Datasheet Summary
Features
Battery Charger n Standalone USB Charger n Up to 950mA Charge Current Programmable via
Single Resistor n HPWR Input Selects 20% or 100% of Programmed
Charge Current n NTC Input for Temperature Qualified Charging n Internal Timer Termination n Bad Battery Detection
Switching Regulators (Buck and Buck-Boost) n Up to 400mA Output Current per Regulator n 2.25MHz Constant-Frequency Operation n Power Saving Burst Mode® Operation n Low Profile, 20-Lead, 3mm × 3mm QFN Package
APPLICATIONS n SD/Flash-Based MP3 Players n Low Power Handheld Applications
Linear USB Battery Charger with Buck and
Buck-Boost Regulators
DESCRIPTION
The LTC®3558 is a USB battery charger with dual high...