DFR0535

        Sunflower: Solar Power Manager SKU: DFR0535 Sunflower Solar Power Series Introduction DFRobot Sunflower is a brand new series focusing on high-efficiency micro to middle power solar energy harvesting and management for makers, renewable energy and IoT projects. All Sunflower modules feature as MPPT ( Maximum Power Point Tracking ) maximizing solar collection efficiency under different sun light, and a variety of battery and power protections. These features provide makers' solar projects efficient and reliable power management. Selection Guide Name Solar Power Manager ★ Solar Power Manager 5V SKU DFR0535 DFR0559 Solar Power Management IC LTC3652 CN3065 Solar Input Voltage 7V ~ 30V 4.4V ~ 6V Maximum Charge Current 2A 900mA Topology DC-DC Buck Linear Regulator Battery 3.7V Lithium Battery 3.7V Lithium Battery MPPT Yes (9V/12V/18V Optional) Yes（Fixed 5V） Battery Protections Over Charge/Over Discharge/Over Current/Reverse Connection Protections Over Charge/Reverse Connection Protections Output Protections Short Circuit/Over Current/Over Heat Protections Short Circuit/Over Current Protections USB Charge IN Yes Yes USB OUT 5V 1.5A 5V 1A Regulated OUT Three Regulated Outputs 3.3V 1A；5V 1.5V；9V/12V 0.5A One Regulated Output 5V 1A Dimension 78.0mm×68.0mm 33.0mm×63.0mm A complete multifunction solar power management module. A small and easy-to-use 5V solar power management module. Applications: Small Solar Street Lamp, Solar Powered Robots For 9V/12V/18V Solar Panels within 20W Applications: Solar Power Bank, Solar Environment Monitors For 5V Solar Panels within 10W Features Introduction DFRobot Sunflower focuses on high-efficiency small power solar energy harvesting and management for IoT projects and renewable energy applications. Solar Power Manager is a complete small power and high-efficiency solar power management module. It features as MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel. Apart from serving as a solar charger, the module can provide up to 2A charging current to 3.7V Li battery with AC adapter (within 30V) or USB charger, three individual ON/OFF controllable DC-DC converters with 5V 1.5A, 3.3V 1A and 9V/12V 0.5A outputs. These features satisfy the needs of various solar power projects and low-power applications. The module also employs various protection functions, such as Li battery protection, battery/solar panel reverse connection protection, output over temperature and over current/short circuit protection, which greatly improves the stability and safety of the system. Features        Constant Voltage MPPT Algorithm, Maximizing Solar Panel Efficiency 7V~30V Wide Solar Panel Input Voltage Various Charging Mode: Solar/AC Adapter/USB Charger (2A Max Charge Current) Three Individual ON/OFF Controllable Regulated Power Supply for Low-Power Applications All Multi-Layer Ceramic Capacitors (MLCC), Safe, Stable and High-Efficiency Various Protection Functions USB Connector with ESD Shell Specifications                           Solar Power Management IC: LTC3652 Solar Input Voltage (SOLAR IN)：7V~30V Battery Input (BAT IN): 3.7V Li-Polymer/Li-ion Battery Charge Current (USB/SOLAR IN): 2A Max Trickle Charging, Constant Current, Constant Voltage Three Phases Charging Charge Cutoff Voltage (USB/SOLAR IN): 4.2V±1% MPPT Setting Voltages：OFF/9V/12V/18V USB IN Voltage：5V Regulated Power Supply：OUT1=5V 1.5A; OUT2=3.3V 1A; OUT3=9V/12V 0.5A Regulated Power Supply Efficiency (3.7V battery IN) OUT1: 90%@10%Load, 86%@50%Load, 80%@90%Load OUT2: 96%@10%Load；92%@50%Load；87%@90%Load OUT3 (9V OUT): 88%@10%Load, 89%@50%Load, 86%@90%Load OUT3 (12V OUT): 87%@10%Load, 88%@50%Load, 82%@90%Load USB Charge Efficiency: 84%@1A；74%@1.8A Solar Charge Efficiency (18V SOLAR IN)：78%@1A；72%@1.8A Maximum Quiescent Current: Overall：