Solar Power Manager (for 9V/12V/18V Solar Panel)

Introduction The DFRobot Solar Power Manager series are designed for IoT projects and renewable energy projects, providing safe and high-efficiency embedded solar power management modules for makers and application engineers. 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. SPECIFICATION Solar power management
IC: LTC3652 Solar input voltage (SOLAR IN) 7V~30V Battery input (BAT
IN): 3.7V single cell Li-polymer/Li-ion battery Charge current (USB/SOLAR
IN): 2A Max Charging cutoff voltage (USB/SOLAR
IN): 4.2V ±1% MPPT setting voltagesOFF/9V/12V/18V USB IN voltage5V Regulated power supplyOUT1=5V 1.5A; OUT2= 3.3V 1A; OUT3=9V/12V 0.5A Regulated power supply efficiency ( 3.7V battery IN) OUT 1: 86 %@50%Load OUT 2: 92 %@50%Load OUT3 (9V
OUT): 89%@50%Load
USB charge efficiency: 84%@1A Solar charge efficiency (18V SOLAR IN) 78%@1A
Maximum quiescent current: <3 mA
Protections BAT IN: over charge /over discharge /over current /reverse connection protection
OUT1-OUT3/USB OUT: short circuit/over current/over heat protection
SOLAR IN: reverse connection protection Operation temperature-4085