MAX6789TB+T

Overview

The MAX6789TB+T is a battery management integrated circuit designed for multi-cell lithium-ion and lithium-polymer battery packs. It functions as a quad, 1%-accurate battery monitor capable of measuring individual cell voltages with high precision. The device operates within a supply voltage range of 1.2 V to 5.5 V and supports communication via standard I2C interfaces. Packaged in a TQFN-EP-16 form factor, it is rated for industrial temperatures from -40°C to +85°C.

Feature Summary

• Provides precise monitoring of up to four series-connected battery cells
• Ensures accurate state-of-charge estimation through 1% measurement accuracy
• Supports standard I2C serial interface for system integration

Applications

• Portable electronic devices requiring multi-cell battery monitoring
• Laptop and tablet computer battery pack management systems
• Medical equipment utilizing rechargeable battery arrays

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Availability is restricted, and sourcing may require checking secondary markets or authorized distributors for remaining stock. Verify authenticity and condition carefully when procuring end-of-life inventory.

Selection Notes

Select this part for applications requiring high-precision monitoring of four-series cell configurations. Ensure the system design accommodates the specific TQFN-EP-16 package dimensions and thermal requirements. Confirm that the host microcontroller supports the necessary I2C protocol for data retrieval.

Part Context

The MAX6789 belongs to a family of battery monitors focused on safety and accuracy for portable electronics. It complements other power management solutions by providing detailed cell-level data essential for balancing algorithms and protection logic in complex battery architectures.

Replacement Considerations

The MAX6783TEB+T is a confirmed substitute within the same product family offering similar quad-cell monitoring capabilities.