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Texas Instruments TMP103BYFFT
- Part No.:
- TMP103BYFFT
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 4-UFBGA, DSBGA
- Datasheet:
-
TMP103BYFFT.pdf
- Description:
- SENSOR DIGITAL -40C-125C 4DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:14,511
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Product details
Overview
TMP103BYFFT from Texas Instruments is a low-power, digital temperature sensor in a 4-ball DSBGA (WCSP) package, delivering ±1°C typical accuracy from –10°C to 100°C, 8-bit resolution, and I²C/SMBus-compatible two-wire interface - used for thermal monitoring in SSDs, notebooks, and telecom equipment.
For engineers reviewing the TMP103BYFFT datasheet, TMP103BYFFT pinout, TMP103BYFFT application, or TMP103BYFFT equivalent, key selection criteria include its 1.4–3.6 V supply range, 3-μA active quiescent current at 0.25 Hz, 26-ms conversion time, and support for Multiple Device Access (MDA) on shared buses with up to eight devices.
Technical Context
The TMP103BYFFT implements a diode-based on-die temperature sensing element with sigma-delta A/D conversion, integrated oscillator, and register-mapped control logic. Its serial interface supports both standard I²C (up to 400 kHz) and high-speed mode (up to 3.4 MHz), with built-in Schmitt triggers and spike suppression on SDA/SCL.
It operates in three functional modes: shutdown (≤1 μA), one-shot (single 26-ms conversion on demand), and continuous conversion (configurable at 0.25/1/4/8 Hz via CR1/CR0 bits). The device features a programmable temperature watchdog with THIGH/TLOW registers and latchable flag bits (FH/FL/LC).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.4 V to 3.6 V - enables direct integration into battery-powered and low-voltage embedded systems without level-shifting. |
| Accuracy | ±1°C typical (–10°C to 100°C) - sufficient for thermal throttling and system health monitoring in consumer electronics. |
| Resolution | 1°C (8-bit output) - provides discrete zone-level temperature discrimination without oversampling overhead. |
| Quiescent Current | 3 μA active (0.25 Hz), 1 μA shutdown - extends battery life in always-on thermal sensing nodes. |
| Conversion Time | 26 ms typical - allows rapid response to thermal transients while maintaining low average power. |
| Interface | I²C/SMBus-compatible two-wire - ensures interoperability with standard microcontroller peripherals and existing bus infrastructure. |
| Operating Range | –40°C to 125°C - supports industrial-grade operation in storage, compute, and communications platforms. |
Pinout & Package
Package: 4-ball DSBGA (YFF), 0.76 mm × 0.76 mm, 0.35 mm pitch, bottom-side solder connections.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | V+ | Positive supply input - requires local 0.01-μF bypass capacitor per TI recommendation. |
| A2 | GND | Ground reference - must be connected directly to PCB ground plane for thermal and noise stability. |
| B1 | SDA | Open-drain bidirectional data line - requires external pullup resistor; supports MDA read/write broadcast. |
| B2 | SCL | Open-drain clock input - driven by master only; includes internal Schmitt trigger for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Multiple Device Access (MDA) | Enables global read/write commands across up to eight TMP103 devices on one bus - reduces host firmware overhead and bus traffic by >75% vs. individual addressing. |
| Configurable Conversion Rate | Four selectable rates (0.25/1/4/8 Hz) via CR1/CR0 bits - balances responsiveness and power for varying thermal dynamics. |
| Temperature Watchdog | Programmable THIGH/TLOW thresholds with latchable FH/FL flags - supports autonomous overtemperature alerts without host polling. |
| One-Shot Mode | Triggered from shutdown state to perform single 26-ms measurement - ideal for wake-on-thermal-event architectures in ultra-low-power systems. |
| ESD Robustness | ±2000 V HBM, ±1000 V CDM - meets JEDEC standards for reliable handling in automated assembly and field environments. |
Applications
| SSD Thermal Management | Notebook System Monitoring |
|---|---|
Use Scenario: Real-time die temperature tracking inside NVMe SSD controllers during sustained write workloads. IC Role / Device Role / Timing Role: Localized on-die temperature sensor providing 1°C-resolution feedback to host controller for dynamic throttling. Use Value: Prevents NAND flash degradation and maintains QoS by enabling precise, low-latency thermal intervention before critical thresholds are exceeded. | Use Scenario: Distributed thermal sensing across CPU, GPU, and battery zones in thin-and-light notebook designs. IC Role / Device Role / Timing Role: Slave node on shared I²C bus, reporting zone-specific temperatures at 1 Hz for fan speed and performance scaling decisions. Use Value: Enables coordinated thermal management across subsystems using a single bus, reducing BOM count and PCB routing complexity. |
| Telecom Baseband Unit | Set-Top Box Power Supply Monitoring |
Use Scenario: Monitoring FPGA and power converter junction temperatures in outdoor small-cell baseband units exposed to wide ambient swings. IC Role / Device Role / Timing Role: High-reliability temperature node operating continuously at 4 Hz in –40°C to 125°C environment. Use Value: Ensures long-term reliability under thermal stress by triggering graceful derating before silicon limits are breached. | Use Scenario: Detecting abnormal heating in DC-DC converter stages of cable/satellite set-top boxes during extended playback. IC Role / Device Role / Timing Role: Shutdown-mode sensor activated every 5 seconds via one-shot command to verify safe operating temperature. Use Value: Achieves <1 μA average current draw while still providing periodic safety verification - critical for Energy Star compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP102DBVR | Same 6-pin SOT-23 package; 0.5°C accuracy (–25°C to 85°C); no MDA support; 10-μA active IQ. | Limited to single-device point sensing; lacks multi-zone broadcast capability. | Choose when board space permits larger package and MDA is unnecessary. |
| LM75BIMM/NOPB | SOIC-8 package; ±2°C accuracy; 250-μA active IQ; no one-shot or watchdog features. | Designed for basic ambient sensing; not optimized for ultra-low-power or zone-coordinated systems. | Choose for cost-sensitive, non-battery applications where feature set is secondary. |
Compared with TMP103BYFFT, TMP102DBVR offers higher accuracy in a different package but omits MDA and ultra-low-power modes, while LM75BIMM/NOPB provides legacy compatibility at significantly higher current and reduced functionality - making TMP103BYFFT uniquely suited for compact, multi-node, battery-aware thermal systems.
