LM3658SDX

Battery Chargers Overview

The LM3658SDX/NOPB is a dual-source battery charger IC designed for single-cell lithium-ion and lithium-polymer batteries. It supports input from USB or AC adapters within a 4.35 V to 6 V supply range, delivering up to 1 A of programmable charging current. The device terminates charging at 4.2 V with high accuracy. Packaged in a compact 10-WSON (3x3 mm) surface-mount format, it operates reliably across an industrial temperature range of -40°C to +85°C.

Battery Chargers Feature Summary

• Dual-source capability allowing automatic selection between USB and AC adapter inputs
• Integrated thermal regulation to manage heat during high-current charging cycles
• Programmable constant-current charging via external resistor configuration
• Status output pins indicating specific battery charge states

Battery Chargers Applications

• Portable digital assistants (PDAs)
• MP3 players and audio devices
• Digital cameras
• Mobile phones

Battery Chargers Procurement Notes

Verify the suffix NOPB indicates lead-free compliance when sourcing. Confirm the SDX designation corresponds to the reel packaging variant rather than cut tape. Ensure the application circuit matches the required input voltage range of 4.35 V to 6 V. Check for any specific wire base metal qualification updates from the manufacturer before finalizing procurement.

Battery Chargers Selection Notes

Select this component for applications requiring flexible power source integration without manual switching logic. It is suitable for designs needing precise termination accuracy to extend battery lifespan. Consider the 10-WSON package constraints for PCB layout. Verify that the external programming resistors align with the desired charging current limits for the target battery chemistry.

Battery Chargers Part Context

This part belongs to the LM3658 family of battery management ICs originally developed by National Semiconductor and transferred to Texas Instruments. It serves as a dedicated solution for portable electronics requiring safe and efficient charging from multiple common power sources. The device integrates necessary protection features to ensure reliable operation in consumer handheld devices.

Battery Chargers Replacement Considerations

LM3658SD-B/NOPB is a direct substitute for the discontinued LM3658SD-B variant.