{"product_id":"3-in-1-dc-dc-buck-converter-selectable-3v3-5v-12v","title":"3-in-1 DC-DC Buck Converter Module Selectable 3.3V 5V 12V Fixed Output - Step-Down Power Supply","description":"\u003ch2 style=\"text-align:center;\"\u003e3-in-1 DC-DC Buck Converter Module - Selectable 3.3V \/ 5V \/ 12V Fixed Output Step-Down Power Supply\u003c\/h2\u003e\u003cp style=\"text-align:center;\"\u003eA versatile step-down buck converter module with three selectable fixed output voltages. Simply solder the output selection jumper pad on the back of the board to set your required output - 3.3V, 5V, or 12V - and connect your power source. Ideal for powering microcontrollers, sensors, and modules in embedded projects where a fixed regulated voltage is needed without a multi-turn potentiometer.\u003c\/p\u003e\u003cp style=\"text-align:center;\"\u003e\u003cimg src=\"https:\/\/sidekick.shopify.ai\/rails\/active_storage\/blobs\/redirect\/eyJfcmFpbHMiOnsiZGF0YSI6MzczNDc5NjQ0NCwicHVyIjoiYmxvYl9pZCJ9fQ==--7c60afd0c411826851bf749f20250ce16c0f41ea\/WhatsApp_Image_2026-09-14_at_7.52.28_PM_1.jpeg\" alt=\"3-in-1 DC-DC Buck Converter Module front view showing inductor IC and 3-pin output header on green PCB\" style=\"max-width:100%;height:auto;border-radius:8px;\"\u003e\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e3 selectable fixed output voltages: 3.3V, 5V, or 12V - chosen by soldering the back-pad jumper\u003c\/li\u003e\n\u003cli\u003eStep-down (buck) topology - efficient DC-DC conversion, lower heat than linear regulators\u003c\/li\u003e\n\u003cli\u003e3-pin through-hole output header - direct breadboard or PCB mount\u003c\/li\u003e\n\u003cli\u003eCompact green PCB - minimal footprint for tight enclosures and prototype boards\u003c\/li\u003e\n\u003cli\u003eSuitable for input voltages above the selected output (e.g. 7-24V input for 5V output)\u003c\/li\u003e\n\u003cli\u003eOnboard inductor and filtering capacitors - clean regulated output\u003c\/li\u003e\n\u003cli\u003eNo adjustment needed after soldering - stable fixed output voltage\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"text-align:center;\"\u003e\u003cimg src=\"https:\/\/sidekick.shopify.ai\/rails\/active_storage\/blobs\/redirect\/eyJfcmFpbHMiOnsiZGF0YSI6MzczNDc5NjQ0OSwicHVyIjoiYmxvYl9pZCJ9fQ==--31fc517071c9b65eebc893ae87ad2137d584bf64\/WhatsApp_Image_2026-09-14_at_7.52.28_PM_2.jpeg\" alt=\"3-in-1 DC-DC Buck Converter Module back view showing 3.3V 5V 12V solder jumper pad selector\" style=\"max-width:100%;height:auto;border-radius:8px;\"\u003e\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTopology:\u003c\/strong\u003e Step-Down (Buck)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Voltage Options:\u003c\/strong\u003e 3.3V \/ 5V \/ 12V (solder-pad selectable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e Must exceed selected output (typical: 5V-24V DC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Selection:\u003c\/strong\u003e Solder jumper pad on back of PCB (3.3V \/ 5V \/ 12V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Connector:\u003c\/strong\u003e 3-pin through-hole header (IN, GND, OUT)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCB Color:\u003c\/strong\u003e Green\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm Factor:\u003c\/strong\u003e Compact inline module\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"text-align:center;\"\u003e\u003cimg src=\"https:\/\/sidekick.shopify.ai\/rails\/active_storage\/blobs\/redirect\/eyJfcmFpbHMiOnsiZGF0YSI6MzczNDc5NjQ0MSwicHVyIjoiYmxvYl9pZCJ9fQ==--6cf87833d61132f4ea8f655f9184af8ce40c58f9\/WhatsApp_Image_2026-09-14_at_7.52.28_PM.jpeg\" alt=\"3-in-1 DC-DC Buck Converter Module angled view showing top component layout and 3-pin header\" style=\"max-width:100%;height:auto;border-radius:8px;\"\u003e\u003c\/p\u003e\u003ch3\u003eHow to Select Output Voltage\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eInspect the back of the PCB - three solder pads are labeled 3.3V, 5V, and 12V\u003c\/li\u003e\n\u003cli\u003eBridge the pad corresponding to your required output voltage with a small solder blob\u003c\/li\u003e\n\u003cli\u003eApply input voltage above your selected output and verify output before connecting your load\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePerfect For\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eArduino, ESP32, and Raspberry Pi Power Supply from 12V or 24V Sources\u003c\/li\u003e\n\u003cli\u003e3.3V Sensor and Module Power Regulation\u003c\/li\u003e\n\u003cli\u003e5V Logic Level Power in Automotive and Industrial Applications\u003c\/li\u003e\n\u003cli\u003e12V Fixed Regulated Output from Higher Voltage Source\u003c\/li\u003e\n\u003cli\u003eEmbedded System Power Rail Design and Prototyping\u003c\/li\u003e\n\u003cli\u003eElectronics Lab Bench and Breadboard Power Supply Module\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"text-align:center;\"\u003e\u003cstrong\u003eOrder now and get a compact, selectable fixed-voltage buck converter for your next embedded power supply project.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Lahore Store","offers":[{"title":"Default Title","offer_id":56096949436489,"sku":"MOD-BUCK-3IN1-3V3-5V-12V-SEL","price":160.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/9090\/2089\/files\/WhatsApp_Image_2026-09-14_at_7.52.28_PM_1.jpg?v=1789399386","url":"https:\/\/lahorestore.pk\/products\/3-in-1-dc-dc-buck-converter-selectable-3v3-5v-12v","provider":"Lahore Store","version":"1.0","type":"link"}