My Inquiry
My Account
Texas Instruments TMP275AIDGKRG4
- Part No.:
- TMP275AIDGKRG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TMP275AIDGKRG4.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,030
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TMP275AIDGKRG4 from Texas Instruments is a ±0.5°C accurate digital temperature sensor IC with 12-bit ΔΣ ADC, I²C/SMBus interface, and programmable resolution (9–12 bits), operating from 2.7 V to 5.5 V in industrial temperature range (−40°C to +125°C); used for thermal protection in power supplies, servers, and battery management systems.
For engineers reviewing the TMP275AIDGKRG4 datasheet, TMP275AIDGKRG4 pinout, TMP275AIDGKRG4 application, or TMP275AIDGKRG4 equivalent, key selection criteria include accuracy over −20°C to 100°C, standby current ≤0.1 µA, ALERT pin functionality, 8 configurable I²C addresses, and VSSOP-8 package compatibility with LM75/TMP75 footprints.
Technical Context
The TMP275AIDGKRG4 integrates a precision bandgap-based temperature sensing element, a 12-bit sigma-delta ADC, on-chip oscillator, and fully compliant I²C/SMBus slave interface with open-drain SDA/SCL/ALERT pins. It supports fast-mode (400 kHz) and high-speed mode (2.38 MHz) timing, plus SMBus Alert protocol and General Call commands.
Its register map includes Temperature, Configuration, THIGH, TLOW, and Pointer registers; resolution is user-selectable via CONFIG[1:0], and functional modes include Continuous Conversion, Shutdown, One-Shot, Comparator (TM=0), and Interrupt (TM=1), with ALERT assertion based on programmable thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±0.5°C max from −20°C to 100°C - enables precise thermal margining without system-level calibration |
| Resolution | 9 to 12 bits user-selectable - trade-off between conversion time (27.5 ms at 9-bit) and precision (0.0625°C at 12-bit) |
| Supply Voltage | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V logic domains and mixed-voltage systems |
| Quiescent Current | 50 µA typical in active mode - minimizes load on low-power supply rails during continuous monitoring |
| Shutdown Current | 0.1 µA typical - extends battery life in portable or energy-harvested applications |
| I²C Address Options | 8 unique addresses via A0/A1/A2 pins - allows multi-sensor thermal mapping on single bus without address conflict |
| Operating Temp Range | −40°C to +125°C - qualified for industrial, telecom, and automotive under-hood adjacent environments |
Pinout & Package
VSSOP-8 package (3.00 mm × 3.00 mm), thin profile, lead-free, RoHS-compliant; pin-compatible with LM75, TMP75, TMP175, and TMP275 family SOIC-8 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SDA | Serial Data I/O | Open-drain bidirectional data line; requires external pullup; supports I²C/SMBus read/write sequences |
| 2 - SCL | Serial Clock Input | Open-drain clock input; master-generated; filters suppress noise and enable reliable high-speed operation |
| 3 - ALERT | Overtemperature Output | Open-drain interrupt/alert signal; asserts when temp ≥ THIGH or ≤ TLOW; configurable as comparator or interrupt mode |
| 4 - GND | Ground Reference | Analog and digital ground return; must be low-impedance connection to minimize measurement error |
| 5 - A2 | I²C Address Select | Digital input; sets MSB of 7-bit slave address (1001xxx); tied HIGH/LOW to configure one of eight device addresses |
| 6 - A1 | I²C Address Select | Digital input; sets middle bit of slave address; combined with A0/A2 determines full 7-bit address |
| 7 - A0 | I²C Address Select | Digital input; sets LSB of slave address; enables up to eight identical TMP275AIDGKRG4 sensors on same bus |
| 8 - V+ | Power Supply | Single 2.7–5.5 V supply; powers internal ADC, logic, and interface; no separate analog/digital rail required |
Key Features
| Feature | Design Value |
|---|---|
| Factory-calibrated accuracy | ±0.5°C max over −20°C to 100°C - eliminates need for per-unit calibration in production test |
