Multicell battery monitor for extended temperature range
The LTC6804HG-2#TRPBF is a multicell battery monitor IC from the LTC6804 family, designed to measure up to 12 series-connected cells with a total measurement error of less than 1.2 mV. Integrated over/under voltage fault protection monitors each cell independently, reducing the need for external comparators in the analog front end. The I²C and SPI serial interfaces allow daisy-chaining multiple devices for high-voltage stacks without additional isolation components on the data path.
The surface-mount footprint matches the standard 48-FSOP land pattern, with the exposed paddle on the underside providing a low-thermal-resistance path to the PCB ground plane. The -2#TRPBF suffix denotes the SPI daisy-chain interface variant and reel packaging. For I²C-only applications, the -1#TRPBF variant uses the same package and pinout, so a single PCB layout supports both interface options.