{"title":"Sunflower: Solar Power Manager 9V/12V/18V","handle":"sunflower-solar-power-manager-9v-12v-18v","url":"/products/sunflower-solar-power-manager-9v-12v-18v","description":"    DFRobot is launching a brand new series - Sunflower, focusing on high-efficiency, small power solar energy 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 protect 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.  Board Overview         Solar Power Manager interfaces (front)    Solar Power Manager interfaces (back)   Connection Diagram       Build a solar powered system          FEATURES         \tConstant voltage MPPT algorithm, maximizing solar panel efficiency \t7V~30V wide solar panel input voltage \tVarious charging mode: solar/AC adapter/USB charger (2A max charge current) \tThree individual ON/OFF controllable regulated power supply for low-power applications \tAll multi-layer ceramic capacitors (MLCC), safe, stable and high-efficiency \tVarious protection functions \tUSB connector with ESD shell           APPLICATIONS         \tSmart solar environment monitor system \tSolar powered robot \tSmall solar street lamp \tSolar power bank           SPECIFICATION         \tSolar power management IC: LTC3652 \tSolar input voltage (SOLAR IN): 7V~30V \tBattery input (BAT IN): 3.7V single cell Li-polymer/Li-ion battery \tCharge current(USB/SOLAR IN): 2A Max \tCharging cutoff voltage(USB/SOLAR IN): 4.2V±1% \tMPPT setting voltages：OFF/9V/12V/18V \tUSB IN voltage: 5V \tRegulated power supply: OUT1=5V 1.5A; OUT2=3.3V 1A; OUT3=9V/12V 0.5A \tRegulated power supply efficiency (3.7V battery IN) \t             OUT1: 86%@50%Load \t             OUT2: 92%@50%Load \t             OUT3 (9V OUT): 89%@50%Load \tUSB charge efficiency: 84%@1A \tSolar charge efficiency (18V SOLAR IN)：78%@1A \tMaximum quiescent current: <3 mA \tProtections \t             BAT IN: over charge /over discharge /over current /reverse connection protection \t             OUT1-OUT3/USB OUT: short circuit/over current/over heat protection \t             SOLAR IN: reverse connection protection \tOperation temperature：-40℃～85℃ \tDimension：78.0mm*68.0mm           DOCUMENTS         \tProduct wiki \tMore Documents   ","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":5633,"title":"Default Title","sku":"DF-DFR0535","price":58.57,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":85,"option1":"Default Title"}]}