LM3658SD-A/NOPB

The LM3658SD-A/NOPB from Texas Instruments is a versatile, single-chip charger IC specifically designed for handheld and portable applications. It efficiently charges and maintains single-cell Lithium-Ion/Polymer batteries, drawing power from either an AC wall adapter or a USB power source with automatic source selection.

This IC supports a maximum charge current of 1A and operates within an input voltage range of 4.5V to 6V, with an absolute maximum of 6.5V. The battery charge voltage is precisely regulated at 4.2V. Key features include thermistor monitoring for battery temperature, IC thermal regulation, and built-in safety timers. It also offers continuous over-current and temperature protection, near-depleted battery pre-conditioning, and a sleep mode with ultra-low quiescent current.

The LM3658SD-A/NOPB utilizes a linear control topology and a standalone (RC-Settable) interface. It is housed in a 10-WSON (3x3 mm) package with an exposed pad for enhanced thermal performance, and it is designed for surface mount applications. The operating temperature range is -40°C to 85°C.

Additional functionalities include charge status indication, maintenance mode with automatic recharge, and on-board Kelvin-sensing for precise termination accuracy. The device is suitable for applications requiring reliable battery management from dual power sources.