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Texas Instruments SN0312100DBVR
- Part No.:
- SN0312100DBVR
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- SOT-23-6
- Datasheet:
-
SN0312100DBVR.pdf
- Description:
- SENSOR DIGITAL -55C-125C SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,092
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Product details
Overview
SN0312100DBVR from Texas Instruments is a digital temperature sensor IC with I²C/SMBus interface, 12-bit ΔΣ ADC, ±1°C accuracy from –55°C to 125°C, 2.7–5.5 V supply, and 6-pin SOT-23 package - used for thermal protection in power supplies, battery management, and embedded systems.
For engineers reviewing the SN0312100DBVR datasheet, SN0312100DBVR pinout, SN0312100DBVR application, or SN0312100DBVR equivalent, key selection criteria include resolution configurability (9–12 bits), alert functionality, low quiescent current (45 µA active / 0.1 µA standby), and SMBus-compatible serial interface timing up to 400 kHz.
Technical Context
The SN0312100DBVR implements an on-die diode-based temperature sensing element with a 12-bit delta-sigma ADC and integrated oscillator, delivering digitized temperature data directly to the I²C bus without external signal conditioning. Its internal register map includes Temperature, Configuration, THIGH/TLOW limit, and Pointer registers.
It operates as a slave-only device on two-wire buses, supporting Fast Mode (400 kHz) and High-Speed Mode (2 MHz), with open-drain SDA/SCL requiring external pull-ups. The device features programmable shutdown, one-shot conversion, and configurable alert polarity and fault queue behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 5.5 V - supports direct connection to common logic rails including 3.3 V and 5 V systems. |
| Temperature Range | −55°C to +125°C - specified for industrial, automotive under-hood, and extended-environment applications. |
| Accuracy | ±1°C typical (−55°C to +125°C) - enables NTC thermistor replacement without calibration or lookup tables. |
| Resolution | User-selectable 9–12 bits (0.0625°C at 12-bit) - allows trade-off between precision and conversion time (320–600 ms). |
| Quiescent Current | 45 µA active, 0.1 µA standby - suitable for battery-powered and energy-sensitive IoT endpoints. |
| Interface | I²C/SMBus compatible, open-drain SDA/SCL - interoperable with standard microcontroller peripherals and bus controllers. |
| Package | SOT-23-6 (DBV), 2.90 mm × 1.60 mm - surface-mount compatible with high-density PCB layouts and automated assembly. |
Pinout & Package
SOT-23-6 (DBV) package: ultra-small outline transistor, 6-pin, single-row, gull-wing leads, JEDEC MO-178AC compliant, body size 2.90 mm × 1.60 mm × 1.45 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SCL | Serial clock input | Open-drain input requiring external pull-up; synchronizes I²C data transfers at up to 400 kHz. |
| 2: GND | Ground reference | Primary thermal path via lead frame; must be connected to system ground plane for accurate thermal measurement. |
| 3: ADD1 | Address select input | Configures I²C slave address (TMP100 variant); floating/low/high sets unique bus address among up to eight devices. |
| 4: V+ | Power supply input | Accepts 2.7–5.5 V; internal LDO regulates core circuitry; bypass capacitor recommended near pin. |
| 5: ADD0 | Address select input | Second address bit for TMP100; combined with ADD1 determines full 7-bit slave address per Table 2. |
| 6: SDA | Serial data I/O | Open-drain bidirectional line; transmits/receives register data, requires external pull-up resistor. |
Key Features
| Feature | Design Value |
|---|---|
| ΔΣ ADC with on-chip temperature sensor | Eliminates need for external thermistors or RTDs; measures die temperature directly with linear response. |
| User-configurable resolution (9–12 bits) | Enables optimization of measurement precision vs. conversion latency (e.g., 9-bit = 40 ms, 12-bit = 600 ms). |
| Programmable alert output (ALERT pin) | Provides hardware interrupt signaling when temperature exceeds THIGH or falls below TLOW thresholds. |
| Shutdown mode with 0.1 µA standby current | Extends battery life in portable devices by disabling ADC and oscillator while retaining I²C accessibility. |
| SMBus Alert protocol support | Allows multi-device bus arbitration and master-initiated status polling without dedicated interrupt lines. |
Applications
| Power-Supply Thermal Monitoring | Computer Peripheral Protection |
|---|---|
Use Scenario: Real-time monitoring of DC-DC converter MOSFET and inductor temperature in server PSUs. IC Role / Device Role / Timing Role: Digital temperature sensor providing I²C-readable die temperature with ±1°C accuracy over −40°C to +125°C. Use Value: Enables dynamic fan control and overtemperature shutdown before thermal runaway occurs. |
Use Scenario: Thermal safeguarding of HDD enclosures and GPU riser cards in desktop workstations. IC Role / Device Role / Timing Role: SMBus slave device triggering ALERT when enclosure ambient exceeds 70°C. Use Value: Prevents data corruption and mechanical stress by initiating thermal throttling before critical junction temperatures are reached. |
| Notebook Battery Management | Office Equipment HVAC Interface |
Use Scenario: Integration into laptop battery packs to monitor cell temperature during charge/discharge cycles. IC Role / Device Role / Timing Role: Low-power I²C temperature node with 0.1 µA shutdown current and 12-bit resolution for precise thermal profiling. Use Value: Supports JEITA-compliant charging profiles and prevents lithium-ion thermal excursion during fast charging. |
