Battery monitor for multi-chemistry packs
The Texas Instruments BQ35100PW is a battery monitor IC designed for multi-chemisty cells, communicating over an I2C interface. It sits in a 14-TSSOP package, surface-mount, and covers an industrial temperature range of -40°C to 85°C. This part is suited for portable equipment, backup systems, and energy-storage applications where you need to track state-of-charge across lithium-ion, LiFePO4, or other chemistries without swapping the monitor.
What the ratings mean for fit
The multi-chemistry support is the headline feature — you can use this monitor with lithium-ion, lithium iron phosphate, or other cell types without changing the IC, which simplifies BOM management across product lines. The I2C interface keeps wiring to two lines (SDA/SCL), saving board space and GPIO on the host controller. The -40°C to 85°C range covers most industrial enclosures and outdoor telecom cabinets; if your application lives under the hood or in a freezer, you'll need a wider-temperature part.
Package and rework considerations
The 14-TSSOP package has a 4.40 mm body width. The Tube shipping medium means you get the parts in a rigid tube, not on a reel.
Lifecycle and sourcing
The BQ35100PW is listed as Active and ROHS3 compliant.