MAX14921ECS+TW

Analog Front End (AFE) Overview

The MAX14921ECS+TW is a high-accuracy analog front-end (AFE) designed for battery management systems, specifically supporting 12-cell or 16-cell lithium-ion battery packs. It operates within a supply voltage range of 6 V to 65 V and features a low quiescent current of 65 uA. The device is housed in an 80-pin TQFP package with dimensions of 12x12 mm, suitable for surface-mount installation. It functions as a battery protection and monitoring IC, providing precise cell voltage measurement capabilities essential for maintaining battery health and safety in multi-cell configurations.

Analog Front End (AFE) Feature Summary

• Supports 12-cell or 16-cell lithium-ion battery pack monitoring
• Operates on a wide supply voltage range from 6 V to 65 V
• Low power consumption with a quiescent current of 65 uA
• Housed in an 80-lead TQFP (12x12 mm) surface-mount package

Analog Front End (AFE) Applications

• Lithium-ion battery pack monitoring in portable electronics
• Battery management systems requiring high-accuracy cell voltage measurement
• Industrial equipment utilizing multi-cell battery configurations

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'TW' against official Analog Devices documentation to confirm tape-and-reel packaging details, as standard listings often reference tray packaging. Confirm RoHS compliance status through the manufacturer's certification documents. Ensure the source provides valid ECAD models compatible with design tools. Check for any regional distribution restrictions that may affect availability.

Analog Front End (AFE) Selection Notes

Select this component when designing systems requiring accurate monitoring of 12 to 16 series-connected lithium-ion cells. The wide input voltage range up to 65 V makes it suitable for higher voltage battery stacks. Consider the 80-pin TQFP footprint for PCB layout constraints. Verify that the 65 uA quiescent current meets the system's standby power requirements.

Analog Front End (AFE) Part Context

The MAX14921 belongs to the Maxim Integrated battery management family, focusing on high-precision analog front-end solutions. It serves as a critical interface between the battery cells and the system microcontroller, handling voltage sensing and protection logic. The part is categorized under PMIC - Power Management ICs, specifically for battery protection applications.

Analog Front End (AFE) Replacement Considerations

Check for direct pin-to-pin replacements within the MAX14921 family variants. Verify compatibility with existing firmware if switching between different cell count support options. Ensure thermal performance remains adequate given the 1.86 W power dissipation rating.