LM3658
www.ti.com SNVS328E – MAY 2005 – REVISED MARCH 2007 LM3658 Dual Source USB/AC Li Chemistry Charger IC for Portable Applications
Check for Samples: LM3658 FEATURES DESCRIPTION The LM3658 is a single chip charger IC designed for
handheld applications. It can safely charge and
maintain a single cell Li-Ion/Polymer battery operating
from an AC wall adapter or USB power source. Input
power source selection of USB/AC is automatic. With
both power sources present, the AC power source
has priority. Charge current is programmed through
an external resistor when operating from an AC wall
adapter allowing charge currents from 50 mA to 1000
mA. When the battery is charged using USB power,
charge currents of 100 mA or 500 mA are pinselectable. The termination voltage is controlled to
within В±0.35% of 4.2V. 1 2 Integrated Power FETs with Thermal
Regulation
Charges from Either an AC Wall Adapter or
USB Power Source with Automatic Source
Selection
50 mA to 1000 mA Charge Currents Using AC
Wall Adapter
Pin-Selectable USB Charge Currents of 100
mA or 500 mA
LDO Mode with 1A of Source Current is …
