LM3420AM5X-8.4

Battery Chargers Overview

The LM3420AM5X-8.4 is a linear charge controller designed for lithium-ion batteries, specifically configured for two-cell series applications with an output voltage of 8.4 V and a maximum charge current of 15 mA. It operates within a supply voltage range of 4.25 V to 8.4 V and supports temperatures from -40°C to +85°C. The device integrates thermal regulation to limit junction temperature during high-power dissipation. Packaged in a 5-pin SOT-23 (SC-74A) surface-mount case, it includes status indicators for charge completion and fault conditions.

Battery Chargers Feature Summary

• Integrated thermal regulation to manage power dissipation
• Charge status and fault indication outputs
• Linear charging architecture for low-noise operation

Battery Chargers Applications

• Portable medical devices requiring precise low-current charging
• Consumer electronics with limited board space
• Battery-powered instrumentation systems

Battery Chargers Procurement Notes

Verify the component status as this specific suffix variant may be obsolete. Confirm availability through authorized distributors or secondary market suppliers. Ensure the ordering part number matches the required package and temperature grade. Check for alternative active versions if production continuity is critical.

Battery Chargers Selection Notes

Select this component for applications requiring fixed 8.4 V charging for two-series lithium cells. The 15 mA current limit suits small capacity batteries. Consider the SOT-23 package constraints for thermal performance. Verify input voltage compatibility with the system power source before integration.

Battery Chargers Part Context

This part belongs to the LM3420 family of single-cell and multi-cell lithium-ion charge controllers. It shares core functionality with variants like the LM3420M5X-8.2 but differs in output voltage configuration. The family offers various voltage options for 1 to 4 cell configurations.

Battery Chargers Replacement Considerations

Public confirmed substitutes include LM3420AM5-8.4/NOPB. Other variants in the LM3420 series may serve as functional replacements depending on voltage requirements.