MAX1666VEEP+

Overview

The MAX1666VEEP+ is a battery protection integrated circuit designed for lithium-ion battery packs containing three series-connected cells. Manufactured by Analog Devices Inc./Maxim Integrated, this component provides comprehensive protection against overvoltage, undervoltage, and short-circuit conditions. It operates within an extended temperature range of -40°C to +85°C and utilizes a 20-pin QSOP package. The device monitors cell voltages to ensure safe operation and disconnects the battery from the load or charger when fault conditions are detected, thereby preserving battery integrity and system safety.

Feature Summary

• Provides multi-cell voltage monitoring for three-series lithium-ion configurations
• Automatically disconnects battery during overvoltage, undervoltage, or short-circuit events
• Supports safe charging and discharging cycles through precise voltage threshold detection

Applications

• Protection circuits for portable electronic devices with 3S lithium-ion batteries
• Battery management systems in consumer electronics requiring cell balancing and fault isolation
• Industrial equipment utilizing multi-cell lithium-ion power sources

Procurement Notes

Verify component authenticity through authorized distributors as the part may be discontinued. Confirm package type matches design requirements. Check for RoHS compliance status if environmental regulations apply. Ensure supply chain stability due to potential end-of-life status. Validate datasheet revisions for any parameter updates before final integration.

Selection Notes

Select this component for applications requiring dedicated hardware-based protection for three-series lithium-ion cells. Consider the 20-pin QSOP package constraints for PCB layout. Evaluate thermal performance within the specified operating temperature range. Compare against alternative battery protection ICs if higher channel counts or different packaging options are needed.

Part Context

This component belongs to the MAX1666 family of battery protection devices from Maxim Integrated, now part of Analog Devices. These ICs are engineered specifically for safeguarding multi-cell lithium-ion battery packs in portable applications. The family offers reliable fault detection and isolation capabilities essential for maintaining battery health and preventing hazardous conditions in consumer and industrial electronics.

Replacement Considerations

Public confirmed substitute part numbers: None identified.