{"title":"3.3V 800mA Linear Voltage Regulator - LD1117-3.3 TO-220","handle":"3-3v-800ma-linear-voltage-regulator-ld1117-3-3-to-220","url":"/products/3-3v-800ma-linear-voltage-regulator-ld1117-3-3-to-220","description":"A popular low-dropout (LDO) 3.3 V linear voltage regulator based on the LD1117 in a TO-220 package. With approximately 1 V dropout and up to 800 mA output current, it cleanly steps down 5–15 V supplies to a regulated 3.3 V with 1% accuracy.\n\nBuilt-in current limiting and thermal shutdown provide robust protection. The TO-220 package allows heatsinking for higher-current applications, dissipating up to 2 W without an external heatsink.\n\nKey Features\n\n\nLow Dropout – ~1 V dropout (vs 2 V for 78XX series)\n\n800 mA Output – High current capacity with proper heatsinking\n\n3.3 V ±1% Regulation – Clean, accurate output voltage\n\nInput Range – 4.3–15 V DC\n\nBuilt-In Protection – Current limiting and thermal shutdown\n\nTO-220 Package – Easy to heatsink for higher power dissipation\n\n\nSpecifications\n\n\nOutput Voltage – 3.3 V ±1%\n\nMax Output Current – 800 mA\n\nDropout Voltage – ~1 V\n\nInput Voltage – 4.3–15 V\n\nQuiescent Current – 5 mA\n\nThermal Resistance – 62.5 °C/W junction-to-air (TO-220)\n\nMax Power Dissipation – ~2 W without heatsink\n\n\nIdeal For\n\nStepping 5 V supplies down to 3.3 V for microcontrollers and sensors\nProjects requiring more current than TO-92 regulators can provide\nBreadboard and through-hole PCB designs\n\n\nPackage Contents\n\n1× LD1117-3.3 Voltage Regulator (TO-220)\n\n\n\nNote: Requires at least 10 µF electrolytic capacitors on both input and output for stability. Power dissipation = (Vin − 3.3 V) × Iout — add a heatsink if this exceeds 2 W.\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":9185,"title":"Default Title","sku":"AF-2165","price":2.5,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}