{"title":"Sunflower: Solar Power Manager 5V","handle":"sunflower-solar-power-manager-5v","url":"/products/sunflower-solar-power-manager-5v","description":"The Sunflower Solar Power Manager 5V is a high-efficiency solar power management module designed for 5 V solar panels. It features MPPT (Maximum Power Point Tracking) to maximise solar panel efficiency, and supports dual charging via solar panel or USB with up to 900 mA charging current for a 3.7 V lithium battery.\n\nThe on-board DC-DC converter provides a regulated 5 V 1 A output with ON/OFF control, suitable for powering microcontrollers, sensors, and other low-power devices. Comprehensive protection functions cover battery and solar panel reverse connection, output over-temperature, over-current, and short circuit.\n\nKey Features\n\n\nMPPT Algorithm – Constant voltage tracking maximises solar panel efficiency\n\nDual Charging – Solar panel or USB input, up to 900 mA charge current\n\n5 V 1 A Regulated Output – ON/OFF controllable DC-DC converter\n\nComprehensive Protection – Reverse connection, over-charge, short circuit, over-current, and over-temperature\n\nThree-Phase Charging – Trickle charge, constant current, constant voltage\n\nESD-Protected USB Connector – Robust USB input\n\nLow Quiescent Current – <1 mA standby draw\n\n\nSpecifications\n\n\nSolar Management IC: CN3065\n\nSolar Input (SOLAR IN): 4.5–6 V\n\nUSB Input: 5 V\n\nBattery Input (BAT IN): 3.7 V single-cell Li-Po/Li-Ion\n\nCharge Current: 900 mA max\n\nCharge Cutoff Voltage: 4.2 V ±1%\n\nRegulated Output: 5 V, 1 A\n\nOutput Efficiency (3.7 V battery): 89% @ 10% load, 86% @ 50% load, 83% @ 90% load\n\nCharge Efficiency: 73% @ 3.7 V 900 mA\n\nQuiescent Current: <1 mA\n\nOperating Temperature: −40 °C to +85 °C\n\nBoard Size: 33 mm × 63 mm\n\n\nProtection Functions\n\n\nBAT IN: Over-charge and reverse connection protection\n\n5 V/USB OUT: Short circuit, over-current, and over-temperature protection\n\nSOLAR IN: Reverse connection protection\n\n\nIdeal For\n\nSolar-powered environmental monitoring systems\nSolar-powered robots\nSmall solar street lamps\nDIY solar power banks\n\n\nResources\n\nProduct Wiki\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":5563,"title":"Default Title","sku":"DF-DFR0559","price":13.41,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":2142,"option1":"Default Title"}]}