This Low Dropout Voltage (LDO) solar charge controller is a variation of the previously posted 12V LDO controller. It is optimized for charging a 6V lead-acid battery with a 9V solar panel. Minimum voltage drop is less than 1V. It uses a simple differential amplifier and series P channel MOSFET linear regulator. Voltage output is adjustable.
A 5.1V zener in parallel would prevent the voltage from exceeding the 5.5V limit of the Photon’s regulator input, but the solar panel may generate enough current to overheat the zener depending on the wattage rating of the zener and the Voltage-Amps curve of the solar panel.
Simplified Solar Powered Battery Charger Schematic applicaTions n VIN Range: 6V to 80V n VBAT Range: 1.3V to 80V n Single Inductor Allows VIN Above, Below, or Equal to VBAT n Automatic MPPT for Solar Powered Charging n Automatic Temperature Compensation n No Software or Firmware Development Required n Operation from Solar Panel or DC Supply The solar cells within a solar panel produce direct current electricity from sunlight. The solar panels consist of several solar cells which contain layers of photovoltaic material, usually silicon. When sunlight shines on the cells they create an electric field across the layers.
Customized Solar cell panel, please contact us: [email protected] If you want to inquiry or place an order , Please send the inquiry or purchase order to us by email or fax, including model number, quantity and delivery address. 12V 5w solar panel datasheet, cross reference, circuit and application notes in pdf format. 12V 5w solar panel datasheet, cross reference, circuit and application notes in pdf format.