{"product_id":"12v-9a-step-down-voltage-regulator-d42v110f12","title":"12V, 9A Step-Down Voltage Regulator D42V110F12","description":"\u003ch2\u003ePololu 12V 9A Step-Down Voltage Regulator D42V110F12\u003c\/h2\u003e\n\n\u003cp\u003e  The \u003cstrong\u003ePololu D42V110F12\u003c\/strong\u003e is a compact, high-power   \u003cstrong\u003e12V buck regulator\u003c\/strong\u003e designed to step down higher DC voltages into a stable   \u003cstrong\u003e12V output\u003c\/strong\u003e. It supports an input range of \u003cstrong\u003e12V to 60V\u003c\/strong\u003e and can deliver a   typical maximum continuous output current of around \u003cstrong\u003e9A at 42V input\u003c\/strong\u003e, depending on airflow,   input voltage, load, and heat conditions.\u003c\/p\u003e\n\n\u003cp\u003e  This is a great power module for robotics, motor systems, battery-powered builds, LED projects,   and other electronics that need an efficient 12V supply from a higher-voltage source.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eFixed 12V output\u003c\/strong\u003e with ±3% accuracy\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eWide input range:\u003c\/strong\u003e 12V to 60V DC\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eTypical max output current:\u003c\/strong\u003e 9A at 42V input\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eHigh efficiency:\u003c\/strong\u003e typically above 90%, depending on input voltage and load\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eSynchronous buck regulator\u003c\/strong\u003e for better efficiency than linear regulators\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eSoft-start feature\u003c\/strong\u003e to limit inrush current during startup\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eEnable pin\u003c\/strong\u003e for low-power shutdown control\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003ePower-good output\u003c\/strong\u003e for voltage monitoring and system sequencing\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eProtection features:\u003c\/strong\u003e reverse-voltage protection, over-current protection, and thermal shutdown\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eCompact board size:\u003c\/strong\u003e 31.8mm × 43.2mm × 9mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Use This Regulator?\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eEfficient power conversion:\u003c\/strong\u003e Ideal when dropping from high battery voltages to 12V.  \u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eGood for higher-current loads:\u003c\/strong\u003e Suitable for systems that need more current than small buck modules can provide.  \u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eBuilt-in safety features:\u003c\/strong\u003e Helps protect the board from common power faults.  \u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eEasy mounting:\u003c\/strong\u003e Includes four mounting holes for #2 or M2 screws.  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eRobotics power systems\u003c\/li\u003e\n\t\u003cli\u003e12V motor and actuator projects\u003c\/li\u003e\n\t\u003cli\u003eBattery-powered electronics\u003c\/li\u003e\n\t\u003cli\u003eLED lighting systems\u003c\/li\u003e\n\t\u003cli\u003eRC and mobile robot platforms\u003c\/li\u003e\n\t\u003cli\u003eIndustrial and lab prototype power rails\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\n\u003ctable\u003e\n\t\u003ctbody\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eBrand\u003c\/th\u003e\n\t\t\t\u003ctd\u003ePololu\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003ePololu Item No.\u003c\/th\u003e\n\t\t\t\u003ctd\u003e5677\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eModel\u003c\/th\u003e\n\t\t\t\u003ctd\u003eD42V110F12\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eRegulator Type\u003c\/th\u003e\n\t\t\t\u003ctd\u003eSynchronous step-down \/ buck regulator\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eInput Voltage\u003c\/th\u003e\n\t\t\t\u003ctd\u003e12V to 60V DC\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eOutput Voltage\u003c\/th\u003e\n\t\t\t\u003ctd\u003e12V fixed\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eOutput Accuracy\u003c\/th\u003e\n\t\t\t\u003ctd\u003e±3%\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eTypical Max Output Current\u003c\/th\u003e\n\t\t\t\u003ctd\u003e9A at 42V input; actual current depends