LTC6811HG-2#PBF

Overview

The LTC6811HG-2#PBF is a multicell battery stack monitor manufactured by Analog Devices Inc. It operates within a supply voltage range of 11 V to 55 V and provides an output voltage of 5.7 V. The device is housed in a 48-pin SSOP package designed for surface mount installation. It functions as a battery protection component capable of monitoring multiple cell configurations. The unit weighs 1.389 g and consumes 550 uA of operating power current. It supports development via the DC2260A and DC2259A kits.

Feature Summary

• Supports daisy-chain isoSPI communication for scalable battery stack monitoring
• Provides precise measurement of individual cell voltages within a series stack
• Features integrated isolation to prevent ground loop interference

Applications

• Industrial battery management systems requiring high reliability
• Smart terminal devices with dynamic discharge loads
• Battery stacks monitored via isolated serial interfaces

Procurement Notes

Verify the specific suffix HG-2 against official datasheets to confirm pinout and functional compatibility. Confirm RoHS compliance status through manufacturer documentation. Ensure the SSOP-48 footprint matches the target PCB layout. Validate that the 11 V to 55 V input range aligns with system power requirements. Check availability constraints as distribution may be limited.

Selection Notes

Select this component when designing systems that require accurate monitoring of multiple series-connected cells. The isoSPI interface eliminates the need for external isolators, reducing board complexity. Ensure the design accommodates the 48-pin SSOP package dimensions. Verify thermal performance within the specified -40 C to +125 C operating temperature range. Consider the 550 uA quiescent current impact on overall system efficiency.

Part Context

This part belongs to the LTC6811 series of battery monitors from Analog Devices. The series is engineered for industrial-grade applications where precision and noise immunity are critical. The device integrates ADC functionality with communication capabilities to simplify BMS architecture. It replaces discrete solutions involving separate ADCs and optocouplers.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.