LTC6811IG-1#3ZZTRPBF

Overview

The LTC6811IG-1#3ZZTRPBF is a 12-channel multicell battery stack monitor manufactured by Analog Devices Inc. It measures up to 12 series-connected cells with a maximum total measurement error of 1.2mV and a cell voltage range of 0V to 5V. The device operates on a supply voltage of 11V to 55V, drawing 550uA during operation and as low as 4μA in sleep mode. It features an isoSPI interface for daisy-chain communication and includes passive cell balancing. The component is housed in a 48-pin SSOP package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Supports daisy-chaining multiple devices via the isoSPI interface for monitoring extensive battery stacks
• Provides integrated passive cell balancing with programmable timing control
• Includes a built-in 5V regulator and five general-purpose I/O 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 #3ZZTRPBF against official Analog Devices documentation to confirm tape-and-reel packaging and RoHS compliance status. Ensure the ordering information matches the exact part number required for your bill of materials. Cross-reference the manufacturer's latest datasheet to validate any recent product changes or obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring precise monitoring of up to 12 series-connected cells. The isoSPI interface is suitable for environments demanding high noise immunity and long-distance communication without external isolators. Consider the 48-pin SSOP package constraints and the 11V to 55V operating voltage range to ensure compatibility with the target battery stack architecture.

Part Context

This part belongs to the LTC681x family of battery monitors from Analog Devices. It serves as a direct upgrade path from the LTC6804, offering improved accuracy and integrated balancing capabilities. The device is designed for automotive and industrial applications where reliability and precision are critical for battery health management.

Replacement Considerations

The LTC6811IG-1#PBF is a pin-compatible alternative available in tube packaging. Verify that the packaging difference does not impact automated assembly processes. No other direct functional substitutes are documented in the provided reference material.