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Texas Instruments TMP100NA/250
- Part No.:
- TMP100NA/250
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- SOT-23-6
- Datasheet:
-
TMP100NA/250.pdf
- Description:
- SENSOR DIGITAL -55C-125C SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:107
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Product details
Overview
TMP100NA/250 from Texas Instruments is a digital temperature sensor IC with integrated ΔΣ ADC, I²C/SMBus interface, and programmable resolution (9–12 bits), delivering ±1°C typical accuracy from –55°C to 125°C. It operates from 2.7 V to 5.5 V, draws only 45 µA quiescent current, and uses a 6-pin SOT-23 package for thermal monitoring in power supplies and embedded systems.
For engineers reviewing the TMP100NA/250 datasheet, TMP100NA/250 pinout, TMP100NA/250 application, or TMP100NA/250 equivalent, key selection considerations include I²C address configurability via two pins (ADD0/ADD1), shutdown mode (0.1 µA), conversion time scalability (320–600 ms at 12-bit), and compatibility with SMBus Alert protocol despite lacking a dedicated ALERT pin.
Technical Context
The TMP100NA/250 implements an on-die diode-based temperature sensing element coupled with a 12-bit delta-sigma ADC and digital control logic. Its serial interface supports Fast Mode (400 kHz) and High-Speed Mode (up to 2 MHz) I²C timing, with open-drain SDA/SCL requiring external pullups.
Configuration is handled via internal registers-including Pointer, Configuration, Temperature, and THIGH/TLOW limit registers-accessed through standard I²C write/read sequences. The device features three functional modes: continuous conversion, one-shot measurement, and shutdown, all controlled via the Configuration Register's SD and OS bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±1°C typical from –55°C to 125°C - enables direct replacement of NTC/PTC thermistors without calibration or linearization. |
| Resolution | User-selectable 9–12 bits (0.0625°C at 12-bit) - allows trade-off between precision and conversion time (320–600 ms). |
| Supply Range | 2.7 V to 5.5 V - compatible with single-supply 3.3 V and 5 V systems without level-shifting. |
| Quiescent Current | 45 µA active, 0.1 µA in shutdown - supports battery-powered and energy-constrained applications. |
| I²C Address Pins | Two pins (ADD0, ADD1) - supports up to eight devices on one bus with fixed 7-bit slave addresses (1001000–1001111). |
| Package | SOT-23 (DBV), 2.90 mm × 1.60 mm - surface-mount footprint optimized for space-constrained PCB layouts. |
| Operating Temp | –55°C to 125°C - qualified for industrial, automotive under-hood, and telecom infrastructure environments. |
Pinout & Package
Package: 6-pin SOT-23 (DBV), body size 2.90 mm × 1.60 mm, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SCL | Serial clock input | Open-drain I²C clock line; requires external pullup; supports Fast and High-Speed modes up to 2 MHz. |
| 2: GND | Ground reference | Primary thermal path via metal lead frame; must be connected to system ground plane for accurate thermal coupling. |
| 3: ADD1 | Address select input | Configures LSB of I²C slave address; sampled once at first bus communication; float/GND/V+ selectable. |
| 4: V+ | Power supply input | Accepts 2.7–5.5 V; bypass capacitor recommended near pin for noise immunity during ADC conversion. |
| 5: ADD0 | Address select input | Configures MSB of I²C slave address; same latching behavior as ADD1; enables 8 unique addresses. |
| 6: SDA | Serial data I/O | Open-drain bidirectional I²C data line; requires external pullup; transmits temperature register and config data. |
Key Features
| Feature | Design Value |
|---|---|
| ΔΣ ADC + on-die diode sensor | Eliminates external signal conditioning; delivers monotonic, linear output without lookup tables or firmware compensation. |
| Programmable resolution (9–12 bit) | Enables dynamic optimization: 9-bit for fast polling (40 ms), 12-bit for high-precision thermal profiling (0.0625°C step). |
| Two I²C address pins | Supports multi-sensor networks on shared bus without address conflicts-critical for server DIMM, GPU, or multi-rail PSU monitoring. |
| Shutdown mode (0.1 µA) | Reduces system standby power; ideal for periodic wake-up architectures using microcontroller GPIO-triggered one-shot conversions. |
| SMBus Alert command support | Allows master to poll for overtemperature events even without physical ALERT pin-enables software-managed thermal interrupts. |
Applications
| Power-Supply Thermal Monitoring | Computer Peripheral Protection |
|---|---|
Use Scenario: Real-time temperature tracking of DC-DC converter MOSFETs and inductors in telecom PSUs. IC Role / Device Role / Timing Role: Primary temperature sensor feeding thermal throttling logic in PMBus-compliant power controllers. Use Value: ±1°C accuracy ensures reliable derating before silicon junction limits are exceeded, extending component lifetime. |
Use Scenario: Overtemperature detection in laptop HDD bays and SSD modules during sustained write workloads. IC Role / Device Role / Timing Role: Local thermal guardrail sensor interfacing directly with EC or BMC via I²C. Use Value: 12-bit resolution enables fine-grained fan speed control, reducing acoustic noise while maintaining safe operating margins. |
| Notebook Battery Management | Industrial Motor Drive Control |
Use Scenario: Cell pack temperature monitoring in Li-ion battery packs for charge/discharge safety cutoff. IC Role / Device Role / Timing Role: Standalone analog-to-digital temperature node with SMBus-compatible readout for fuel gauge ICs. Use Value: Shutdown current of 0.1 µA minimizes self-discharge impact on battery shelf life over extended storage periods. |
