U U
LTC3550-1
FEATURES
Dual Input USB/AC Adapter Li-Ion Battery Charger with 600mA Buck Converter
DESCRIPTIO
■ Charges Single-Cell Li-Ion Batteries from Wall Adapter and USB Inputs
■ Automatic Input Power Detection and Selection ■ Charge Current Programmable Up to 950mA from
Wall Adapter Input ■ High Efficiency 600mA Synchronous DC/DC
Converter ■ No External
MOSFET, Sense Resistor or Blocking
Diode Needed ■ Thermal Regulation Maximizes Charge Rate Without
Risk of Overheating* ■ Preset Charge
Voltage with ±0.
6% Accuracy ■ Programmable Charge Current Termination ■ 1.
5MHz Constant Frequency Operation (Step-Down
Converter) ■ 18μA USB Suspend Current in Shutdown ■ Independent “Power Present” S...