{"product_id":"2859-pololu-6v-2-5a-step-down-voltage-regulator-d24v22f6","title":"Pololu 6V, 2.5A Step-Down Voltage Regulator D24V22F6","description":"\u003cp\u003eThis small synchronous switching step-down (or buck) regulator takes an input voltage of up to 36 V and efficiently reduces it to \u003cstrong\u003e6 V.\u003c\/strong\u003e The board measures only 0.7″ × 0.7″ yet delivers typical continuous output currents between \u003cstrong\u003e1.8 A\u003c\/strong\u003e and \u003cstrong\u003e2.5 A\u003c\/strong\u003e , depending on the input voltage, which makes this regulator well suited for powering moderate loads like sensors or small motors. An optional enable input can be used to put the regulator in a low-power state with a current draw of 5 µA to 10 µA per volt on VIN. The regulator also features reverse voltage protection and a power-good output indicates when the regulator cannot adequately maintain the output voltage.\u003c\/p\u003e\n\n\u003cbr\u003e\u003ch2\u003e Overview\u003c\/h2\u003e\n\n\u003ctable class=\"picture_with_caption right\"\u003e\u003ctr\u003e\n\n\u003ctd\u003e \u003ca href=\"https:\/\/a.pololu-files.com\/picture\/0J6800.1200.jpg?06c1a10a306ea06b2988c3fc1156fee8\" class=\"noscript-fallback\"\u003e\u003cimg alt=\"\" class=\"zoomable\" data-gallery-pictures=\"[{\" id step-down voltage regulator d24v22fx top view with dimensions. data-picture-id=\"0J6800\" data-picture-longest_side=\"1063\" src=\"https:\/\/a.pololu-files.com\/picture\/0J6800.300.jpg?06c1a10a306ea06b2988c3fc1156fee8\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/tr\u003e\u003c\/table\u003e\n\n \u003cp\u003eThe D24V22Fx family of step-down voltage regulators generates lower output voltages from input voltages as high as 36 V. They are synchronous switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters) with typical efficiencies of 85% to 95%, which is much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large. These regulators can typically support continuous output currents between 1.4 A and 2.6 A, though the actual available output current is a function of the input voltage and efficiency (see the \u003ca href=\"#efficiency\"\u003eTypical efficiency\u003c\/a\u003e and \u003ca href=\"#maxcurrent\"\u003eMaximum continuous output current\u003c\/a\u003e sections below). In general, the available output current is a little higher for the lower-voltage versions than it is for the higher-voltage versions, and it decreases as the input voltage increases.\u003c\/p\u003e\n\n \u003cp\u003eThese regulators have a typical quiescent (no load) current draw of around 1 mA, and an enable pin can be used to put the boards in a low-power state that reduces the quiescent current to approximately 5 µA to 10 µA per volt on VIN .\u003c\/p\u003e\n\n\u003cp\u003e The modules have built-in reverse-voltage protection, short-circuit protection, a thermal shutdown feature that helps prevent damage from overheating, and a soft-start feature that reduces inrush current.\u003c\/p\u003e\n\n\u003cp\u003e Several different fixed output voltages are available:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e \u003ca href=\"https:\/\/www.pololu.com\/product\/2857\"\u003eD24V22F3: Fixed 3.3V output\u003c\/a\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003ca href=\"https:\/\/www.pololu.com\/product\/2858\"\u003eD24V22F5: Fixed 5V output\u003c\/a\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003ca href=\"https:\/\/www.pololu.com\/product\/2859\"\u003eD24V22F6: Fixed 6V output\u003c\/a\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003ca href=\"https:\/\/www.pololu.com\/product\/2860\"\u003eD24V22F7: Fixed 7.5V output\u003c\/a\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003ca href=\"https:\/\/www.pololu.com\/product\/2861\"\u003eD24V22F9: Fixed 9V output\u003c\/a\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003ca href=\"https:\/\/www.pololu.com\/product\/2855\"\u003eD24V22F12: Fixed 12V output\u003c\/a\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n \u003cp\u003eThe different voltage versions of this regulator all look very similar, so you should consider adding your own distinguishing marks or labels if you will be working simultaneously with multiple versions. This product page applies to all versions of the D24V22Fx family.