LTC6806HLW#3ZZPBF

Overview

The LTC6806HLW#3ZZPBF is a multi-cell battery stack monitor designed for high-voltage applications, including fuel cell systems. It supports monitoring of up to twelve series-connected cells with an operating supply voltage range of 4.75 V to 150 V and provides a regulated 5 V output. The device features AEC-Q100 qualification for automotive reliability and utilizes a surface-mount LQFP package.

Feature Summary

• Supports daisy-chain communication for cascading multiple monitors in high-voltage stacks
• Integrated precision measurement circuitry for individual cell voltage monitoring
• Includes internal temperature sensing capabilities for thermal management
• Provides diagnostic flags for open-circuit detection and overvoltage conditions

Applications

• Fuel cell stack monitoring systems
• High-voltage battery management systems
• Industrial energy storage units
• Electric vehicle traction battery packs

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or direct channels. Confirm the specific suffix matches the required package and temperature grade. Request official datasheets and material declarations to ensure compliance with RoHS standards and project specifications before finalizing procurement.

Selection Notes

Select this component when monitoring up to twelve cells within a single unit is sufficient. Ensure the system voltage remains within the 150 V limit. Consider alternative models if higher cell counts are required without additional daisy-chaining. Verify that the LQFP package fits the available PCB footprint and thermal design constraints.

Part Context

This part belongs to the LTC680x family of battery monitors from Analog Devices. These devices are engineered for safety-critical applications requiring accurate state-of-charge estimation. The HLW variant specifically denotes automotive-grade qualification and extended temperature performance suitable for harsh environments.

Replacement Considerations

Direct replacements include other members of the LTC680x family such as the LTC6804 or LTC6805, provided pin compatibility and cell count requirements align. Verify that any substitute maintains the necessary AEC-Q100 certification and voltage isolation ratings.