LT3652 solar battery charger
Using the LT3652 solar battery charger designed by Linear Technology can be designed a very simple and efficiency solar battery charger circuit , using few external electronic parts .
LT3652 solar battery charger is a complete monolithic step-down battery charger which operates over a wide range input voltage ( 4.95V to 32V) .
The LT3652 solar battery charger provides a constant-current constant-voltage charge characteristic with maximum charge current externally programmable up to 2A. The desired output voltage can be up to 14.4V , programmed with a resistor divider .
When the LT3652 is powered by a solar panel, the input regulation loop is used to maintain the panel at peak output power.
The LT3652 can be configured to stop charging when charge current falls below 1/10 of the maximum programmed and an new charging cycle starts if the battery voltage falls 2.5% below the programmed float voltage .
When the charging process is over the IC enters in a low-current mode (85μA standby mode ).
The IC can be also programmed to stop the charging process after a desired time .
This charger is ideal for Solar Powered Applications and other applications like : Remote Monitoring Stations ,LiFePO4 (Lithium Phosphate) applications , portable Handheld Instruments and other .
Main features of this battery charger are : Wide Input Voltage Range: 4.95V to 32V , Programmable Charge Rate Up to 2A , User Selectable Termination: C/10 or On-Board , Termination Timer, Resistor Programmable Float Voltage Up to 14.4V , 1MHz Fixed Frequency , 0.5% Float Voltage Reference Accuracy , 5% Charge Current Accuracy , 2.5% C/10 Detection Accuracy .