\u003c\/p\u003e\n\n\u003cp\u003e The D24V22Fx family is intended to replace our older D24V25Fx family of step-down voltage regulators. The two designs have the same size and similar current capabilities and input voltage ranges, but they do not have the same pinout and are based on different internal circuits, so there are fundamental differences in operation. In particular, these newer D24V22Fx regulators have much lower dropout voltages and provide a “power good” signal, and the newer design allows for higher output voltages (eg 12 V).\u003c\/p\u003e\n\n \u003cp\u003eFor higher-power alternatives, please consider our \u003ca href=\"https:\/\/www.pololu.com\/category\/261\/d36v28fx-step-down-voltage-regulators\"\u003eD36V28Fx family of step down regulators\u003c\/a\u003e that can handle current between 2 A and 4 A and take input voltages up to 50 V.\u003c\/p\u003e\n\n\u003cp class=\"note\"\u003e We manufacture these boards in-house at our Las Vegas facility, which gives us the flexibility to make these regulators with customized components to better meet the needs of your project. For example, if you have an application where the input voltage will always be below 20 V and efficiency is very important, we can make these regulators a bit more efficient at high loads by replacing the 40V reverse voltage protection MOSFET with a 20V one. We can also customize the output voltage. If you are interested in customization, please \u003ca href=\"\/en\/contact\"\u003econtact us\u003c\/a\u003e .\u003c\/p\u003e\n\n\u003ch2\u003e Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Input voltage:\n\u003cul\u003e\n\n\u003cli\u003e 4 V to 36 V for the version that outputs 3.3 V\u003c\/li\u003e\n\n\t\t \u003cli\u003e[ \u003ci\u003eoutput voltage + dropout voltage\u003c\/i\u003e ] to 36 V for output voltages of 5 V and higher (see the \u003ca href=\"#dropout\"\u003edropout voltage section\u003c\/a\u003e for details)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e Fixed 3.3 V, 5 V, 6 V, 7.5 V, 9 V, or 12 V output (depending on regulator version) with 4% accuracy\u003c\/li\u003e\n\n\u003cli\u003e Typical maximum continuous output currents between 1.4 A abd 2.6 A (see the \u003ca href=\"#maxcurrent\"\u003emaximum continuous output current graph\u003c\/a\u003e below)\u003c\/li\u003e\n\n\u003cli\u003e Typical efficiency of 85% to 95%, depending on input voltage, output voltage, and load (see the \u003ca href=\"#efficiency\"\u003eefficiency graph\u003c\/a\u003e below)\u003c\/li\u003e\n\n\u003cli\u003e Switching frequency: ~400 kHz\u003c\/li\u003e\n\n\u003cli\u003e Integrated reverse-voltage protection, over-current and short-circuit protection, over-temperature shutoff, and soft-start\u003c\/li\u003e\n\n\u003cli\u003e 1 mA typical no-load quiescent current; this can be reduced to approximately 5 µA to 10 µA per volt on VIN by disabling the board (see the \u003ca href=\"#quiescent\"\u003equiescent current graph\u003c\/a\u003e below)\u003c\/li\u003e\n\n\u003cli\u003e “Power good” output indicates when the regulator cannot adequately maintain the output voltage\u003c\/li\u003e\n\n\t \u003cli\u003eCompact size: 0.7″ × 0.7″ × 0.31″ (17.8 mm × 17.8 mm × 8 mm)\u003c\/li\u003e\n\n\u003cli\u003e Two 0.086″ mounting holes for #2 or M2 \u003ca href=\"https:\/\/www.pololu.com\/category\/101\/nuts-and-screws\"\u003escrews\u003c\/a\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e Using the regulator\u003c\/h2\u003e\n\n\u003ch3\u003e Connections\u003c\/h3\u003e\n\n\u003cp\u003e These buck regulators have five main connection points for five different electrical nodes: power good (PG), enable (EN), input voltage (VIN), ground (GND), and output voltage (VOUT). The board also features a second ground connection point off the main row of connections that might be convenient for applications where you are soldering wires directly to the board rather than using it in a breadboard.