{"product_id":"adjustable-boost-regulator-25-95v-pololu","title":"Pololu Adjustable Boost Regulator 2.5-9.5V - Step-Up Converter","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eThe Pololu adjustable boost regulator is a very flexible switching regulator (also called a switched-mode power supply, SMPS, or DC-to-DC converter) that can generate voltages higher than its input voltage. We offer two adjustable ranges: approximately\u0026amp;nbsp;2.5\u0026amp;nbsp;V to 9.5\u0026amp;nbsp;V\u0026amp;nbsp;and\u0026amp;nbsp;4\u0026amp;nbsp;V to 25\u0026amp;nbsp;V. The output voltage can be set using the trimmer potentiometer in the upper-right corner of the board. The input voltage range is 1.5\u0026amp;nbsp;V to 16\u0026amp;nbsp;V (the input voltage should be kept below the output voltage). The integrated 2\u0026amp;nbsp;A switch allows for output currents high enough to drive small motors, as in our\u0026amp;nbsp;3pi robot, and allows large voltage gains, such as obtaining 24\u0026amp;nbsp;V from two NiMH or NiCd cells.\u003c\/p\u003e\n\u003cp\u003eSome example applications include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePowering 5\u0026amp;nbsp;V or 3.3\u0026amp;nbsp;V systems from lower-voltage batteries\u003c\/li\u003e\n\u003cli\u003ePowering 5\u0026amp;nbsp;V subsystems (e.g. sensors) in lower-voltage (e.g. 3.3\u0026amp;nbsp;V) systems\u003c\/li\u003e\n\u003cli\u003eAchieving consistent actuator operation when powered by fluctuating batteries\u003c\/li\u003e\n\u003cli\u003ePowering high-brightness LEDs or a large number of LEDs in series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u0026amp;nbsp;For high-volume applications, this product can be customized with fixed output voltages ranging from 2\u0026amp;nbsp;V to 30\u0026amp;nbsp;V.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/a.pololu-files.com\/picture\/0J1188.250.jpg?52b95a46f752f974cf021c5fca0db7e8\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFeature summary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003einput voltage: 1.5\u0026amp;nbsp;V to 16\u0026amp;nbsp;V\u003c\/li\u003e\n\u003cli\u003eoutput adjustable from\u0026amp;nbsp;2.5\u0026amp;nbsp;V to 9.5\u0026amp;nbsp;V\u0026amp;nbsp;or\u0026amp;nbsp;4\u0026amp;nbsp;V to 25\u0026amp;nbsp;V\u003c\/li\u003e\n\u003cli\u003e750 kHz switching frequency\u003c\/li\u003e\n\u003cli\u003e2\u0026amp;nbsp;A switch (and input) limit\u003c\/li\u003e\n\u003cli\u003eintegrated over-temperature and over-current shutoff\u003c\/li\u003e\n\u003cli\u003etypical efficiency of 80-90% when doubling voltage and with 100-500\u0026amp;nbsp;mA output\u003c\/li\u003e\n\u003cli\u003esmall size: 10.7\u0026amp;nbsp;x\u0026amp;nbsp;22.4\u0026amp;nbsp;x\u0026amp;nbsp;5.8\u0026amp;nbsp;mm (0.42\u0026amp;Prime;\u0026amp;nbsp;x\u0026amp;nbsp;0.88\u0026amp;Prime;\u0026amp;nbsp;x\u0026amp;nbsp;0.23\u0026amp;Prime;)\u003c\/li\u003e\n\u003cli\u003eweight without header pins: 1.6\u0026amp;nbsp;g (0.06\u0026amp;nbsp;oz)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eUsing the Boost Regulator\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/a.pololu-files.com\/picture\/0J1189.250.jpg?4fd34db541fb49c6bf1c920e75b48221\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eConnections\u003c\/h3\u003e\n\u003cp\u003eThe boost regulator has just three connections: the input voltage, ground, and the output voltage. These three connections are labeled on the back side of the PCB, and they are arranged with a 0.1\u0026amp;Prime; spacing along the edge of the board for compatibility with standard\u0026amp;nbsp;solderless breadboards\u0026amp;nbsp;and perfboards and\u0026amp;nbsp;connectors\u0026amp;nbsp;that use a 0.1\u0026amp;Prime; grid. You can solder wires directly to the board or solder in either the 3\u0026amp;times;1\u0026amp;nbsp;straight male header stripor the 3\u0026amp;times;1\u0026amp;nbsp;right-angle male header strip\u0026amp;nbsp;that is included.\u003c\/p\u003e\n\u003ch3\u003eSetting the output voltage\u003c\/h3\u003e\n\u003cp\u003eThe output voltage can be adjusted using a meter and a light load (e.g. a 10\u0026amp;nbsp;k\u0026amp;Omega; resistor). Turning the potentiometer clockwise increases the output voltage. The output voltage can be affected by a screwdriver touching the potentiometer, so the output measurement should be done with nothing touching the potentiometer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarning:\u003c\/strong\u003e\u0026amp;nbsp;\u003cins\u003eYou should be careful not to use an input voltage that exceeds the output voltage setting\u003c\/ins\u003e, so we recommend setting the output voltage with the input voltage around or below 2.5\u0026amp;nbsp;V (e.g. using one or two alkaline batteries). Note that the potentiometer has no physical end stops, which means that the wiper can be turned 360 degrees and into an invalid region in which the output voltage is set to approximately 2.5\u0026amp;nbsp;V (for both the 2.5\u0026amp;nbsp;V to 9.5\u0026amp;nbsp;V and 4\u0026amp;nbsp;V to 25\u0026amp;nbsp;V versions).\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/a.pololu-files.com\/picture\/0J1196.400.jpg?115212918319d9c1466fd625ad5b04dc\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\n\u003cp\u003eOutput voltage settings for the adjustable boost regulators.