Texas Instruments TMP103GYFFT

Overview

TMP103GYFFT 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 space-constrained, battery-powered systems such as SSDs and handheld devices.

For engineers reviewing the TMP103GYFFT datasheet, TMP103GYFFT pinout, TMP103GYFFT application, or TMP103GYFFT equivalent, key selection criteria include its 1.4 V–3.6 V supply range, 3 µA active quiescent current at 0.25 Hz conversion rate, 26 ms conversion time, MDA (Multiple Device Access) support for up to eight parallel sensors, and 0.76 mm × 0.76 mm footprint - all critical for multi-zone thermal management in portable electronics.

Technical Context

The TMP103GYFFT implements an on-die diode-based temperature sensing element with successive-approximation ADC, integrated oscillator, and configurable register map (Configuration, Temperature, THIGH/TLOW limit registers). Its serial interface supports both standard I²C/SMBus protocols and proprietary MDA commands for global read/write operations across multiple devices on one bus.

It operates in three functional modes: Shutdown (≤1 µA), One-Shot (single conversion triggered from shutdown), and Continuous Conversion (configurable at 0.25/1/4/8 Hz via CR1/CR0 bits), with automatic power gating between conversions to minimize average current draw in continuous mode.

Key Specifications

Pinout & Package

Package: 4-ball DSBGA (YFF), 0.76 mm × 0.76 mm, 0.4 mm pitch - ultra-compact footprint optimized for high-density mobile and embedded PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital temperature sensor applications.

Compared with LM75BIMM/NOPB and STTS751-2DMR, the TMP103GYFFT uniquely combines WCSP miniaturization, MDA-enabled bus efficiency, and sub-µA shutdown - making it the only option among the three that simultaneously satisfies space, power, and multi-zone scalability requirements in modern portable electronics.

Availability

TMP103GYFFT is available at Aetrix Electronics and suitable for SSD thermal management, notebook system monitoring, handset battery protection, telecom baseband units, and set-top box thermal regulation requiring stable component supply across production lifecycles.

Supply support for TMP103GYFFT 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, low-power design, and industrial-grade reliability.

The TMP103 product line was engineered specifically for ultra-low-power, multi-node thermal monitoring in space-constrained portable and embedded systems - prioritizing die-size efficiency, bus-level scalability, and robustness across extended temperature ranges.

FAQ

What is the package type and size of the TMP103GYFFT?

The TMP103GYFFT uses a 4-ball DSBGA (WCSP) package designated YFF, with nominal body dimensions of 0.76 mm × 0.76 mm and 0.4 mm ball pitch. This wafer-level chip-scale package enables direct die attachment to PCBs with minimal footprint - critical for mobile SSDs and thin-profile consumer devices where board area is at a premium. The package is specified in TI's SBOS545D datasheet, section 12.

Does the TMP103GYFFT support I²C fast-mode or high-speed mode?

Yes, the TMP103GYFFT supports both I²C fast-mode (up to 400 kHz) and high-speed mode (up to 3.4 MHz when V+ > 1.7 V). Its SCL and SDA pins feature integrated Schmitt triggers and spike suppression filters to maintain signal integrity at higher frequencies. Timing parameters including t(LOW), t(HIGH), and t(R) are fully specified in Section 6.6 of the SBOS545D datasheet.

How many TMP103GYFFT devices can be connected on a single I²C bus?

Up to eight TMP103GYFFT devices can operate in parallel on one I²C bus using Multiple Device Access (MDA) commands. Each variant (TMP103A–TMP103H) has a unique 7-bit slave address (1110000 to 1110111), allowing individual or global communication. This architecture eliminates sequential polling and reduces bus overhead by up to 87% in multi-zone thermal systems.

What is the typical conversion time and power consumption of the TMP103GYFFT in continuous mode?

The TMP103GYFFT has a typical conversion time of 26 ms and draws 3 µA quiescent current at the default 0.25 Hz conversion rate. In continuous mode at 8 Hz, active current rises to 85 µA (at 3.4 MHz SCL), but average current remains low due to automatic power-down between conversions. All values are measured at TA = 25°C and V+ = 1.8 V per Section 6.5 of the SBOS545D datasheet.

Can the TMP103GYFFT be used for battery-powered applications with strict energy budgets?

Yes - the TMP103GYFFT is explicitly designed for ultra-low-power operation, drawing just 1 µA in shutdown mode and 3 µA at 0.25 Hz continuous conversion. Its One-Shot mode enables single measurements from shutdown with ~30 µA average current over burst intervals, making it ideal for coin-cell or energy-harvesting applications like wireless sensor nodes and portable medical monitors.