\u003c\/p\u003e\n\n\u003ctable class=\"picture_with_caption center\"\u003e\u003ctr\u003e\n\n\u003ctd\u003e \u003ca href=\"https:\/\/a.pololu-files.com\/picture\/0J6802.1200.jpg?33c7f9ebee91074d21154ec88eeca63a\" class=\"noscript-fallback\"\u003e\u003cimg alt=\"\" class=\"zoomable\" data-gallery-pictures=\"[{\" id step-down voltage regulator d24v22fx top view with labeled pinout. data-picture-id=\"0J6802\" data-picture-longest_side=\"1200\" src=\"https:\/\/a.pololu-files.com\/picture\/0J6802.250.jpg?33c7f9ebee91074d21154ec88eeca63a\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/tr\u003e\u003c\/table\u003e\n\n \u003cp\u003eThe input voltage, \u003cstrong\u003eVIN\u003c\/strong\u003e , powers the regulator. Voltages between 4 V and 36 V can be applied to VIN, but for versions of the regulator that have an output voltage higher than 4 V, the effective lower limit of VIN is VOUT plus the regulator's dropout voltage, which varies approximately linearly with the load (see below for a graph of dropout voltages as a function of the load).\u003c\/p\u003e\n\n\u003cp\u003e The output voltage, \u003cstrong\u003eVOUT\u003c\/strong\u003e , is fixed and depends on the regulator version: the D24V22F3 version \u003ca href=\"https:\/\/www.pololu.com\/product\/2857\"\u003eoutputs 3.3 V\u003c\/a\u003e , the D24V22F5 version \u003ca href=\"https:\/\/www.pololu.com\/product\/2858\"\u003eoutputs 5 V\u003c\/a\u003e , the D24V22F6 version \u003ca href=\"https:\/\/www.pololu.com\/product\/2859\"\u003eoutputs 6 V\u003c\/a\u003e , the D24V22F7 version \u003ca href=\"https:\/\/www.pololu.com\/product\/2860\"\u003eoutputs 7.5 V\u003c\/a\u003e , the D24V22F9 version \u003ca href=\"https:\/\/www.pololu.com\/product\/2861\"\u003eoutputs 9 V\u003c\/a\u003e , and the D24V22F12 version \u003ca href=\"https:\/\/www.pololu.com\/product\/2855\"\u003eoutputs 12 V.\u003c\/a\u003e\u003c\/p\u003e\n\n \u003cp\u003eThe regulator is enabled by default: a 270 kΩ pull-up resistor on the board connects the \u003cstrong\u003eEN\u003c\/strong\u003e pin to reverse-protected VIN. The EN pin can be driven low (under 1 V) to put the board into a low-power state. The quiescent current draw in this sleep mode is dominated by the current in the pull-up resistor from EN to VIN and by the reverse-voltage protection circuit, which altogether will draw between 5 µA and 10 µA per volt on VIN when EN is held low. If you do not need this feature, you should leave the EN pin disconnected.\u003c\/p\u003e\n\n\u003cp\u003e The “power good” indicator, \u003cstrong\u003ePG\u003c\/strong\u003e , is an open-drain output that goes low when the regulator's output voltage falls below around 85% of the nominal voltage and becomes high-impedance when the output voltage rises above around 90%. An external pull-up resistor is required to use this pin. \u003c\/p\u003e\n\n\u003ctable class=\"side_by_side_pics\"\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e\u003ctable class=\"picture_with_caption center\"\u003e\n\n\u003ctr\u003e\u003ctd style=\"max-width: 308px\"\u003e \u003ca href=\"https:\/\/a.pololu-files.com\/picture\/0J6801.1200.jpg?7e5361fce5c85e6dc651b51d8d1208b9\" class=\"noscript-fallback\"\u003e\u003cimg alt=\"\" class=\"zoomable\" data-gallery-pictures=\"[{\" id step-down voltage regulator d24v22fx with included hardware. data-picture-id=\"0J6801\" data-picture-longest_side=\"1200\" src=\"https:\/\/a.pololu-files.com\/picture\/0J6801.308.jpg?7e5361fce5c85e6dc651b51d8d1208b9\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\n\n\u003ctr\u003e\u003cth