R5480K278CL-TR

Overview

The R5480K278CL-TR is a single-cell lithium-ion battery protection IC manufactured by Nisshinbo Micro Devices. It operates within a supply voltage range of 1.5 V to 5 V and features an RSENS pin for external current sensing. The device supports Lithium-ion and Lithium Polymer battery types, with a typical output voltage of 4.28 V. It is housed in a DFN-6 surface-mount package and functions across an industrial temperature range from -40 C to +85 C. The quiescent operating current is specified at 4 uA, with a power dissipation rating of 150 mW.

Feature Summary

• Integrates overvoltage, undervoltage, overcurrent, and short-circuit protection functions for single-cell batteries.
• Utilizes an RSENS pin to enable precise external current monitoring and control.
• Designed for low standby power consumption suitable for portable electronic applications.

Applications

• Protection circuits for single-cell Li-ion battery packs
• Power management in portable consumer electronics
• Battery safety systems in IoT devices

Procurement Notes

Verify the specific suffix CL against the official datasheet to confirm the exact threshold parameters and package variant. Ensure compatibility with the target system's voltage levels and thermal requirements. Cross-reference the manufacturer part number directly with Nisshinbo documentation to avoid substitution errors based on distributor generic listings.

Selection Notes

Select this component when a dedicated protection IC with an RSENS pin is required for single-cell lithium-based chemistries. The low quiescent current makes it suitable for applications where standby power efficiency is critical. Confirm that the DFN-6 package fits the PCB layout constraints and that the operating voltage range aligns with the system's power supply.

Part Context

This part belongs to the R5480K series of battery protection ICs from Nisshinbo Micro Devices. The series is designed for compact, high-reliability battery management solutions. The specific model integrates standard protection logic with external sensing capabilities, distinguishing it from internal-sense variants within the broader product family.

Replacement Considerations

Consult the official datasheet for confirmed substitute part numbers within the same series or family. Verify that any alternative component matches the RSENS functionality and protection thresholds exactly before implementation.