on heat, airflow, input voltage, and load\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eEfficiency\u003c\/th\u003e\n\t\t\t\u003ctd\u003eTypically above 90%, depending on operating conditions\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eSwitching Frequency\u003c\/th\u003e\n\t\t\t\u003ctd\u003eAbout 800kHz under heavy loads\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eNo-Load Quiescent Current\u003c\/th\u003e\n\t\t\t\u003ctd\u003eTypically under 0.3mA\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eProtections\u003c\/th\u003e\n\t\t\t\u003ctd\u003eReverse-voltage protection, over-current protection, thermal shutdown\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eBoard Size\u003c\/th\u003e\n\t\t\t\u003ctd\u003e31.8mm × 43.2mm × 9mm\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\t\u003ctr\u003e\n\t\t\t\u003cth\u003eMounting Holes\u003c\/th\u003e\n\t\t\t\u003ctd\u003e4 holes for #2 or M2 screws\u003c\/td\u003e\n\t\t\u003c\/tr\u003e\n\t\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eConnection Notes\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eVIN:\u003c\/strong\u003e Connect to the input power source.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eGND:\u003c\/strong\u003e Ground connection. All grounds are common.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eVOUT:\u003c\/strong\u003e Regulated 12V output.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003eENA:\u003c\/strong\u003e Optional enable input for turning the regulator on\/off.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003ePG:\u003c\/strong\u003e Optional power-good output for voltage monitoring.\u003c\/li\u003e\n\t\u003cli\u003e\n\u003cstrong\u003ePFM:\u003c\/strong\u003e Optional mode pin for light-load efficiency or fixed-frequency operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Usage Notes\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eThis regulator can get hot during normal use. Avoid touching it while powered.\u003c\/li\u003e\n\t\u003cli\u003eContinuous output current depends on input voltage, airflow, ambient temperature, and heat sinking.\u003c\/li\u003e\n\t\u003cli\u003eFor high-current loads, use thick wires and secure input\/output connections.\u003c\/li\u003e\n\t\u003cli\u003eUse extra protection such as fuses or breakers for demanding power systems.\u003c\/li\u003e\n\t\u003cli\u003eMake sure your input voltage is high enough above 12V to account for dropout at your load current.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRecommended Add-ons\u003c\/h3\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\u003ca href=\"\/search?q=terminal%20block\"\u003e5mm pitch terminal blocks\u003c\/a\u003e for easier power wiring\u003c\/li\u003e\n\t\u003cli\u003e\n\u003ca href=\"\/search?q=header%20pins\"\u003e0.1-inch header pins\u003c\/a\u003e for control pins\u003c\/li\u003e\n\t\u003cli\u003e\n\u003ca href=\"\/search?q=wire\"\u003eHigh-current wire\u003c\/a\u003e for VIN, GND, and VOUT connections\u003c\/li\u003e\n\t\u003cli\u003e\n\u003ca href=\"\/search?q=fuse\"\u003eFuse or circuit breaker\u003c\/a\u003e for added power protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan this boost voltage?\u003c\/strong\u003e\u003cbr\u003e\nNo. This is a step-down regulator. The input voltage must be higher than the required 12V output, including dropout allowance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan it really supply 9A continuously?\u003c\/strong\u003e\u003cbr\u003e\nIt can typically supply up to 9A at 42V input, but real output depends on cooling, load, and input voltage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this better than a linear regulator?\u003c\/strong\u003e\u003cbr\u003e\nYes for high-voltage step-down use. It is a switching regulator, so it is much more efficient than a linear regulator.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it have protection features?\u003c\/strong\u003e\u003cbr\u003e\nYes. It includes reverse-voltage protection, over-current protection, and over-temperature shutoff.\u003c\/p\u003e\n","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":52894657708321,"sku":"POL5677","price":11349.95,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/Screenshot2026-06-25090152.png?v=1782349792","url":"https:\/\/circuit.rocks\/products\/12v-9a-step-down-voltage-regulator-d42v110f12","provider":"circuitrocks","version":"1.0","type":"link"}