This design handbook introduces how to design a charger for solar cells.
The text introduces the market need for efficient solar-powered devices with rechargeable batteries. It explains that the LT3652 is a multi-chemistry 2A battery charger specifically designed to extract maximum power from solar panels by regulating input voltage when illumination levels are low.
The document details the operation of the input voltage regulation loop, which reduces charge current if the panel voltage falls below a programmed level. It includes design equations for calculating component values and provides a complete design example for a 2A, solar-powered, 2-cell Li-Ion battery charger.
The LT3652 is a 2A battery charger.