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Texas Instruments TMP20AIDCKT
- Part No.:
- TMP20AIDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TMP20AIDCKT.pdf
- Description:
- SENSOR ANALOG -55C-130C SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,885
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Product details
Overview
TMP20AIDCKT from Texas Instruments is a precision analog-output CMOS temperature sensor in SC70-5 package, delivering ±2.5°C accuracy across –55°C to +130°C, 4 µA max quiescent current, and –11.77 mV/°C output slope with 1.8639 V at 0°C - used for thermal monitoring in battery-powered portable electronics.
For engineers reviewing the TMP20AIDCKT datasheet, TMP20AIDCKT pinout, TMP20AIDCKT application, or TMP20AIDCKT equivalent, key selection criteria include its low-power analog output architecture, SC70 pin compatibility with LM20, shutdown mode below 0.5 V, and thermal self-heating <0.01°C - critical for high-accuracy embedded sensing without ADC calibration overhead.
Technical Context
The TMP20AIDCKT implements a parabolic transfer function VO = (–3.88×10⁻⁶×T²) + (–1.15×10⁻²×T) + 1.8639 V over –55°C to +130°C, with linear approximations available per temperature range. Its analog output is inversely proportional to temperature and requires no digital interface or configuration.
It operates from 1.8 V to 5.5 V supply, drawing ≤4 µA at 25°C and ≤6 µA across full temperature range, entering <20 nA shutdown when V+ < 0.5 V. Output impedance is ≤10 Ω (sinking) and <1 Ω (sourcing), supporting direct connection to MCU ADC inputs with minimal buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±2.5°C from –55°C to +130°C - enables single-point calibration in industrial and consumer thermal management systems |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct connection to Li-ion battery rails and low-voltage microcontrollers |
| Quiescent Current | 4 µA maximum at 25°C - limits self-heating to <0.01°C, preserving measurement integrity in thermally isolated PCB layouts |
| Output Slope | –11.77 mV/°C typical - provides predictable voltage delta per degree for analog front-end scaling |
| Output Voltage @ 0°C | 1.8639 V typical - establishes known reference point for linearization or offset compensation |
| Shutdown Threshold | V+ < 0.5 V - reduces current to <20 nA for ultra-low-power sleep modes in portable devices |
| Package | SC70-5 (DCK) - 2.00 mm × 1.25 mm footprint ideal for space-constrained mobile and wearable designs |
Pinout & Package
Package: SC70-5 (DCK), 2.00 mm × 1.25 mm body size, lead-free, RoHS-compliant, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Must be grounded or left floating; no electrical function - layout flexibility for routing or thermal pad anchoring |
| 2 (NC/GND) | Thermal & electrical ground | Die substrate tie; must connect to GND plane for optimal thermal response and noise immunity - not usable as signal pin |
| 3 (VOUT) | Analog output | High-impedance voltage source (≤10 Ω sinking, <1 Ω sourcing); drives up to 1 nF load directly into MCU ADC |
| 4 (V+) | Positive supply | Accepts 1.8–5.5 V; bypassing with 100-nF capacitor recommended near pin for noise rejection |
| 5 (GND) | Power ground | Reference return path for VOUT and V+; must be low-impedance connection to minimize ground bounce errors |
Key Features
| Feature | Design Value |
|---|---|
| ±2.5°C accuracy over –55°C to +130°C | Eliminates need for system-level temperature calibration across automotive and industrial ambient ranges |
| 4 µA max supply current | Enables continuous monitoring in coin-cell-powered IoT sensors with multi-year battery life |
| SC70-5 pinout compatible with LM20 | Allows drop-in replacement in existing LM20-based designs without PCB revision |
| Parabolic transfer function | Supports high-accuracy temperature reconstruction via polynomial interpolation in host firmware |
| Shutdown mode (<20 nA) | Permits periodic wake-up sampling in ultra-low-power applications like environmental data loggers |
Applications
| Smartphone Thermal Throttling | USB-C Power Delivery Monitoring |
|---|---|
Use Scenario: Real-time die temperature tracking in smartphone AP/SoC to trigger dynamic frequency scaling before thermal throttling. IC Role / Device Role / Timing Role: Analog-output temperature sensor providing continuous voltage feedback to PMIC or baseband processor ADC. Use Value: ±2.5°C accuracy ensures reliable thermal margin control within 5°C of silicon junction limit, preventing performance collapse. |
Use Scenario: Monitoring cable and connector temperature during 100W USB-C PD charging to prevent overheating and enforce safety cutoffs. IC Role / Device Role / Timing Role: Low-power analog sensor placed near USB-C receptacle, interfaced to PD controller's ADC channel. Use Value: 4 µA quiescent current avoids loading the 5-V VCONN rail; SC70 size fits tight connector-side PCB real estate. |
| Lithium-Ion Battery Pack Protection | White Goods Compressor Control |
Use Scenario: Cell-level temperature sensing inside sealed 18650/21700 battery modules to detect thermal runaway precursors. IC Role / Device Role / Timing Role: Standalone analog sensor feeding voltage to battery monitor IC (e.g., BQ769x0) for overtemperature flag generation. Use Value: –55°C to +130°C operating range covers full battery abuse conditions; shutdown mode isolates sensor during pack deep discharge. |
Use Scenario: Monitoring compressor motor winding temperature in inverter-driven refrigerators to optimize cooling cycles and prevent insulation failure. IC Role / Device Role / Timing Role: Embedded analog sensor mounted on compressor housing, connected to main controller ADC for closed-loop thermal regulation. Use Value: 0.01°C self-heating ensures true ambient reading; 1.8 V minimum supply allows operation during brownout events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog-output temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM20CIM5X/NOPB | Same SC70-5 package, ±3.0°C accuracy (–25°C to +125°C), higher 12 µA IQ | Limited to narrower temp range; less suitable for automotive under-hood use | Select when cost sensitivity outweighs accuracy and power requirements |
| TS331IYLT | SC70-5, comparator-based output (open-drain), no analog voltage output | Requires external reference/resistor network to emulate analog behavior; not drop-in | Choose only if threshold detection suffices and analog linearity is unnecessary |
Compared with LM20CIM5X/NOPB and TS331IYLT, TMP20AIDCKT delivers superior accuracy over wider temperature range and lowest quiescent current - making it optimal for precision analog-sensing applications where calibration effort and battery life are constrained.
