UCC3957MTR-4

Overview

The UCC3957MTR-4 is a specialized power management IC designed as a protector circuit for three-to-four cell lithium-ion battery packs. It integrates protection functions to ensure safe operation by monitoring critical parameters such as voltage and current. The device operates within a specified supply voltage range suitable for multi-cell configurations, providing reliable control over charging and discharging cycles. Packaged in an SOT-23 format with tape-and-reel delivery, it supports automated assembly processes for high-volume manufacturing applications requiring compact footprints.

Feature Summary

• Integrated protection logic for multi-cell lithium-ion battery systems
• Supports configuration for three or four series-connected cells
• Designed for precise monitoring of pack voltage and current conditions

Applications

• Portable electronic devices utilizing multi-cell lithium-ion batteries
• Power tool battery packs requiring integrated protection
• Uninterruptible power supply (UPS) modules for consumer electronics

Procurement Notes

Verify the specific suffix MTR-4 corresponds to the required tape-and-reel packaging and pinout configuration. Confirm that the component meets all relevant safety standards for lithium-ion battery protection in your target market. Ensure compatibility with your board layout regarding the SOT-23 package dimensions and thermal requirements before finalizing procurement orders.

Selection Notes

Select this component when designing systems specifically requiring protection for three or four series lithium-ion cells. It is suitable for applications needing a compact solution with integrated monitoring capabilities. Consider the operating temperature range and supply voltage constraints to ensure proper functionality within the intended environmental conditions of the end product.

Part Context

This part belongs to Texas Instruments' portfolio of specialized power management integrated circuits. It falls under the category of battery protection controllers, distinct from general-purpose regulators or gate drivers. The UCC3957 series is engineered to address the specific safety and reliability needs of modern portable energy storage solutions.

Replacement Considerations

Direct substitutes may include other TI parts like the UCC3957M-4 or UCC3957MTR-2, depending on whether reel or tube packaging is preferred. Verify functional equivalence regarding cell count support and protection thresholds before substitution.