DFR0559 Sunflower: Solar Power Manager 5V

Introduction

DFRobot Sunflower is a new series focusing on high-efficiency small power solar energy harvesting and management for makers, low-power applications and IoT projects. Solar Power Manager 5V is a small power and high-efficiency solar power management module designed for 5V solar panel. 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 900mA charging current to 3.7V Li battery with USB charger. The ON/OFF controllable DC-DC converters with 5V 1A output satisfies the needs of various solar power projects and low-power applications. The module also employs various protection functions, such as 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
Designed for 5V Solar Panel
Double Charging Mode: Solar/USB Charger (900mA Max Charge Current)
5V ON/OFF Controllable Regulated Power Supply for Low-Power Applications
Various Protection Functions
USB Connector with ESD Shell

Specifications
Solar Power Management IC: CN3065
Solar Input Voltage (SOLAR IN): 4.5V~6V
Battery Input (BAT IN): 3.7V Li-Polymer/Li-ion Battery
Charge Current (USB/SOLAR IN): 900mA Max Trickle Charging, Constant Current, Constant Voltage Three Phases Charging
Charge Cutoff Voltage (USB/SOLAR IN): 4.2V±1%
USB IN Voltage: 5V
Regulated Power Supply: 5V 1A
Regulated Power Supply Efficiency (3.7V Battery IN) 5V/USB OUT: 89%@10%Load, 86%@50%Load, 83%@90%Load

USB/Solar Charge Efficiency: 73%@3.7V 900mA BAT IN
Maximum Quiescent Current: <1 mA
Protection Functions BAT IN: Over Charge/Reverse Connection Protection
5V/USB OUT: Short Circuit/Over Current/Over Heat Protection
SOLAR IN: Reverse Connection Protection

Operation Temperature: -40℃～85℃
Dimension: 33.0mm*63.0mm/1.3 * 2.48 inches