LM3658SD/NOPB

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

Key electrical specifications include an input voltage range of 4.5V to 6V, with an absolute maximum of 6.5V. The device supports a battery charge voltage of 4.2V and offers a maximum charge current of 1A via AC adapter, with pin-selectable USB charge currents of 100mA or 500mA. It also features an LDO mode with 1A source current when the battery is absent and an AC adapter is connected.

Designed for reliability, the LM3658SD/NOPB includes features like BAT temperature thermistor monitoring, IC thermal regulation, built-in safety timers, and continuous over-current and temperature protection. It operates within a temperature range of -40°C to 85°C.

The component is housed in a compact 10-WSON (3x3 mm) package with an exposed pad, suitable for surface mounting. Its control interface is standalone and RC-settable, and it offers features like near-depleted battery pre-conditioning, sleep mode with ultra-low quiescent current, and maintenance mode with automatic recharge.