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Texas Instruments TMP20AIDCKR
- Part No.:
- TMP20AIDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TMP20AIDCKR.pdf
- Description:
- SENSOR ANALOG -55C-130C SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,428
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Product details
Overview
TMP20AIDCKR 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 output at 0°C - used for thermal monitoring in battery-powered portable electronics.
For engineers reviewing the TMP20AIDCKR datasheet, TMP20AIDCKR pinout, TMP20AIDCKR application, or TMP20AIDCKR equivalent, key selection criteria include its low-power analog output architecture, SC70 pin compatibility with LM20, supply voltage flexibility (1.8 V to 5.5 V), and thermal self-heating < 0.01°C.
Technical Context
The TMP20AIDCKR 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 output is inversely proportional to temperature and requires no digital interface or calibration.
It operates in a single functional mode: analog voltage output. Shutdown occurs below 0.5 V supply, reducing current to <20 nA. The SC70-5 package features pin 2 as thermally optimized GND connection, directly tied to the die substrate for improved thermal response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±2.5°C over –55°C to +130°C - enables direct use in thermal protection without system-level calibration. |
| Supply Voltage Range | 1.8 V to 5.5 V - supports operation from single Li-ion cells (3.0–4.2 V) and low-voltage microcontrollers. |
| Quiescent Current | 4 µA max at 25°C - limits self-heating to <0.01°C, preserving measurement integrity in thermally isolated layouts. |
| Output Slope | –11.77 mV/°C typical - provides high sensitivity for 12-bit ADCs with >0.1°C resolution over 100°C span. |
| Output Voltage @ 0°C | 1.8639 V typical - establishes known reference point for linearization and offset compensation. |
| Thermal Resistance θJA | 185°C/W (SC70) - defines maximum temperature rise under 4 µA load; critical for PCB thermal design. |
| Shutdown Threshold | V+ < 0.5 V - enables ultra-low-power sleep mode with <20 nA consumption during system standby. |
Pinout & Package
Package: SC70-5 (DCK), body size 2.00 mm × 1.25 mm, moisture sensitivity level 1 (260°C, unlimited reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NC | No internal connection | May be left floating or grounded; no electrical function - layout flexibility for routing or thermal relief. |
| 2 NC / GND | Thermal & electrical ground | Directly connected to die substrate; must be grounded for optimal thermal response and noise immunity. |
| 3 VOUT | Analog output | High-impedance voltage source (10 Ω sink, <1 Ω source); drives up to 1 nF load directly. |
| 4 V+ | Positive supply | Accepts 1.8–5.5 V; bypassing with 100 nF recommended near pin for noise-sensitive applications. |
| 5 GND | Power ground | Reference return path for supply and output; should connect to low-impedance ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Micro-size SC70-5 package | 2.00 mm × 1.25 mm footprint - saves board space in compact portable devices like smartphones and wearables. |
| Low supply current | 4 µA max - extends battery life in always-on thermal monitoring applications (e.g., battery management ICs). |
| Wide operating temperature | –55°C to +130°C - supports industrial, automotive under-hood, and computing thermal sensing. |
| SC70 pin compatibility with LM20 | Same 5-pin SC70 footprint and pinout - allows drop-in replacement in existing LM20 designs without layout change. |
| Parabolic transfer function | VO = (–3.88×10⁻⁶×T²) + (–1.15×10⁻²×T) + 1.8639 V - enables <±0.23°C linearization error over narrow ranges (e.g., –10°C to +65°C). |
Applications
| Smartphone Thermal Management | Notebook CPU Throttling |
|---|---|
Use Scenario: Real-time die temperature monitoring of application processors and PMICs in smartphones during burst workloads. IC Role / Device Role / Timing Role: Analog-output temperature sensor providing continuous voltage signal to system MCU ADC. Use Value: Enables dynamic thermal throttling with <±2.5°C accuracy and <0.01°C self-heating, preserving performance while preventing thermal shutdown. |
Use Scenario: Localized hotspot detection on CPU/GPU VRM and SSD modules in ultrabooks. IC Role / Device Role / Timing Role: Precision analog sensor interfaced to embedded controller (EC) or baseband processor ADC. Use Value: Delivers stable output across 1.8–5.5 V supply rails and –40°C to +85°C ambient, supporting fan speed control and thermal event logging. |
| Li-ion Battery Pack Monitoring | White Goods Compressor Control |
Use Scenario: Cell-level temperature sensing in multi-cell battery packs for EVs and power tools. IC Role / Device Role / Timing Role: Low-power analog sensor placed adjacent to cell terminals, reporting to battery management system (BMS) ADC. Use Value: 4 µA quiescent current minimizes parasitic drain during storage; ±2.5°C accuracy ensures safe charge/discharge within JEITA limits. |
