ADBMS1818ASWAZ-R7

Overview

The ADBMS1818ASWAZ-R7 is an 18-cell battery monitor IC from Analog Devices, designed for multi-chemistry battery stacks. It measures up to 18 series-connected cells with a total measurement error of less than 3.0 mV and supports a cell voltage range of 0 V to 5 V. The device features a daisy-chain interface for efficient communication in high-cell-count applications. Packaged in a 64-LQFP-EP (10x10 mm) format, it serves as a core component for battery management systems requiring precise monitoring.

Feature Summary

• Supports measurement of up to 18 series-connected battery cells
• Features a daisy-chain interface for simplified system connectivity
• Provides high accuracy with total measurement error under 3.0 mV
• Compatible with various battery chemistries via 0 V to 5 V input range

Applications

• Multi-cell lithium-ion battery pack monitoring
• Electric vehicle (EV) battery management systems
• Energy storage system (ESS) stack supervision
• Industrial equipment battery backup units

Procurement Notes

Verify the specific suffix 'R7' indicates tape-and-reel packaging when ordering. Confirm the 64-LQFP-EP package dimensions match your PCB footprint requirements. Ensure compatibility with your system's daisy-chain protocol implementation. Check current availability status as supply may be limited for this specific variant.

Selection Notes

Select this part for applications requiring monitoring of exactly 18 series cells. Consider the ADBMS1818 family if lower cell counts are sufficient. Evaluate the daisy-chain interface against SPI alternatives based on pin count constraints. Verify thermal performance within the LQFP-EP package for your specific power dissipation needs.

Part Context

This component belongs to the ADBMS1818 family of battery monitors from Analog Devices. It is distinct from evaluation boards like EVAL-ADBMS1818Z, which are development tools rather than production components. The ASWAZ-R7 designation specifies the commercial grade, surface-mount package, and reel packaging configuration.

Replacement Considerations

Direct substitutes include other parts within the ADBMS1818 family, such as the ADBMS1818CSWAZ-R7. Verify pinout and functional equivalence before swapping. No cross-family replacements are confirmed without detailed electrical comparison.