Availability
TMP20AIDCKT is available at Aetrix Electronics and suitable for battery management, USB-C power delivery, and white goods compressor control requiring stable component supply and long-term production continuity.
Supply support for TMP20AIDCKT 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 sensing, power management, and signal chain solutions.
The TMP20 series was designed for ultra-low-power, high-accuracy analog temperature sensing in space- and energy-constrained portable and industrial systems - emphasizing simplicity, reliability, and direct ADC interfacing without digital overhead.
FAQ
What is the operating temperature range of the TMP20AIDCKT?
The TMP20AIDCKT operates from –55°C to +130°C with supply voltages of 2.7 V to 5.5 V. At 1.8 V supply, operation is guaranteed from +15°C to +130°C. This extended range supports deployment in automotive engine bays, industrial motor controls, and outdoor electronics where ambient extremes occur.
Does the TMP20AIDCKT require external calibration for accurate readings?
No, the TMP20AIDCKT is factory-trimmed to ±2.5°C accuracy across –55°C to +130°C and does not require external calibration. Its parabolic transfer function is characterized and documented, enabling software-based linearization if higher resolution is needed - but single-point offset correction is sufficient for most applications using the TMP20AIDCKT.
Can the TMP20AIDCKT drive an MCU ADC input directly without a buffer amplifier?
Yes, the TMP20AIDCKT can drive most MCU ADC inputs directly. Its output impedance is <1 Ω when sourcing and ≤10 Ω when sinking, and it supports up to 1 nF capacitive load. For high-frequency sampling or noisy environments, a small series resistor (e.g., 150 Ω) and local decoupling capacitor are recommended - but no active buffer is required for standard use of the TMP20AIDCKT.
How does the TMP20AIDCKT enter shutdown mode, and what is its shutdown current?
The TMP20AIDCKT enters shutdown mode automatically when V+ falls below 0.5 V, reducing supply current to less than 20 nA (typical). This feature enables ultra-low-power sleep states in battery-operated systems. The device resumes normal operation immediately upon V+ rising above 0.5 V - no reset or initialization sequence is needed for the TMP20AIDCKT.
Is the TMP20AIDCKT pin-compatible with the LM20, and what does that mean for design reuse?
Yes, the TMP20AIDCKT in SC70-5 (DCK) package is pin-compatible with the LM20. Pin 1 (NC), Pin 2 (NC/GND), Pin 3 (VOUT), Pin 4 (V+), and Pin 5 (GND) match identically. This allows direct substitution in existing LM20 layouts without PCB changes - delivering improved accuracy (±2.5°C vs ±3.0°C) and lower power (4 µA vs 12 µA) while retaining mechanical and electrical fit for the TMP20AIDCKT.
TMP20AIDCKT 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:
- -55°C ~ 130°C
- Sensing Temperature - Remote:
- -
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 11.77mV/°C
- Features:
- Shutdown Mode
- Accuracy - Highest (Lowest):
- ±0.5°C (±2.5°C)
- Test Condition:
- -50°C ~ 130°C (-55°C ~ 130°C)
- Operating Temperature:
- -55°C ~ 150°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SC-70-5
TMP20AIDCKT FAQ
1.How can I place an order for TMP20AIDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP20AIDCKT 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 TMP20AIDCKT reliable?
The price and inventory of TMP20AIDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP20AIDCKT is usually 5 days.
3.What payment methods are accepted for TMP20AIDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP20AIDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP20AIDCKT?
TMP20AIDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP20AIDCKT 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 TMP20AIDCKT?
For technical support, including TMP20AIDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP20AIDCKT requirements.
6.How does Aetrix verify that TMP20AIDCKT is sourced from the original manufacturer or authorized distributors?
All TMP20AIDCKT 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 TMP20AIDCKT meets industry standards.
7.What is the process for return or replacement of TMP20AIDCKT?
All TMP20AIDCKT units undergo pre-shipment inspection (PSI). If there is an issue with TMP20AIDCKT, 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 TMP20AIDCKT part is unused and in its original packaging.
Return procedure for TMP20AIDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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