Use Scenario: Refrigerant line and compressor housing temperature feedback in inverter-driven air conditioners and refrigerators. IC Role / Device Role / Timing Role: Analog temperature transducer feeding HVAC microcontroller for compressor speed modulation and frost protection. Use Value: Operates reliably from –55°C to +130°C and withstands thermal cycling; SC70 package enables mounting on metal surfaces with minimal thermal lag. |
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), 12 µA quiescent current | Narrower temp range and higher power - less suitable for automotive or extended industrial use | Select when cost sensitivity outweighs accuracy/power needs and LM20 legacy design exists |
| TS20IYFET | SC70-5, ±2.0°C accuracy (–40°C to +125°C), 3.5 µA quiescent current, rail-to-rail output | Slightly better accuracy but limited to 125°C max - not rated for 130°C continuous operation | Prefer for new designs requiring tighter tolerance in consumer-grade environments below 125°C |
Compared with TMP20AIDCKR, LM20CIM5X/NOPB trades accuracy and power efficiency for lower cost and broader legacy support, while TS20IYFET offers marginally better accuracy at reduced temperature range - making TMP20AIDCKR optimal for applications demanding full –55°C to +130°C coverage with ultra-low power.
Availability
TMP20AIDCKR is available at Aetrix Electronics and suitable for smartphone thermal management, notebook CPU throttling, and Li-ion battery pack monitoring requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TMP20AIDCKR 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 TMP20AIDCKR belongs to TI's precision analog temperature sensor product line, designed specifically for low-power, high-accuracy thermal monitoring in space-constrained portable and industrial systems where digital interfaces add unnecessary complexity.
FAQ
What is the operating temperature range of the TMP20AIDCKR?
The TMP20AIDCKR 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 applications in automotive engine bays, industrial motor controls, and outdoor electronics where ambient extremes occur.
Does the TMP20AIDCKR require external calibration?
No, the TMP20AIDCKR does not require external calibration. It delivers ±2.5°C accuracy across its full –55°C to +130°C range as shipped, with no trimming or system-level compensation needed. Its parabolic transfer function is factory-characterized and stable over time and supply voltage variations.
Can the TMP20AIDCKR be used with a 1.8-V microcontroller supply rail?
Yes, the TMP20AIDCKR supports 1.8 V supply operation from 15°C to 130°C. Below 15°C, output voltage approaches 1.8 V and saturates - this is normal behavior and does not damage the device. For sub-zero operation, use ≥2.7 V supply to maintain full transfer function fidelity.
How does the TMP20AIDCKR handle capacitive loads on its VOUT pin?
The TMP20AIDCKR can drive up to 1 nF directly. For larger capacitive loads (1 nF to 10 µF), a 150-Ω series resistor is required between VOUT and the load to ensure stability. Its output impedance is typically 10 Ω when sinking and <1 Ω when sourcing, enabling robust ADC interfacing with proper filtering.
Is the TMP20AIDCKR pin-compatible with other temperature sensors?
Yes, the TMP20AIDCKR in SC70-5 (DCK) package is pin-compatible with the LM20, sharing identical pin 1–5 assignments and footprint. This allows direct substitution in existing LM20 designs without PCB revision, while delivering improved accuracy (±2.5°C vs ±3.0°C) and lower quiescent current (4 µA vs 12 µA).
TMP20AIDCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
TMP20AIDCKR FAQ
1.How can I place an order for TMP20AIDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP20AIDCKR 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 TMP20AIDCKR reliable?
The price and inventory of TMP20AIDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP20AIDCKR is usually 5 days.
3.What payment methods are accepted for TMP20AIDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP20AIDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP20AIDCKR?
TMP20AIDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP20AIDCKR 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 TMP20AIDCKR?
For technical support, including TMP20AIDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP20AIDCKR requirements.
6.How does Aetrix verify that TMP20AIDCKR is sourced from the original manufacturer or authorized distributors?
All TMP20AIDCKR 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 TMP20AIDCKR meets industry standards.
7.What is the process for return or replacement of TMP20AIDCKR?
All TMP20AIDCKR units undergo pre-shipment inspection (PSI). If there is an issue with TMP20AIDCKR, 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 TMP20AIDCKR part is unused and in its original packaging.
Return procedure for TMP20AIDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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