Use Scenario: Embedded sensing in smart thermostats and air handler units for ambient air temperature feedback. IC Role / Device Role / Timing Role: Primary temperature acquisition element interfacing directly to MCU via I²C with configurable alert thresholds. Use Value: Delivers stable, drift-free readings across wide operating range (−55°C to +125°C), eliminating recalibration needs in field-deployed units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP101DBVR | Single ADD0 pin, dedicated ALERT output, no ADD1 - supports up to 3 devices per bus vs. 8 for SN0312100DBVR. | Lacks second address pin; better suited for compact designs where only 1–3 sensors share a bus and hardware alert is mandatory. | Select TMP101DBVR when ALERT pin functionality is required and bus node count ≤3; otherwise SN0312100DBVR offers greater scalability. |
| LM75BIMM/NOPB | 9-bit fixed resolution, ±2°C accuracy (−25°C to +100°C), no programmable shutdown, same SOT-23-8 footprint (not pin-compatible). | Lower precision and narrower temp range; lacks alert configuration flexibility and one-shot mode. | Choose LM75BIMM/NOPB only for cost-sensitive, non-critical ambient sensing where ±2°C tolerance is acceptable. |
Compared with TMP101DBVR and LM75BIMM/NOPB, SN0312100DBVR provides superior address flexibility (8-node bus), finer resolution (up to 12-bit), tighter accuracy (±1°C full-range), and lower standby current - making it optimal for scalable, precision thermal management in space-constrained industrial and computing systems.
Availability
SN0312100DBVR is available at Aetrix Electronics and suitable for power-supply thermal monitoring, notebook battery management, and office equipment HVAC interface requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SN0312100DBVR 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, designing analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.
SN0312100DBVR belongs to TI's TMP10x family of digital temperature sensors, engineered specifically for replacing NTC/PTC thermistors in thermal protection and closed-loop thermal management systems with minimal design overhead.
FAQ
What is the operating temperature range of the SN0312100DBVR?
The SN0312100DBVR is specified to operate from −55°C to +125°C, with typical accuracy of ±1°C across that full range. This makes SN0312100DBVR suitable for harsh environments including industrial motor drives, automotive under-hood modules, and telecom infrastructure equipment where wide thermal margins are required.
Does SN0312100DBVR support I²C Fast Mode and High-Speed Mode?
Yes, SN0312100DBVR supports I²C Fast Mode (up to 400 kHz) and High-Speed Mode (up to 2 MHz). It complies with SMBus 2.0 timing requirements and uses open-drain SDA/SCL pins requiring external pull-up resistors. The device automatically adjusts internal filtering when the Hs-mode master code is detected.
How many SN0312100DBVR devices can share the same I²C bus?
Up to eight SN0312100DBVR devices can share a single I²C bus using the two address pins (ADD0 and ADD1), which configure seven unique 7-bit slave addresses. Each pin accepts GND, V+, or floating states, enabling flexible multi-sensor thermal mapping without address conflicts.
What is the lowest power state achievable with SN0312100DBVR?
The lowest power state of SN0312100DBVR is Shutdown Mode, drawing just 0.1 µA typical supply current. In this state, the ADC and oscillator are disabled, but the I²C interface remains responsive - allowing wake-up via register write to initiate a one-shot conversion without full power-up delay.
Can SN0312100DBVR generate hardware interrupts for temperature threshold violations?
No - SN0312100DBVR does not include a dedicated ALERT pin. Unlike the TMP101 variant, SN0312100DBVR (a TMP100 variant) relies on software polling of the OS/ALERT bit or SMBus Alert command responses. Hardware interrupt capability requires TMP101DBVR or similar variants with physical ALERT output.
SN0312100DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 12 b
- Features:
- One-Shot, 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
SN0312100DBVR FAQ
1.How can I place an order for SN0312100DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN0312100DBVR 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 SN0312100DBVR reliable?
The price and inventory of SN0312100DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN0312100DBVR is usually 5 days.
3.What payment methods are accepted for SN0312100DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN0312100DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN0312100DBVR?
SN0312100DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN0312100DBVR 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 SN0312100DBVR?
For technical support, including SN0312100DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN0312100DBVR requirements.
6.How does Aetrix verify that SN0312100DBVR is sourced from the original manufacturer or authorized distributors?
All SN0312100DBVR 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 SN0312100DBVR meets industry standards.
7.What is the process for return or replacement of SN0312100DBVR?
All SN0312100DBVR units undergo pre-shipment inspection (PSI). If there is an issue with SN0312100DBVR, 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 SN0312100DBVR part is unused and in its original packaging.
Return procedure for SN0312100DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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