MAX14920ECB+T

Overview

The MAX14920ECB+T is a high-accuracy battery monitor IC designed for multi-cell battery packs. It supports 12 to 16 series-connected cells and features an integrated analog front-end with a 12-bit ADC. The device operates within a supply voltage range of 2.7V to 5.25V and functions across a temperature range of -40°C to +85°C. It utilizes a 64-pin TQFP package with an exposed pad for thermal management.

Feature Summary

• High-accuracy measurement capability for multi-cell battery stacks
• Integrated analog front-end with multiplexed sampling
• Supports I2C interface for digital communication
• Includes over-temperature, over-voltage, and under-voltage fault protection

Applications

• Laptop and tablet battery packs
• Power tool batteries
• Medical equipment battery systems
• Portable industrial instrumentation

Procurement Notes

Verify the exact suffix 'ECB+T' against the manufacturer's current datasheet to confirm pinout and electrical specifications. Ensure the component meets RoHS compliance requirements if mandated by your assembly process. Cross-reference the 64-TQFP-EP package dimensions with your PCB footprint library to guarantee mechanical compatibility during surface-mount placement.

Selection Notes

Select this component when monitoring 12 to 16 series cells requiring high precision. It is suitable for applications needing integrated fault detection without external comparators. Consider the 64-pin form factor for board space constraints. Verify that the I2C interface aligns with the host controller's capabilities and that the operating temperature range covers the intended environmental conditions.

Part Context

This part belongs to the Maxim Integrated battery management family, now under Analog Devices. It complements charger controllers by providing accurate cell voltage and temperature data. The device simplifies system design by integrating the analog front-end and ADC, reducing the need for external signal conditioning components in multi-cell battery architectures.

Replacement Considerations

Direct substitutes include other MAX149xx series variants with compatible pinouts and functionality. Verify that any replacement maintains the same cell count support and accuracy specifications. Check for package equivalence to ensure mechanical fit without redesigning the PCB layout.