Texas Instruments TMAG5273A2QDBVR

Overview

TMAG5273A2QDBVR from Texas Instruments is a low-power linear 3D Hall-effect sensor IC with integrated X/Y/Z magnetic sensing, 12-bit ADC, on-chip CORDIC angle engine, I²C interface (up to 1 MHz), and embedded temperature sensor. It operates from 1.7V–3.6V across –40°C to +125°C and supports ±133 mT / ±266 mT magnetic ranges for precise position and motion detection in space-constrained industrial and consumer systems.

For engineers reviewing the TMAG5273A2QDBVR datasheet, TMAG5273A2QDBVR pinout, TMAG5273A2QDBVR application, or TMAG5273A2QDBVR equivalent, key selection considerations include its ultra-low 5 nA sleep current, configurable 1–32× averaging for noise reduction, interrupt-driven wake-up via INT or SCL, factory-programmed I²C address (0x6A write), and support for off-axis 360° angular position calculation using two selected axes.

Technical Context

The TMAG5273A2QDBVR integrates three orthogonal Hall elements with shared 12-bit sigma-delta ADC, programmable gain/offset correction, and real-time CORDIC-based angle computation. Its power management supports four functional modes: standby (450 µA), active (2.3 mA), wake-up & sleep (1.0–160 µA depending on interval), and deep sleep (5 nA).

It features dual-magnetic-range configuration (±133 mT / ±266 mT per axis), temperature-compensated sensitivity (±5% error, ±5% drift), RMS magnetic noise as low as 9 µT (Z-axis, 32× avg), and I²C Fast Mode Plus timing compliance (1 MHz, CRC-protected frames) - all implemented in a single-die SOT-23-6 package with internal test pin (GND/TEST).

Key Specifications

Pinout & Package

TMAG5273A2QDBVR is housed in a 6-pin SOT-23 (DBV) package measuring 2.9 mm × 2.8 mm, optimized for PCB area-constrained designs including smart thermostats and electronic locks.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3D Hall-effect sensor applications.

Compared with TMAG5273A2QDBVR, TMAG5170AHQDGKR offers superior resolution but sacrifices I²C compatibility and on-chip angle computation, while MLX90393ELW-ABA-000-TU provides automotive qualification at the cost of higher sleep current and no CORDIC engine - making TMAG5273A2QDBVR optimal for cost-sensitive, battery-powered industrial IoT endpoints requiring intelligent angle output.

Availability

TMAG5273A2QDBVR is available at Aetrix Electronics and suitable for electricity meters, smart thermostats, and electronic smart locks requiring stable component supply, long-term lifecycle support, and guaranteed traceability for industrial OEM programs.

Supply support for TMAG5273A2QDBVR 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 sensing technologies with decades of Hall-effect sensor innovation.

The TMAG5273 product line delivers highly integrated, ultra-low-power 3D magnetic sensing for industrial and consumer motion control - designed specifically to replace mechanical switches, potentiometers, and discrete sensor arrays in space- and power-constrained systems.

FAQ

What is the factory-programmed I²C address for TMAG5273A2QDBVR?

The TMAG5273A2QDBVR has a factory-programmed 7-bit I²C address of 0x35, corresponding to write address 0x6A and read address 0x6B. This address is fixed at power-up and can be changed via the I2C_ADDRESS register after initialization. The device supports four default addresses across its A1/B1/C1/D1 and A2/B2/C2/D2 variants, with TMAG5273A2QDBVR assigned to the A2 group.

Does TMAG5273A2QDBVR support both on-axis and off-axis angle measurement?

Yes, TMAG5273A2QDBVR supports full 360° angle measurement for both on-axis and off-axis topologies using its integrated CORDIC engine. It calculates angular position from any two user-selected axes (X-Y, Y-Z, or X-Z), with typical angle error of ±0.5° for X-Y and ±1.0° for Y-Z or X-Z configurations at 25°C and 32× averaging.

How does the wake-up and sleep (W&S) mode operate in TMAG5273A2QDBVR?

In W&S mode, TMAG5273A2QDBVR autonomously cycles between sleep and brief wake-up intervals defined by the SLEEPTIME register (1 ms to 5 s). During each wake-up, it performs configured magnetic/temperature conversions and asserts the INT pin if thresholds are crossed. Average current ranges from 1.0 µA (5 s sleep, 1.8 V) to 160 µA (1 ms sleep, 3.3 V), enabling flexible trade-offs between responsiveness and battery life.

Can TMAG5273A2QDBVR measure temperature independently of magnetic sensing?

Yes, TMAG5273A2QDBVR includes a dedicated integrated temperature sensor with ±0.4°C RMS noise (no averaging) and 58 LSB/°C resolution. It can be read independently via I²C registers (TEMP_RESULT_H/L) without activating magnetic channels, supporting use cases like thermal budget monitoring or magnet temperature compensation lookup tables.

What is the purpose of the TEST pin (Pin 3) on TMAG5273A2QDBVR?

Pin 3 (GND/TEST) is a TI factory test pin that must be connected to system ground in all production applications. Leaving it floating or driving it high may cause undefined behavior, increased leakage, or latch-up. It is not intended for user configuration or signal routing - its sole function is internal wafer-level testing during manufacturing.