Sunflower Micro Solar Power Manager

This battery-protected solar power charger is designed to power Low-power wireless sensors or controllers in IoT systems.

With the micro solar power manager, customers can easily integrate their solar power supply systems and provide continuous, stable, and Eco-friendly energy for their IoT projects.

This solar power management module boasts a voltage regulation output of 3.3V and 90mA, Effectively meeting the power requirements of most Low-power devices.

It ensures the stability of the power supply during Wireless device data transmission and reception, preventing system crashes caused by sudden Electrical surges.

This is particularly critical for sensitive precision instruments and sensors, for which high stability is paramount.

Furthermore, the voltage regulation output also minimizes device malfunctions and damages resulting from voltage fluctuations, thus prolonging the equipment’s lifespan.

This solar management module utilizes a constant voltage MPPT (Maximum Power Point Tracking) algorithm, which enables maximum solar energy conversion efficiency even in low light conditions.

It can charge a 3.7V lithium battery via solar panels or USB, supplying up to 70mA and 100mA charging current, respectively.

Lithium batteries may suffer Over-discharge problems for Low-power solar projects when faced with consecutive cloudy days or insufficient battery capacity to meet equipment requirements.

To address this, the micro solar power charger is designed with Overcharge and Over-discharge protection Features.

These Features ensure that the battery stays within a safe range during the Charging and Discharging processes, thus prolonging its lifespan.

Specifications:

• Solar Power Management IC: SPV1050
• Solar Input Voltage (SOLAR IN): 0.5V~4V
• MPPT: 75% Open Voltage
• Battery Input (BAT IN): 3.7V Lithium Battery
• Maximum Charge Current: 100mA@USB IN；70mA@SOLAR IN
• Over-charge Protection Threshold: 4.2V
• Over-discharge Protection Threshold: 3.1V
• Regulated Power Supply: 3.3V 90mA@BAT IN 3.7V
• Quiescent Current: <3 uA
• Protection Functions
• BAT IN: Over-discharge/Over-charge/Reverse Connection Protections
• OUT: Short Circuit/Over Current Protections
• Operation Temperature: -40℃～85℃
• Dimension: 30.0mm*30.0mm

Package Includes:

• DFrobot Sunflower Micro Solar Power Manager / Charger with Regulated Output

Development  Resources: Demo Codes, Schematics, Datasheets, Etc

• Schematic
• Dimension Diagram

1. There may be slight size deviations due to manual measurement and different measuring methods and tools.
2. The picture may not reflect the actual colour of the item because of different photography lights, angles and display monitors.