Use Scenario: Heat sink temperature feedback in servo drive inverters to prevent IGBT thermal runaway. IC Role / Device Role / Timing Role: Secondary thermal monitor independent of motor controller's internal sensor, improving functional safety redundancy. Use Value: –55°C to 125°C rating ensures operation across full industrial ambient range, including unventilated enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP101NA/250 | Single ADD0 pin, dedicated ALERT output (open-drain), no ADD1; supports SMBus Alert hardware interrupt. | Preferred where hardware interrupt-driven thermal response is required (e.g., immediate fan ramp-up or system reset). | Select TMP101NA/250 when physical ALERT signaling is mandatory; TMP100NA/250 suits software-polling architectures. |
| LM75BIMM/NOPB | Fixed 9-bit resolution (0.5°C), no shutdown mode, wider max temp (125°C) but lower accuracy (±2°C typ), same SOT-23-8 pinout (different pin mapping). | Used in cost-sensitive consumer electronics where coarse thermal thresholds suffice and layout reuse is critical. | Choose LM75BIMM/NOPB only if resolution and power specs are relaxed; not drop-in due to pinout and register incompatibility. |
Compared with TMP101NA/250, TMP100NA/250 trades hardware alert capability for greater I²C address flexibility (8 vs 3 devices per bus); versus LM75BIMM/NOPB, it offers superior accuracy, lower power, and resolution configurability-but requires firmware adaptation for register access.
Availability
TMP100NA/250 is available at Aetrix Electronics and suitable for power-supply thermal monitoring, computer peripheral protection, and notebook battery management requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for TMP100NA/250 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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision sensing and low-power design.
The TMP100NA/250 belongs to TI's precision analog temperature sensor family, engineered for direct thermistor replacement in industrial, computing, and communications systems demanding high accuracy and minimal system-level overhead.
FAQ
What is the maximum I²C clock frequency supported by the TMP100NA/250?
The TMP100NA/250 supports Fast Mode up to 400 kHz and High-Speed Mode up to 2 MHz. In High-Speed Mode, the device disables internal input filters upon receiving the Hs-mode master code, enabling faster data transfer without compromising signal integrity on properly terminated buses.
Does the TMP100NA/250 have a dedicated ALERT pin like the TMP101?
No, the TMP100NA/250 does not include a dedicated ALERT pin. However, it fully supports the SMBus Alert command (00011001): when the OS bit is set and temperature exceeds THIGH, the device acknowledges the command and returns its slave address on SDA-enabling software-based alert polling.
How many unique I²C addresses can be configured on the TMP100NA/250?
The TMP100NA/250 provides two address pins (ADD0 and ADD1), allowing eight unique 7-bit slave addresses (1001000 to 1001111). Each pin accepts GND, V+, or floating states, and their logic levels are latched at the first I²C communication after power-up or reset.
What is the conversion time for the TMP100NA/250 at 12-bit resolution?
At 12-bit resolution, the TMP100NA/250 requires 320 ms (typical) to 600 ms (maximum) for a full temperature conversion. This interval is programmable via the Configuration Register and scales inversely with resolution: 9-bit completes in 40 ms (typ), enabling rapid thermal sampling.
Can the TMP100NA/250 operate reliably at –55°C?
Yes, the TMP100NA/250 is fully specified and tested from –55°C to +125°C. Its ±1°C typical accuracy and robust ΔΣ ADC architecture ensure consistent performance across this extended range, making it suitable for outdoor infrastructure, automotive engine compartments, and aerospace subsystems.
TMP100NA/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -55°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 11 b
- Features:
- One-Shot, Output Switch, Programmable Resolution, Shutdown Mode, Standby Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- -25°C ~ 85°C (-55°C ~ 125°C)
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-23-6
TMP100NA/250 FAQ
1.How can I place an order for TMP100NA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP100NA/250 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 TMP100NA/250 reliable?
The price and inventory of TMP100NA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP100NA/250 is usually 5 days.
3.What payment methods are accepted for TMP100NA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP100NA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP100NA/250?
TMP100NA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP100NA/250 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 TMP100NA/250?
For technical support, including TMP100NA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP100NA/250 requirements.
6.How does Aetrix verify that TMP100NA/250 is sourced from the original manufacturer or authorized distributors?
All TMP100NA/250 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 TMP100NA/250 meets industry standards.
7.What is the process for return or replacement of TMP100NA/250?
All TMP100NA/250 units undergo pre-shipment inspection (PSI). If there is an issue with TMP100NA/250, 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 TMP100NA/250 part is unused and in its original packaging.
Return procedure for TMP100NA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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