{"product_id":"3-3v-solar-charging-board","title":"Solar Charging Board (3.3V Output)","description":"\u003cp\u003eSimplify your remote IoT, off-grid power management, and hardware prototypes.\u003c\/p\u003e\n\u003cp\u003eDesigned specifically for makers and hardware developers, this compact power management board is the perfect backbone for any remote sensor, IoT node, or solar-powered prototype. Engineered around premium Texas Instruments silicon, it seamlessly handles solar charging, battery management, and highly efficient voltage step-down—all on one ready-to-deploy footprint.\u003c\/p\u003e\n\u003cp\u003eWith a robust 2A output, this board easily handles the power-hungry transmission spikes of WiFi, cellular, or LoRa modules without browning out your microcontroller. Forget soldering tiny surface-mount power ICs or dealing with messy wiring; with three onboard JST connectors, integrating your solar panel, battery, and load is literally plug-and-play.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-Current 3V Output: Features the TI TLV62569DDC step-down (buck) converter, delivering up to 2A of sustained output current. Perfect for 3.3V logic microcontrollers, ESP32s, ESP8266s, and cellular\/LoRa IoT nodes that demand heavy current during transmission bursts.\u003c\/li\u003e\n\u003cli\u003eIntelligent Solar Charging: Powered by the TI BQ25185 battery charger IC, ensuring safe, optimized charging for 1S NMC\/LiPo batteries at up to 1A directly from a 5-7V solar panel.\u003c\/li\u003e\n\u003cli\u003ePlug-and-Play Connections: Three built-in JST connectors dedicated to the Solar Panel (Input), Battery, and Station\/Load (Output) for rapid prototyping.\u003c\/li\u003e\n\u003cli\u003eVisual Diagnostics: Onboard status LEDs for quick troubleshooting (\"Charge\" and \"Fault\" indicators).\u003c\/li\u003e\n\u003cli\u003eRugged Ready: Planning to deploy your prototype outdoors? Optional conformal coating is available upon request to protect the board from moisture, humidity, and harsh environments.\u003c\/li\u003e\n\u003cli\u003eEnclosure Friendly: Designed with standard mounting holes that drop perfectly into a polycarbonate enclosure (optional), making the leap from prototype to professional deployment a breeze.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTechnical Specifications\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInput Voltage (Solar): 5V - 7V DC\u003c\/li\u003e\n\u003cli\u003eBattery Compatibility: 1S NMC (Lithium-Ion \/ LiPo)\u003c\/li\u003e\n\u003cli\u003eMax Charge Current: Up to 1A\u003c\/li\u003e\n\u003cli\u003eRegulated Output: 3.3V DC\u003c\/li\u003e\n\u003cli\u003eMax Output Current: Up to 2A continuous\u003c\/li\u003e\n\u003cli\u003ePrimary ICs: Texas Instruments BQ25185 (Charger) \u0026amp; TLV62569DDC (Buck Converter)\u003c\/li\u003e\n\u003cli\u003eBoard Dimensions: 45mm x 36mm (M3 mounting holes spaced 27mm apart)\u003c\/li\u003e\n\u003cli\u003eEnclosure Dimensions: \u003cspan\u003e118mm x 67mm x 60mm (External), 106mm x 54mm x 49mm (Internal)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0944\/7587\/8690\/files\/SolarChargingBoard3VSchematic.pdf?v=1782336988\"\u003eBoard Schematic\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0944\/7587\/8690\/files\/SolarEnclosure.STEP?v=1782338104\"\u003eEnclosure STEP\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eWhether you are building a custom weather station, an agricultural monitor, or LPWAN node, this board provides the rock-solid power foundation your prototype needs.\u003c\/p\u003e","brand":"MATR Electronics","offers":[{"title":"Enclosure (Incl. Cable Glands, JST Pigtails, Conformal Coating)","offer_id":51853956710690,"sku":null,"price":40.0,"currency_code":"USD","in_stock":true},{"title":"Only Board (Conformal Coat)","offer_id":51853956743458,"sku":null,"price":22.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0944\/7587\/8690\/files\/IMG_4932.jpg?v=1782335094","url":"https:\/\/www.matrelectronics.com\/products\/3-3v-solar-charging-board","provider":"MATR Electronics","version":"1.0","type":"link"}