MAX11068GUU/V+T

Overview

The MAX11068GUU/V+T is a high-voltage, 12-channel battery monitor IC designed for multi-cell series rechargeable battery packs. It integrates a 12-bit SAR ADC with ±0.25% voltage measurement accuracy and completes a 12-cell scan in 107μs. The device supports up to 31 units cascaded via SMBus/I2C to monitor 372 cells. Key features include 200mA cell balancing, dual temperature sensing, and an integrated 2.5V precision reference. Operating voltage ranges from 6V to 70V with 80V transient tolerance. It functions within -40°C to +105°C.

Feature Summary

• Integrates 12-channel differential voltage measurement with high-precision 12-bit SAR ADC
• Supports cascading of up to 31 devices for extended battery string monitoring
• Includes built-in cell balancing switches capable of delivering up to 200mA current
• Features comprehensive safety mechanisms including overvoltage/undervoltage detection and open-circuit monitoring

Applications

• Electric vehicle (EV) battery management systems
• Hybrid electric vehicle (HEV) battery monitoring
• Multi-cell series energy storage systems
• Industrial battery pack management

Procurement Notes

Verify component authenticity due to discontinued status for new designs. Confirm package integrity as the part uses TSSOP-38. Check RoHS compliance documentation. Ensure supply chain sources are authorized distributors to avoid counterfeits. Validate lot codes against manufacturer records for quality assurance.

Selection Notes

Select this component for applications requiring precise monitoring of high-voltage series battery strings. It is suitable where cost reduction through integration is prioritized. Consider its AEC-Q100 Grade 2 qualification for automotive environments. Evaluate system complexity reduction benefits from its integrated linear regulator and reference.

Part Context

This part belongs to the Maxim Integrated MAX11068 family, now under Analog Devices. It is specifically engineered for smart battery monitoring systems. The device simplifies design by integrating analog front-end, ADC, and communication interfaces. It targets markets demanding reliable, high-accuracy battery state estimation in harsh electrical environments.

Replacement Considerations

Public confirmed substitute part numbers are not available. The device is marked as not recommended for new designs. Existing designs may require redesign if sourcing becomes unavailable. No direct pin-to-pin replacements are documented in public sources.