What the MAX17205G+00E is and where it fits
The MAX17205G+00E is a ModelGauge™ multi-function controller from Maxim Integrated (now part of Analog Devices) designed for battery fuel-gauging in 2- to 3-cell Li-ion or Li-polymer packs. It communicates over an I²C interface and integrates the fuel-gauge algorithm, voltage/current/temperature measurement, and protection features into a single 14-TDFN (3x3 mm) package with an exposed pad for thermal management. The part is rated for industrial temperature environments (-40°C to 85°C), making it suitable for outdoor telecom, portable instrumentation, medical devices, and power-tool battery packs where accurate state-of-charge reporting is required.
Cell-count flexibility and interface
The controller supports 2 or 3 series cells (2S or 3S configurations), which covers the majority of mid-voltage portable and backup battery packs. The I²C interface allows direct connection to a host MCU without additional level shifters if the host runs at the same logic voltage; the operating temperature range of -40°C to 85°C covers both cold-start and hot-chamber conditions in industrial and outdoor equipment.
Package and mounting
Housed in a 14-WFDFN with exposed pad (3x3 mm body), the MAX17205G+00E is a surface-mount device. The exposed pad must be soldered to a thermal land on the PCB for adequate heat dissipation during high-current charge/discharge cycles.
Lifecycle and sourcing
The MAX17205G+00E is listed as Active in production with ROHS3 compliance.