National Semiconductor Introduces Tiny USB/AC Battery Charger and Power Management IC for Portable Devices

National Semiconductor Introduces Tiny USB/AC Battery Charger and Power Management IC for Portable Devices

National Semiconductor Corporation (NYSE:NSM), the worldwide leader in power management technology, has introduced a very small, single-chip, dual-input USB/AC battery charger and power management integrated circuit (IC) that safely charges and maintains single-cell Lithium-ion (Li-Ion) and Lithium-Polymer (Li-Polymer) batteries. The LM3658 features a high termination accuracy of 1.5 percent that extends battery life, making it well suited for a variety of portable devices including personal digital assistants, MP3 players, digital still cameras, Internet appliances, instrumentation and smart phones.

Single-chip, Dual-input Battery Charger IC Features High Termination Accuracy and Advanced Safety Features

“Today's portable systems demand short charge times, accurate voltage termination and reliable battery supervisory functions,” said Gianluca Colli, director of integrated system products for National Semiconductor's Portable Power Products Group. “The LM3658 Li-Ion battery charger IC delivers high value to the system designer by offering a cost effective and versatile solution coupled with optimum performance in a tiny 3 mm by 3 mm package.”

The LM3658 charges and maintains a Li-Ion or Li-Polymer battery, drawing power from either a USB or an AC wall adapter and defaulting automatically to the AC wall adapter setting when both power sources are present. The LM3658 requires few external components and features integrated PowerFETs, a current sensor, reverse-blocking protection and thermal regulation for advanced battery protection.