| Programmable resolution | 9–12 bits via CONFIG register - enables optimization of conversion speed vs. thermal resolution per application need |
| SMBus Alert support | Full protocol compliance including arbitration-aware response - simplifies multi-sensor fault detection in server/industrial backplanes |
| Time-out protection | 54 ms SCL/SDA hold-time reset - prevents bus lockup due to firmware hang or noise-induced bus contention |
| No power-up sequencing | Two-wire pullups may be enabled before V+ - eases PCB layout and reduces BOM count by eliminating sequencing circuitry |
Applications
| Power-Supply Thermal Monitoring | Server Blade Temperature Management |
|---|---|
Use Scenario: Real-time junction temperature tracking of DC-DC converters and VRMs in telecom power modules. IC Role / Device Role / Timing Role: Digital temperature sensor providing calibrated 12-bit readings every 220 ms (12-bit mode) to host microcontroller via I²C. Use Value: Enables dynamic derating and fan control to maintain safe operating area and extend component lifetime under transient load conditions. |
Use Scenario: Distributed thermal sensing across CPU, memory, and PCIe slot zones in 1U rack-mount servers. IC Role / Device Role / Timing Role: I²C slave sensor with ALERT pin wired to baseboard management controller (BMC) interrupt line. Use Value: Reduces BMC polling overhead and latency in overtemperature response; 8-address capability supports ≥8 sensors per bus segment. |
| Battery Pack Safety Monitoring | Office Equipment Thermal Protection |
Use Scenario: Cell-level temperature supervision in Li-ion battery packs for UPS and portable medical devices. IC Role / Device Role / Timing Role: Low-power temperature monitor operating in One-Shot mode triggered by fuel gauge MCU every 5 seconds. Use Value: Achieves <0.5 µA average current draw while maintaining ±0.5°C accuracy - critical for multi-year battery shelf life. |
Use Scenario: Overheat protection in laser printers, copiers, and multifunction peripherals with fuser assemblies. IC Role / Device Role / Timing Role: Comparator-mode sensor driving thermal cutoff relay via ALERT output when fuser exceeds 200°C threshold. Use Value: Eliminates external comparator and reference; direct hardware shutdown improves safety response time versus software-only solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP75AIDGKR | Same pinout, register map, and accuracy (±0.5°C), but lower max operating temperature (−40°C to +125°C same); identical VSSOP-8 package | No difference in thermal protection or monitoring use cases; functionally interchangeable where ambient does not exceed 125°C | Select TMP75AIDGKR only if cost sensitivity outweighs long-term drift spec (TMP275 specifies ±0.0625°C long-term drift at 150°C stress) |
| LMT70YFQR | Higher accuracy (±0.1°C at 25°C), smaller DSBGA-4 package, but no ALERT pin and only 2 I²C addresses; requires external bypass cap | Not suitable for interrupt-driven thermal shutdown; better for precision analog compensation or space-constrained PCBs without alert logic | Choose LMT70YFQR only when sub-0.2°C absolute accuracy is mandatory and ALERT functionality is unused |
Compared with TMP75AIDGKR, TMP275AIDGKRG4 offers verified long-term drift performance and identical interface behavior; versus LMT70YFQR, it trades raw accuracy for integrated alerting, address flexibility, and proven robustness in noisy industrial buses.
Availability
TMP275AIDGKRG4 is available at Aetrix Electronics and suitable for power-supply temperature monitoring, server thermal management, and battery pack safety applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across production lots.
Supply support for TMP275AIDGKRG4 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.
The TMP275AIDGKRG4 belongs to TI's precision analog temperature sensor product line, designed specifically for high-accuracy, low-power, I²C-based thermal monitoring in space- and cost-constrained embedded systems.
FAQ
What is the maximum accuracy specification of the TMP275AIDGKRG4 over its full operating range?
