LM3658SDX-B

Battery Chargers Overview

The LM3658SDX-B/NOPB is a battery management integrated circuit designed for lithium-ion and lithium-polymer chemistry. It supports dual-source charging from USB or AC adapters, automatically selecting the available power source. The device operates within a supply voltage range of 4.35 V to 6 V and provides a regulated output voltage of 4.2 V. It delivers a programmable constant charging current ranging from 0 A to 1 A. The component is housed in a WSON-10 package with surface mount installation and functions across an operating temperature range of -40°C to +85°C.

Battery Chargers Feature Summary

• Dual-source input capability allowing automatic selection between USB and AC power supplies
• Integrated fault protection mechanisms including overcurrent and overtemperature safeguards
• Supports single-cell lithium-ion and lithium-polymer battery chemistries

Battery Chargers Applications

• Portable electronic devices requiring compact battery charging solutions
• USB-powered consumer electronics
• AC adapter powered portable equipment

Battery Chargers Procurement Notes

Verify the specific suffix designation when ordering, as the base model may have different availability status. Confirm RoHS compliance requirements against the specific part variant, as older revisions may not meet current environmental standards. Ensure the WSON-10 footprint matches the PCB layout design. Cross-reference the datasheet revision to confirm pinout and electrical characteristics align with the system design specifications before finalizing procurement.

Battery Chargers Selection Notes

Select this component for applications requiring a small form factor solution for single-cell lithium batteries. The dual-input feature simplifies power architecture by supporting both USB and wall adapter sources without external switching logic. Consider the thermal performance of the WSON-10 package relative to the maximum 1 A charge current in the intended enclosure environment. Verify that the 4.2 V output voltage matches the target battery cell specifications.

Battery Chargers Part Context

This component belongs to the LM3658 family of battery chargers manufactured by Texas Instruments. The family focuses on compact, efficient charging solutions for portable devices. The LM3658 series integrates necessary power switches and control loops into a single chip, reducing external component count compared to discrete solutions. It is designed for high-volume consumer electronics manufacturing.

Battery Chargers Replacement Considerations

LM3658SD-B/NOPB is listed as a direct replacement for the discontinued LM3658SD-B.