National Semiconductor introduces a 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 termination accuracy of 1.5% 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. 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. It requires few external components and features integrated PowerFETs, a current sensor, reverse-blocking protection and thermal regulation for advanced battery protection. Advanced safety features include LED status indicators, safety timers and continuous temperature monitoring of the battery.
National Semiconductor Corporation
National Semiconductor Corporation
2900 Semiconductor Drive
Santa Clara, CA, 95051
