LTC6811IG-2#TRPBF

Overview

The LTC6811IG-2#TRPBF is a 12-channel multicell battery stack monitor manufactured by Analog Devices Inc. It measures up to 12 series-connected cells with a total measurement error of less than 1.2mV and a cell voltage range of 0V to 5V. The device features an isoSPI interface for high-speed, RF-immune communication and supports parallel addressing for multiple devices. It includes passive cell balancing, a 5V regulator, and five general-purpose I/O lines. Operating from 11V to 55V, it utilizes a 48-pin SSOP package.

Feature Summary

• Supports parallel addressing architecture allowing multiple devices to connect independently to the host processor via the isoSPI interface.
• Integrates passive cell balancing circuitry with programmable timing control for each monitored cell.
• Features a built-in 5V regulator and five configurable general-purpose digital I/O or analog input lines.

Applications

• Electric vehicle and hybrid electric vehicle battery management systems
• Grid energy storage applications
• Backup power supply systems

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing this component. Confirm that the -2 variant matches the required parallel addressing topology rather than daisy-chain configurations. Ensure the order quantity aligns with reel specifications provided by the manufacturer. Cross-reference the full part number against official Analog Devices documentation to validate availability status.

Selection Notes

Select the LTC6811IG-2#TRPBF when a parallel addressing scheme is required for the isoSPI bus, distinguishing it from the -1 variant which supports daisy-chaining. This component is suitable for systems requiring independent device addressing without complex wiring topologies. Consider the 48-pin SSOP package constraints and the 11V to 55V operating voltage range during system design integration.

Part Context

This component belongs to the LTC6811 family of multicell battery monitors designed for high-voltage battery stacks. It serves as an upgrade path from previous generations like the LTC6804, offering improved accuracy and integrated isolation capabilities. The device is engineered for automotive and industrial environments, supporting safety standards such as ISO 26262 through its robust monitoring and communication features.

Replacement Considerations

The LTC6811IG-1#PBF is a related variant within the same family but utilizes a daisy-chain isoSPI connection method instead of parallel addressing. Designers must verify if the system architecture supports the specific communication topology required by the replacement part before substitution.