style=\"max-width: 308px\"\u003e \u003cp\u003ePololu Step-Down Voltage Regulator D24V22Fx with included hardware. \u003c\/p\u003e\n\u003c\/th\u003e\u003c\/tr\u003e\n\n\n\u003c\/table\u003e\u003c\/td\u003e\n\n\u003ctd\u003e\u003ctable class=\"picture_with_caption center\"\u003e\n\n\u003ctr\u003e\u003ctd style=\"max-width: 250px\"\u003e \u003ca href=\"https:\/\/a.pololu-files.com\/picture\/0J6804.1200.jpg?1120a5175f00277fdd9a8d2aec62b1be\" class=\"noscript-fallback\"\u003e\u003cimg alt=\"\" class=\"zoomable\" data-gallery-pictures=\"[{\" id step-down voltage regulator d24v22fx bottom view. data-picture-id=\"0J6804\" data-picture-longest_side=\"1200\" src=\"https:\/\/a.pololu-files.com\/picture\/0J6804.250.jpg?1120a5175f00277fdd9a8d2aec62b1be\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\n\n\u003ctr\u003e\u003cth style=\"max-width: 250px\"\u003e\u003cp\u003e Pololu Step-Down Voltage Regulator D24V22Fx, bottom view.\u003c\/p\u003e\u003c\/th\u003e\u003c\/tr\u003e\n\n\n\u003c\/table\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/table\u003e\n\n\u003cp\u003e The five main connection points are labeled on the top of the PCB and are arranged with a 0.1″ spacing for compatibility with solderless \u003ca href=\"https:\/\/www.pololu.com\/category\/28\/solderless-breadboards\"\u003ebreadboards\u003c\/a\u003e , \u003ca href=\"https:\/\/www.pololu.com\/category\/19\/connectors\"\u003econnectors\u003c\/a\u003e , and other prototyping arrangements that use a 0.1″ grid. Either the included 5×1 \u003ca href=\"https:\/\/www.pololu.com\/product\/965\"\u003estraight male header strip\u003c\/a\u003e or the 5×1 \u003ca href=\"https:\/\/www.pololu.com\/product\/967\"\u003eright angle male header strip\u003c\/a\u003e can be soldered into these holes. For the most compact installation, you can solder wires directly to the board. \u003c\/p\u003e\n\n\u003ctable class=\"picture_with_caption center\"\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"max-width: 450px\"\u003e\u003cimg alt=\"\" class=\"\" data-gallery-pictures=\"[{\" id step-down voltage regulator d24v22fx side view. data-picture-id=\"0J6803\" data-picture-longest_side=\"1200\" src=\"https:\/\/a.pololu-files.com\/picture\/0J6803.450.jpg?10081bce1c1fb78772e2840b2a0e7e18\"\u003e\u003c\/td\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\u003cth style=\"max-width: 450px\"\u003e\u003cp\u003e Pololu Step-Down Voltage Regulator D24V22Fx, side view.\u003c\/p\u003e\u003c\/th\u003e\u003c\/tr\u003e\n\n\n\u003c\/table\u003e\n\n \u003cp\u003eThe board has two 0.086″ (2.18 mm) diameter mounting holes intended for #2 or M2 \u003ca href=\"https:\/\/www.pololu.com\/category\/101\/nuts-and-screws\"\u003escrews\u003c\/a\u003e . The mounting holes are at opposite corners of the board and are separated by 0.52″ (13.21 mm) both horizontally and vertically. For all the board dimensions, see the \u003ca href=\"\/en\/file\/0J1031\/d24v22fx-step-down-voltage-regulator-dimension-diagram.pdf\"\u003edimension diagram\u003c\/a\u003e (204k pdf).\u003c\/p\u003e\n\n\u003ch2\u003e\n\n Details for item #2859\n\n\u003c\/h2\u003e\n\n\u003ch3 id=\"efficiency\"\u003e Typical efficiency\u003c\/h3\u003e\n\n\u003cp\u003e The efficiency of a voltage regulator, defined as (Power out)\/(Power in), is an important measure of its performance, especially when battery life or heat are concerns. This family of switching regulators typically has an efficiency of 85% to 95%, though the actual efficiency in a given system depends on input voltage, output voltage, and output current. See the efficiency graph below for more information. \u003c\/p\u003e\n\n\u003ctable class=\"picture_with_caption center wide\"\u003e\u003ctr\u003e\n\n\u003ctd\u003e\u003cimg alt=\"\" class=\"wide\" data-gallery-pictures=\"[{\" id efficiency of pololu step-down