling |
|---|---|
Use Scenario: Real-time junction temperature tracking of IGBT modules in HVAC motor drives to prevent thermal runaway. IC Role / Device Role / Timing Role: Analog temperature sensor providing continuous voltage output proportional to heatsink temperature, sampled every 10 ms by MCU ADC. Use Value: ±1°C accuracy ensures precise thermal margining; 9 µA current enables always-on monitoring without impacting system efficiency. | Use Scenario: On-die thermal feedback for dynamic frequency scaling of infotainment SoCs in vehicles operating from –40°C to +85°C ambient. IC Role / Device Role / Timing Role: External reference sensor placed near SoC package edge, delivering calibrated analog voltage to system PMIC for thermal management decisions. Use Value: 10 mV/°C slope and 500 mV offset allow full utilization of 0–3.3 V ADC range; SC70-5 footprint fits tight layout constraints near processor BGA. |
| Wireless Sensor Node Ambient Sensing | Industrial PLC Cabinet Temperature Logging |
Use Scenario: Battery-powered LoRaWAN node measuring ambient cabinet temperature in remote substations with 10-year target lifetime. IC Role / Device Role / Timing Role: Primary temperature transducer powered intermittently by microcontroller; outputs analog voltage only during active measurement windows. Use Value: 800 µs turn-on time and 9 µA sleep current enable sub-µA average system current when combined with deep-sleep MCU modes. | Use Scenario: DIN-rail mounted PLC monitoring internal cabinet temperature to trigger fan control or alarm thresholds at 60°C and 75°C. IC Role / Device Role / Timing Role: Fixed-mount analog sensor interfaced to PLC's integrated 12-bit ADC channel, updated every second for HMI display and logic control. Use Value: ±1°C accuracy over –40°C to +150°C ensures reliable operation across seasonal extremes; SC70-5 package withstands industrial reflow and vibration. |
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 |
|---|---|---|---|
| LMT86DCKR | Higher gain (13.6 mV/°C), ±1.5°C accuracy over –50°C to +150°C, same SC70-5 package | Optimized for high-resolution delta-T measurements; less suitable for absolute temperature where 10 mV/°C simplifies scaling | Select LMT86DCKR when higher output swing per degree improves SNR in low-noise ADC designs |
| TMP235A2DCKR | Same package and pinout; tighter ±0.5°C typical accuracy over 0°C to +70°C, but identical ±1°C spec over full –40°C to +150°C range | Used where initial production calibration targets tighter tolerance bands before field aging effects dominate | Select TMP235A2DCKR if factory calibration infrastructure supports tighter binning and cost premium is acceptable |
Compared with LMT86DCKR and TMP235A2DCKR, TMP235A4DCKT offers the lowest unit cost among SC70-5 analog temperature sensors with guaranteed ±1°C performance across automotive and industrial temperature ranges, making it optimal for cost-sensitive, high-volume thermal monitoring where moderate accuracy suffices.
Availability
TMP235A4DCKT is available at Aetrix Electronics and suitable for industrial PLC cabinet monitoring, automotive infotainment SoC throttling, and wireless sensor node ambient sensing requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TMP235A4DCKT 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 precision analog ICs and industrial-grade signal conditioning solutions.
The TMP23x product line was designed specifically for high-accuracy, low-power analog temperature sensing in space-constrained, battery-operated, and thermally demanding applications - replacing thermistors with improved linearity, stability, and ease of integration.
FAQ
What is the operating temperature range of the TMP235A4DCKT?
The TMP235A4DCKT operates from –40°C to +150°C with ±1°C typical accuracy across that full range. Its specified accuracy includes contributions from line regulation and is measured under no-load conditions. The device maintains functionality beyond these limits, but accuracy degrades outside the rated range, and absolute maximum ratings must not be exceeded.
Does the TMP235A4DCKT require external calibration?
No, the TMP235A4DCKT does not require external calibration for its specified ±1°C typical accuracy. It uses factory-trimmed circuitry and piecewise-linear characterization to achieve this performance. System-level calibration may still be applied for applications demanding <0.5°C absolute accuracy, but the TMP235A4DCKT delivers usable results out-of-box in most industrial and automotive contexts.
Can the TMP235A4DCKT drive a 1000 pF load directly?
Yes, the TMP235A4DCKT is characterized to drive up to 1000 pF capacitive load while maintaining specified accuracy and settling behavior. This includes the sum of ADC input capacitance (CMUX + CSAMPLE), PCB trace capacitance, and any external filter capacitor (CFILTER). TI recommends limiting total CLOAD to 1000 pF, typically using a 680 pF CFILTER to reserve margin for ADC input capacitance.
What is the supply voltage range for the TMP235A4DCKT?
The TMP235A4DCKT operates from 2.3 V to 5.5 V DC. Within this range, line regulation is ±0.1 °C/V, meaning output voltage error due to supply variation remains under ±0.1°C per volt change. Operation below 2.3 V risks incomplete internal biasing; above 5.5 V violates absolute maximum rating and may cause permanent damage.
Is the TMP235A4DCKT pin-compatible with other SC70-5 temperature sensors?
Yes, the TMP235A4DCKT shares identical SC70-5 pinout (1: NC, 2: GND, 3: VOUT, 4: VDD, 5: NC) with LMT8x-Q1 and LM20 family devices, enabling drop-in replacement in existing footprints. However, output slope (10 mV/°C vs. 19.5 mV/°C for TMP236 or 13.6 mV/°C for LMT86) and accuracy grade differ - requiring firmware or scaling adjustments in the host system.
TMP235A4DCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- ±1°C
- Test Condition:
- 0°C ~ 70°C (-40°C ~ 150°C)
- Operating Temperature:
- -50°C ~ 150°C (TA)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SC-70-5
TMP235A4DCKT FAQ
1.How can I place an order for TMP235A4DCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP235A4DCKT 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 TMP235A4DCKT reliable?
The price and inventory of TMP235A4DCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP235A4DCKT is usually 5 days.
3.What payment methods are accepted for TMP235A4DCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP235A4DCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP235A4DCKT?
TMP235A4DCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP235A4DCKT 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 TMP235A4DCKT?
For technical support, including TMP235A4DCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP235A4DCKT requirements.
6.How does Aetrix verify that TMP235A4DCKT is sourced from the original manufacturer or authorized distributors?
All TMP235A4DCKT 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 TMP235A4DCKT meets industry standards.
7.What is the process for return or replacement of TMP235A4DCKT?
All TMP235A4DCKT units undergo pre-shipment inspection (PSI). If there is an issue with TMP235A4DCKT, 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 TMP235A4DCKT part is unused and in its original packaging.
Return procedure for TMP235A4DCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TMP235A4DCKT 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…