Availability
TMP103BYFFT is available at Aetrix Electronics and suitable for SSD thermal management, notebook system monitoring, and telecom baseband unit applications requiring stable component supply and long-lifecycle support.
Supply support for TMP103BYFFT 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, embedded processing, and connectivity technologies, with leadership in precision sensing and low-power design.
The TMP103 product line delivers ultra-compact, low-quiescent-current digital temperature sensors for space-constrained, multi-zone thermal monitoring in portable and infrastructure electronics.
FAQ
What is the absolute maximum supply voltage rating for TMP103BYFFT?
The absolute maximum supply voltage for TMP103BYFFT is 4 V. Exceeding this value may cause permanent damage. The recommended operating range remains 1.4 V to 3.6 V per the datasheet's Recommended Operating Conditions table. Operation above 3.6 V is not guaranteed and voids parametric specifications - always maintain V+ within the specified window for reliable TMP103BYFFT performance.
Does TMP103BYFFT support I²C fast-mode plus (1 MHz) operation?
No, TMP103BYFFT supports I²C fast mode up to 400 kHz and high-speed mode up to 3.4 MHz, but not Fast-Mode Plus (1 MHz). Its timing parameters - including t(LOW), t(HIGH), and tR - are validated only for ≤400 kHz (standard/fast) and 3.4 MHz (high-speed) conditions. Using 1 MHz violates the specified timing requirements and risks communication failure - design systems to operate within the documented TMP103BYFFT frequency limits.
How many TMP103BYFFT devices can share the same I²C bus?
Up to eight TMP103BYFFT devices can share a single I²C bus, each assigned a unique slave address (1110000 to 1110111) corresponding to TMP103A through TMP103H variants. The TMP103BYFFT itself is the TMP103B variant (address 1110001), enabling deterministic addressing and MDA broadcast operations without collision - confirmed in Table 2 of the SBOS545D datasheet.
What is the thermal resistance (RθJA) of the TMP103BYFFT package?
The junction-to-ambient thermal resistance (RθJA) for TMP103BYFFT in its YFF (4-ball DSBGA) package is 160°C/W, as measured per JEDEC JESD51 standards. This value assumes standard 2-layer PCB layout with minimal copper; actual RθJA improves with enhanced thermal vias and ground plane area - critical for interpreting self-heating effects during high-duty-cycle operation of the TMP103BYFFT.
Can TMP103BYFFT operate without external pullup resistors on SDA and SCL?
No, TMP103BYFFT requires external pullup resistors on both SDA and SCL lines, as its pins are open-drain. The datasheet explicitly states "SCL and SDA pins require pullup resistors" and recommends values based on bus capacitance and speed (e.g., 2.2 kΩ for 100 kHz, 1 kΩ for 400 kHz). Omitting pullups will prevent I²C communication - proper termination is mandatory for reliable TMP103BYFFT bus operation.
TMP103BYFFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 4-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 1.4V ~ 3.6V
- Resolution:
- 8 b
- Features:
- One-Shot, Shutdown Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- -10°C ~ 100°C (-40°C ~ 125°C)
- Operating Temperature:
- -55°C ~ 150°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 4-DSBGA (1x1)
TMP103BYFFT FAQ
1.How can I place an order for TMP103BYFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP103BYFFT 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 TMP103BYFFT reliable?
The price and inventory of TMP103BYFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP103BYFFT is usually 5 days.
3.What payment methods are accepted for TMP103BYFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP103BYFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP103BYFFT?
TMP103BYFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP103BYFFT 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 TMP103BYFFT?
For technical support, including TMP103BYFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP103BYFFT requirements.
6.How does Aetrix verify that TMP103BYFFT is sourced from the original manufacturer or authorized distributors?
All TMP103BYFFT 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 TMP103BYFFT meets industry standards.
7.What is the process for return or replacement of TMP103BYFFT?
All TMP103BYFFT units undergo pre-shipment inspection (PSI). If there is an issue with TMP103BYFFT, 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 TMP103BYFFT part is unused and in its original packaging.
Return procedure for TMP103BYFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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