\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe\u0026amp;nbsp;\u003cstrong\u003eabsolute limit\u003c\/strong\u003e\u0026amp;nbsp;for the input voltage is\u0026amp;nbsp;\u003cins\u003edouble the output voltage setting\u003c\/ins\u003e. For example, if the output is set to 6\u0026amp;nbsp;V, the input must not exceed 12\u0026amp;nbsp;V. Once the input exceeds the output set point, the output voltage will rise with the input voltage since the input is connected to the output through an inductor and a diode.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u0026amp;nbsp;The trimmer potentiometer is not rated for continual adjustment back and forth; the intended application is to set the output voltage a few times in its life.\u003c\/p\u003e\n\u003ch3\u003eEfficiency and available output current\u003c\/h3\u003e\n\u003cp\u003eThe available output current depends on the input and output voltages. The input current is limited to approximately 2\u0026amp;nbsp;A, and, as shown in the graphs below, the efficiency is typically 80% to 90%. Therefore, the maximum available current will be approximately 800\u0026amp;nbsp;mA when doubling the input voltage and approximately 400 mA when quadrupling the input voltage. At high output powers, the 20% lost in the regulator will cause substantial heating, which can limit the available output power (the regulator will automatically shut off if its internal temperature gets too high). At low output currents and high input and output voltages, the efficiency drops closer to 50%, though the lower power involved prevents heating from being an issue. Some output voltages shown in the efficiency graphs below can only be achieved using the\u0026amp;nbsp;4-25V adjustable boost regulator.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/a.pololu-files.com\/picture\/0J2852.400.jpg?3fad1960ef2a77c058e3d494b51f2dc7\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/a.pololu-files.com\/picture\/0J2853.400.jpg?7a7622ccc995c0dfa978fdcba991dbc8\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/a.pololu-files.com\/picture\/0J2854.400.jpg?a90c4d7ad59aa4af260459a14e29c67c\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eLC Voltage Spikes\u003c\/h3\u003e\n\u003cp\u003eWhen connecting voltage to electronic circuits, the initial rush of current can cause voltage spikes that are much higher than the input voltage. If these spikes exceed the regulator\u0026amp;rsquo;s absolute maximum voltage (16\u0026amp;nbsp;V), the regulator can be destroyed. If you are connecting more than approximately 10\u0026amp;nbsp;V or your power leads or supply has high inductance (e.g. your input leads are longer than a few inches), we recommend soldering a 33\u0026amp;mu;F or larger electrolytic capacitor close to the regulator between VIN and GND. The capacitor should be rated for at least 25\u0026amp;nbsp;V.\u003c\/p\u003e\n\u003ch2\u003eDimensions\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSize:\u003c\/th\u003e\n\u003ctd\u003e0.42\u0026amp;Prime; \u0026amp;times; 0.88\u0026amp;Prime; \u0026amp;times; 0.23\u0026amp;Prime;\u003csup\u003e1\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight:\u003c\/th\u003e\n\u003ctd\u003e1.6 g\u003csup\u003e1\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eGeneral specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum operating voltage:\u003c\/th\u003e\n\u003ctd\u003e1.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum operating voltage:\u003c\/th\u003e\n\u003ctd\u003e9.5 V\u003csup\u003e2\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum input current:\u003c\/th\u003e\n\u003ctd\u003e2 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum output voltage:\u003c\/th\u003e\n\u003ctd\u003e2.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum output voltage:\u003c\/th\u003e\n\u003ctd\u003e9.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReverse voltage protection?:\u003c\/th\u003e\n\u003ctd\u003eN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum quiescent current:\u003c\/th\u003e\n\u003ctd\u003e6 mA\u003csup\u003e3\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eIdentifying markings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePCB dev codes:\u003c\/th\u003e\n\u003ctd\u003ereg03a\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOther PCB markings:\u003c\/th\u003e\n\u003ctd\u003e0J1213\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eNotes:\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003e1\u003c\/dt\u003e\n\u003cdd\u003eWithout included optional headers.\u003c\/dd\u003e\n\u003cdt\u003e2\u003c\/dt\u003e\n\u003cdd\u003eThe operating voltage should not exceed the set output voltage, VOUT.\u003c\/dd\u003e\n\u003cdt\u003e3\u003c\/dt\u003e\n\u003cdd\u003eWith no load. Actual quiescent current ranges from 2 to 6\u0026amp;nbsp;mA depending on input voltage and output voltages.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003eFind out if it's normal to have cramps during ovulation, on this great post about women's ovulation and fertility.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"Pololu","offers":[{"title":"Default Title","offer_id":45813725200673,"sku":"POL791","price":595.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/Adjustable_20Boost_20Regulator_202.5-9.5V_20Pololu-0.jpg?v=1689672687","url":"https:\/\/circuit.rocks\/products\/adjustable-boost-regulator-25-95v-pololu","provider":"circuitrocks","version":"1.0","type":"link"}