ADBMS6815CSWZ

Overview

The ADBMS6815CSWZ is a multi-cell battery monitor designed for high-voltage battery stacks. It measures up to 12 series-connected cells with a total measurement error of less than 1.5 mV over its lifespan. The device supports a stackable architecture using isoSPI interface for isolated serial communication, allowing multiple units to daisy-chain. It features passive cell balancing with up to 300 mA per channel, a 16-bit ADC with programmable noise filtering, and seven GPIO lines. The part operates in automotive environments, certified to AEC-Q100 standards, and includes a sleep mode with 5.5 μA current consumption.

Feature Summary

• Measures up to 12 series-connected battery cells with low total measurement error
• Supports stackable architecture via isoSPI interface for long-distance communication
• Includes passive cell balancing capability with individual PWM control per channel
• Certified for automotive applications under AEC-Q100 qualification standards

Applications

• Electric and hybrid vehicles
• Backup battery systems
• Grid energy storage
• Large portable power banks

Procurement Notes

Verify the specific suffix 'CSWZ' against official Analog Devices documentation to confirm package type and temperature range. Ensure compatibility with system voltage requirements and communication protocols before integration. Check for obsolescence or limited supply status through authorized distributors.

Selection Notes

Select this component for applications requiring precise monitoring of high-voltage battery strings. Consider the 12-channel limit and passive balancing current when sizing the battery management system. Evaluate the need for isoSPI isolation and stackability if the battery pack exceeds single-device voltage ratings.

Part Context

This device belongs to the ADBMS68xx family of battery monitors from Analog Devices. It is specifically engineered for automotive and industrial battery management systems where high accuracy and reliability are critical. The WFS variant offers additional ASIL D safety features.

Replacement Considerations

Public confirmed substitute part numbers: None identified in provided source material.