LTC3550 Datasheet

LTC3550 Dual Input USB/AC Adapter Li-Ion Battery Charger

LTC3550 Dual Input USB/AC Adapter Li-Ion Battery Charger with 600mA Buck Converter FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO U APPLICATIO S ■ Charges Single-Cell Li-Ion Battery from Wall Adapter and USB Inputs Automatic Input Power Detection and Selection Charge Current Programmable Up to 9.

Features

■
■
■
■
■
■
■
■
■
■
■
■
■
■ DESCRIPTIO U APPLICATIO S
■ Charges Single-Cell Li-Ion Battery from Wall Adapter and USB Inputs Automatic Input Power Detection and Selection Charge Current Programmable Up to 950mA from Wall Adapter Input Adjustable Output, 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 .