voltage regulator d24v22f6. data-picture-id=\"0J6868\" data-picture-longest_side=\"600\" src=\"https:\/\/a.pololu-files.com\/picture\/0J6868.600.png?aa9fc3d613bcb6a9b6b7226b0bc7506a\"\u003e\u003c\/td\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/tr\u003e\u003c\/table\u003e\n\n\u003ch3 id=\"dropout\"\u003e Typical dropout voltage\u003c\/h3\u003e\n\n \u003cp\u003eThe dropout voltage of a step-down regulator is the minimum amount by which the input voltage must exceed the regulator's target output voltage in order to ensure the target output can be achieved. For example, if a 5 V regulator has a 1 V dropout voltage, the input must be at least 6 V to ensure the output is the full 5 V. Generally speaking, the dropout voltage increases as the output current increases. The graph below shows the dropout voltage at different output currents for the D24V22F6. \u003c\/p\u003e\n\n\u003ctable class=\"picture_with_caption center wide\"\u003e\u003ctr\u003e\n\n\u003ctd\u003e\u003cimg alt=\"\" class=\"wide\" data-gallery-pictures=\"[{\" id dropout voltage of pololu step-down regulator d24v22f6. data-picture-id=\"0J6872\" data-picture-longest_side=\"600\" src=\"https:\/\/a.pololu-files.com\/picture\/0J6872.600.png?7a66c4c2ab9ffe4d8b5cf040500cc106\"\u003e\u003c\/td\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/tr\u003e\u003c\/table\u003e\n\n\u003ch3 id=\"maxcurrent\"\u003e Maximum continuous output current\u003c\/h3\u003e\n\n\u003cp\u003e The maximum achievable output current of these regulators varies with the input voltage but also depends on other factors, including the ambient temperature, air flow, and heat sinking. The graph below shows maximum output currents that these regulators can deliver continuously at room temperature in still air and without additional heat sinking. \u003c\/p\u003e\n\n\u003ctable class=\"picture_with_caption center wide\"\u003e\u003ctr\u003e\n\n\u003ctd\u003e\u003cimg alt=\"\" class=\"wide\" data-gallery-pictures=\"[{\" id maximum continuous current of step-down voltage regulator d24v22fx. data-picture-id=\"0J10123\" data-picture-longest_side=\"600\" src=\"https:\/\/a.pololu-files.com\/picture\/0J10123.600.png?f036cae71fff11f9e4c7c97ea664e982\"\u003e\u003c\/td\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/tr\u003e\u003c\/table\u003e\n\n \u003cp class=\"note_warning clear\"\u003eDuring normal operation, this product can get hot enough to burn you. Take care when handling this product or other components connected to it.\u003c\/p\u003e\n\n\u003ch3 id=\"quiescent\"\u003e Quiescent current\u003c\/h3\u003e\n\n\u003cp\u003e The quiescent current is the current the regulator uses just to power itself, and the graph below shows this for the different regulator versions as a function of the input voltage. The module's EN input can be driven low to put the board into a low-power state where it typically draws between 5 µA and 10 µA per volt on VIN. \u003c\/p\u003e\n\n\u003ctable class=\"picture_with_caption center wide\"\u003e\u003ctr\u003e\n\n\u003ctd\u003e\u003cimg alt=\"\" class=\"wide\" data-gallery-pictures=\"[{\" id quiescent current of step-down voltage regulator d24v22fx. data-picture-id=\"0J10124\" data-picture-longest_side=\"600\" src=\"https:\/\/a.pololu-files.com\/picture\/0J10124.600.png?bc35ca0b5832039d176438d32e34fddd\"\u003e\u003c\/td\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/tr\u003e\u003c\/table\u003e","brand":"Pololu","offers":[{"title":"2-4 Weeks","offer_id":47696615407961,"sku":"POL-2859","price":18.96,"currency_code":"EUR","in_stock":true},{"title":"1 day","offer_id":47885969424729,"sku":"POL-2859\/A","price":18.96,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/1009\/7753\/files\/0J6898.1200.jpg?v=1705454732","url":"https:\/\/robot-italy.com\/en\/products\/2859-pololu-6v-2-5a-step-down-voltage-regulator-d24v22f6","provider":"Robot Italy","version":"1.0","type":"link"}