The Solar Power Manager Micro represents a state-of-the-art micropower solar power management module, meticulously designed for powering low-power wireless sensors or controllers in IoT applications using compact solar panels ranging from 1V to 3V. Boasting exceptional efficiency and extremely low power dissipation, this module incorporates MPPT (Maximum Power Point Tracking) technology, optimizing solar energy conversion even under low-light conditions. Its revolutionary features enable the operation of low-power wireless devices without the need for charging or battery replacements, relying solely on sustainable solar power.

Features:

• MPPT Algorithm: Employing a constant voltage ratio MPPT algorithm to maximize solar panel output power across varying light conditions.
• Dual Charging Options: Capable of charging a 3.7V lipo battery through either solar or USB, providing charge currents up to 70mA or 100mA, respectively.
• Regulated Output: Delivers a stable 3.3V, 90mA regulated output, capable of handling burst currents during transmission or reception in low-power wireless devices.
• Battery Protections: Equipped with over-charge and over-discharge protections to safeguard the battery and extend its operational life.

Specifications:

• Micro Solar Power Management Module
• Solar Power Management IC: SPV1050
• Solar Input Voltage (SOLAR IN): 0.5V~4V
• 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

Connection Diagram:

• Illustrates how to power micro:bit and Firebeetle Series devices with small solar panels using the Solar Power Manager Micro.

Documents:

• product wiki

Shipping List:

• 1 x  Solar Power Manager Micro and a Monocrystalline Silicon Solar Panel (2V 160mA, 50*50mm).