MAX17859GCB/V+TCQP

Overview

The MAX17859 is a high-voltage, multi-cell battery stack monitor designed for series-connected lithium-ion and lithium-polymer battery packs. It supports up to 16 cells in series with individual cell voltage measurement accuracy of ±2mV over the operating temperature range. The device integrates an isolated communication interface allowing daisy-chaining of multiple units for monitoring large battery stacks. It features programmable thresholds for cell overvoltage, undervoltage, and short-circuit detection, providing critical protection functions for electric vehicle and energy storage applications.

Feature Summary

• Supports monitoring of up to 16 series-connected battery cells with high precision
• Integrates isolated bidirectional communication for scalable daisy-chain configurations
• Provides comprehensive fault detection including overvoltage, undervoltage, and short circuits
• Includes internal reference and analog front-end for direct cell voltage sensing

Applications

• Electric vehicle traction battery management systems
• Stationary energy storage system battery monitoring
• Industrial battery pack supervision
• Hybrid electric vehicle power sources

Procurement Notes

Verify the specific suffix GCB/V+TCQP against the manufacturer's current datasheet to confirm package type, temperature grade, and tape-and-reel specifications. Ensure compatibility with your board design regarding isolation requirements and communication protocol support. Cross-reference the ordering part number with official distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when monitoring high-voltage battery stacks requiring precise cell-level voltage data and robust isolation. Consider the maximum number of series cells supported and the required communication speed. Evaluate the thermal performance and package options suitable for your enclosure constraints. Verify that the integrated protection features meet your safety standards without requiring excessive external components.

Part Context

This device belongs to Maxim Integrated's family of high-voltage battery stack monitors. It is engineered for applications demanding reliable monitoring of large series-connected battery arrays. The product line emphasizes scalability through daisy-chaining capabilities and high accuracy to ensure safe operation of complex battery systems in automotive and industrial sectors.

Replacement Considerations

Check for pin-compatible alternatives within the same product family or from other manufacturers offering similar cell count support and isolation ratings. Verify that any substitute maintains the same communication interface and accuracy specifications. Confirm that the replacement part meets all environmental and reliability requirements of the original design.

FAQ

What is the maximum number of cells this monitor can handle?

The MAX17859 can monitor up to 16 series-connected battery cells.

How does the device communicate with the main controller?

It uses an isolated bidirectional communication interface that allows multiple devices to be daisy-chained together.

What types of faults can the device detect?

It detects cell overvoltage, undervoltage, and short-circuit conditions among other potential anomalies.