MAX17050X+T10

Introduction to MAX17050X+T10
- What it is: Maxim/Analog Devices’ MAX17050X is a single‑cell Li‑ion/Li‑polymer battery fuel gauge. It estimates state of charge (SOC) and remaining capacity for compact battery-powered devices.
- How it works: It measures cell voltage, current (via an external sense resistor), and temperature, then uses a coulomb‑counting/flag-based algorithm to derive SOC, runtime estimates, and health indicators. It interfaces to a host MCU over I2C/SMBus.
- Packaging: The “+T10” suffix denotes the 10‑pin TDFN package option, suitable for small, space‑constrained boards.
- Typical use: Wearables, IoT sensors, and other portable devices needing accurate, low‑power SOC readouts with a small footprint.
- Benefits: Low quiescent current, compact packaging, automatic calibration, and straightforward external components (sense resistor, decoupling caps).
Note: Check the exact X variant features in the datasheet for your revision, as options can vary by part.

Equivalent products (single‑cell Li‑ion fuel gauges) from other vendors:
- TI: BQ27441-G1/G2 (ModelGauge-based coulomb counter)
- Renesas: ISL94202 / ISL94212
- STMicroelectronics: STC3100
Within Maxim’s own ModelGauge family, close alternatives include: MAX17043 / MAX17044 (older ModelGauge variants).
Note: exact features, pinouts, and voltage ranges differ; verify against your design requirements.

Key features of MAX17050X+T10:
- ModelGauge m5 fuel gauge for high-accuracy SOC estimation
- Reports State of Charge (SOC), time-to-empty, remaining capacity, and average current
- Monitors pack voltage, current (via external sense resistor), and temperature
- I2C interface (SMBus-compatible) for host communication and configuration
- Low quiescent current with fast wake and power-saving modes
- Wide supply range and operating temperature (-40°C to +85°C)
- Programmable update rate; interrupt outputs for low SOC or fault conditions
- Auto-calibration and life‑based compensation for drift over time
- External Rsense resistor required for current measurement
- Available in compact T10 package for space‑constrained designs

- Pin count: 10 pins (T10 package).
- Function: Li-ion/Li-poly battery fuel gauge (gas gauge) with coulomb counting; measures voltage, current, and temperature and reports state-of-charge via an I2C-compatible interface to the host.

- Manufacturer: Maxim Integrated (the MAX17050X+T10 is a Maxim device).
- Company type: Maxim is a fabless semiconductor company that designs analog/mixed-signal ICs; it was acquired by Analog Devices in 2021, so the product line is now part of Analog Devices’ portfolio.

MAX17050X+T10 is a Li‑ion/Li‑polymer fuel gauge with ModelGauge, delivering SOC, remaining capacity, and lifetime estimates via I2C for 1–3 cell packs. Applications include:
- Portable consumer electronics (smartphones, tablets, cameras, handheld scanners)
- Wearables and IoT sensors/gateways
- Cordless tools and robotics
- Medical devices powered by Li‑ion packs
- Industrial instruments, backup/power‑management packs and telecom equipment
In short: any battery-powered system needing accurate runtime/SOC data with a small BOM.

MAX17050X+T10 comes in a 10‑pin TDFN package (3×3 mm) with an exposed pad. The “T10” denotes the 10‑pin TDFN option.