LTC6811HG-1#3ZZTRPBF

Overview

The LTC6811HG-1#3ZZTRPBF is a 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 consuming as low as 4μA in sleep mode. It features an isoSPI interface for isolated communication and passive cell balancing. The component is housed in a 48-pin SSOP package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports daisy-chain architecture for monitoring extended high-voltage battery stacks via isoSPI interface
• Provides passive cell balancing with individually programmable PWM duty cycles
• Integrates a board-mounted 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. Confirm availability through authorized distributors as stock levels may be limited. Ensure the ordering information matches the exact pinout and thermal characteristics required for the target PCB design.

Selection Notes

Select this variant when a reel-packaged version of the LTC6811HG-1 is required for automated assembly processes. The HG-1 designation indicates specific performance grades suitable for automotive or industrial environments. Verify that the system architecture supports the isoSPI daisy-chain topology rather than parallel addressing schemes used by other variants.

Part Context

This component belongs to the LTC681x family of battery monitors designed for high-voltage series cell applications. It serves as a direct upgrade path from older generations like the LTC6804, offering improved accuracy and integrated isolation. The part is engineered for safety-critical systems requiring precise voltage monitoring and cell balancing capabilities.

Replacement Considerations

LTC6811HG-1#3ZZPBF is the tube-packaged equivalent of this component. Both parts share identical electrical specifications and functionality; the distinction lies solely in the shipping packaging format.