UCC3911DP-3

Overview

The UCC3911DP-3 is a battery protection integrated circuit designed for two-cell lithium-ion or lithium-polymer battery packs. Manufactured by Texas Instruments, it operates within a temperature range of -20°C to +70°C and utilizes a 16-pin SOIC surface-mount package measuring 9.90 x 3.90 mm with a height of 1.50 mm. The device provides comprehensive fault protection against over-voltage, under-voltage, and short-circuit conditions to ensure safe operation of the connected energy storage cells.

Feature Summary

• Integrated protection logic for dual-cell lithium-based battery architectures
• Automatic detection and response to over-voltage and under-voltage anomalies
• Short-circuit fault monitoring capabilities for enhanced safety

Applications

• Protection circuits for portable electronic devices using two-cell lithium-ion batteries
• Safety management in consumer electronics powered by lithium-polymer packs
• Battery management systems requiring over/under voltage and short-circuit isolation

Procurement Notes

Verify the specific suffix designation when sourcing this component, as variants such as UCC3911DP-4 are documented as obsolete. Confirm current availability status through authorized distributors, as production lifecycle changes may affect supply continuity. Ensure the ordering part number matches the required functional specification for two-cell protection applications.

Selection Notes

Select this component for designs requiring dedicated hardware protection for two-series lithium cells. It is suitable for applications needing reliable over-voltage, under-voltage, and short-circuit defense without complex external control logic. Consider the 16-SOIC package constraints and the specified operating temperature range during thermal and mechanical layout planning.

Part Context

This device belongs to the UCC3911 family of battery protection ICs from Texas Instruments. The family includes variants like the UCC3911DP-1G4 and UCC3911DPTR-3G4, all serving similar protective functions for lithium-ion and polymer chemistries. These components are categorized under power management integrated circuits specifically for battery protection.

Replacement Considerations

Public documentation confirms BQ294702DSGR as a substitute for the UCC3911DP-4 variant. Verify functional equivalence and pin compatibility before replacing the UCC3911DP-3 with alternative parts from the same manufacturer or other vendors.