The TMP275AIDGKRG4 guarantees ±1.0°C maximum accuracy from −40°C to +125°C, with tighter ±0.5°C maximum accuracy specified from −20°C to +100°C. This performance is factory-calibrated and does not require system-level correction. The TMP275AIDGKRG4 achieves this using an on-chip bandgap reference and trimmed ΔΣ ADC architecture, making it suitable for applications where thermal margining must meet strict industrial specifications.
Does the TMP275AIDGKRG4 support high-speed I²C mode, and what is the maximum clock frequency?
Yes, the TMP275AIDGKRG4 supports high-speed I²C mode up to 2.38 MHz, in addition to standard (100 kHz) and fast-mode (400 kHz) operation. It automatically adapts input/output filtering upon receipt of the Hs-mode master code, enabling faster temperature reads in time-critical applications. The TMP275AIDGKRG4 maintains full SMBus and I²C protocol compliance across all supported speeds, with timing parameters validated per JEDEC standards.
How many I²C addresses can be configured on a single TMP275AIDGKRG4 device?
A single TMP275AIDGKRG4 device supports eight unique I²C slave addresses, selected via the logic states of its three address pins (A0, A1, A2). Each combination maps to a distinct 7-bit address in the 1001xxx format (e.g., 1001000 to 1001111). This allows up to eight TMP275AIDGKRG4 sensors to coexist on the same I²C bus without address collision - essential for multi-zone thermal monitoring in servers or industrial controllers.
What is the function of the ALERT pin on the TMP275AIDGKRG4, and how is it configured?
The ALERT pin on the TMP275AIDGKRG4 is an open-drain output that signals temperature threshold violations. It operates in two modes: Comparator Mode (TM = 0), where ALERT stays asserted until temperature falls below TLOW; and Interrupt Mode (TM = 1), where ALERT clears upon reading the temperature register. Thresholds are set via THIGH and TLOW registers, and the pin supports SMBus Alert protocol for multi-device arbitration. This dual-mode flexibility makes the TMP275AIDGKRG4 adaptable to both hardware-triggered shutdown and software-polling architectures.
Is the TMP275AIDGKRG4 pin-compatible with other TI temperature sensors like the LM75?
Yes, the TMP275AIDGKRG4 is pin- and register-compatible with the LM75, TMP75, TMP75B, and TMP175 devices in both SOIC-8 and VSSOP-8 packages. Its pinout matches industry-standard LM75 form factor (SDA, SCL, ALERT, GND, A2, A1, A0, V+), and its register map is identical - enabling drop-in replacement without PCB or firmware changes. This compatibility simplifies migration to higher accuracy (±0.5°C vs. ±2°C for LM75) while preserving existing board layouts and driver code.
TMP275AIDGKRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- SMBus
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 11 b
- Features:
- One-Shot, Output Switch, Programmable Resolution, Shutdown Mode, Standby Mode
- Accuracy - Highest (Lowest):
- ±0.5°C (±1.5°C)
- Test Condition:
- -20°C ~ 100°C (25°C ~ 100°C)
- Operating Temperature:
- -55°C ~ 127°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-VSSOP
TMP275AIDGKRG4 FAQ
1.How can I place an order for TMP275AIDGKRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP275AIDGKRG4 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 TMP275AIDGKRG4 reliable?
The price and inventory of TMP275AIDGKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP275AIDGKRG4 is usually 5 days.
3.What payment methods are accepted for TMP275AIDGKRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP275AIDGKRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP275AIDGKRG4?
TMP275AIDGKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP275AIDGKRG4 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 TMP275AIDGKRG4?
For technical support, including TMP275AIDGKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP275AIDGKRG4 requirements.
6.How does Aetrix verify that TMP275AIDGKRG4 is sourced from the original manufacturer or authorized distributors?
All TMP275AIDGKRG4 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 TMP275AIDGKRG4 meets industry standards.
7.What is the process for return or replacement of TMP275AIDGKRG4?
All TMP275AIDGKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TMP275AIDGKRG4, 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 TMP275AIDGKRG4 part is unused and in its original packaging.
Return procedure for TMP275AIDGKRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TMP275AIDGKRG4 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…
