AD7280AWBSTZ

AD7280AWBSTZ is an Analog Devices Li‑ion battery fuel gauge IC. It uses Impedance Track technology plus coulomb counting to deliver accurate state of charge (SoC) and remaining capacity for multi‑cell Li‑ion/Li‑poly packs. The device monitors pack voltage, current (via a sense resistor), and temperature, performs internal compensation, and provides health/diagnostic information through a serial interface to a host MCU (SPI‑like). It is designed for portable electronics and battery packs in applications such as consumer devices, tools, and power systems that require reliable charge estimation and fault detection. The WBSTZ suffix indicates the specific packaging/shipping option (RoHS-compliant, tape-and-reel) and the package type used for this part. For exact cell-count support, interface details, and package dimensions, consult the AD7280A datasheet and the “Product Fact” for the WBSTZ variant.

AD7280AWBSTZ is a Li‑ion battery fuel gauge/gauge-like IC. There isn’t a direct drop‑in pin-for-pin equivalent. Functional cross‑references from other vendors include:
- TI: BQ40Z60, BQ27441
- Renesas: ISL94202, ISL94203
- Maxim: MAX17043, MAX17044
For exact cross‑reference (package, voltage, cells, I2C/SMBus), use the vendor/distributor cross-reference tool or share your target package and spec.

AD7280AWBSTZ is a multi‑cell Li‑ion battery monitor (gas gauge) with:
- Measures individual cell voltages across a series-connected pack and pack current via an external sense resistor
- Coulomb counter for state‑of‑charge (SOC) estimation
- Temperature input for battery temp monitoring
- Serial interface (SPI/I2C‑compatible) for data readout and configuration
- Programmable fault and alarm thresholds (UV/OV, OC) with status/alert reporting
- Diagnostic and fault reporting capabilities
- Low quiescent current with power‑saving modes
- Integrated calibration/accuracy features for robust battery management
(Packaging varies by version; refer to datasheet for exact package details.)

- Pin count: 28 pins
- Function: Multi-cell Li‑ion battery monitor (gas gauge) with Coulomb counting; provides cell voltages and pack current measurements with a SPI-like serial interface to a host MCU.

Analog Devices, Inc. (ADI) is the manufacturer of the AD7280AWBSTZ. ADI is a multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits, used across automotive, industrial, communications, and consumer electronics.

AD7280AWBSTZ is an analog devices Li‑ion battery gauge IC. Key application areas include:
- Battery management systems (BMS) and smart battery packs for portable devices
- Consumer electronics requiring accurate state-of-charge (SOC) and remaining capacity readings
- Cordless power tools and other battery-powered equipment
- Electric bicycles, scooters, and small electric vehicles
- Uninterruptible power supplies (UPS) and energy-storage systems
- Telecom and industrial equipment with onboard battery backup
- Medical devices needing reliable SOC monitoring
It provides coulomb counting with voltage/current/temperature sensing and communicates over SMBus/I2C to a host controller.

It uses a 28-pin lead-frame chip-scale package (LFCSP), RoHS-compliant.