{"product_id":"2114-pololu-3-3v-step-up-voltage-regulator-ncp1402","title":"Pololu 3.3V Step-Up Voltage Regulator NCP1402","description":"\u003cp\u003e This compact step-up (or boost) regulator generates 3.3 V from voltages as low as 0.8 V and delivers up to 200 mA, making it perfect for powering small 3.3 V electronics projects from one or two NiMH, NiCd, or alkaline cells.\u003c\/p\u003e\n\n\u003cbr\u003e\u003cp class=\"note_warning\"\u003e \u003cstrong\u003eDiscontinuation notice:\u003c\/strong\u003e The NCP1402 IC used by this voltage regulator has been discontinued by the manufacturer. We strongly recommend our newer \u003ca href=\"https:\/\/www.pololu.com\/product\/2564\"\u003e\u003cstrong\u003e5V U1V10F5\u003c\/strong\u003e\u003c\/a\u003e and \u003ca href=\"https:\/\/www.pololu.com\/product\/2563\"\u003e\u003cstrong\u003e3.3V U1V10F3\u003c\/strong\u003e\u003c\/a\u003e boost regulators as alternatives. The U1V10Fx voltage regulators are smaller, more efficient, have a lower minimum operating voltage, and can deliver significantly more current than the NCP1402-based regulators. These newer regulators also automatically switch into linear down-regulation mode when the input voltage exceeds the output.\u003c\/p\u003e\n\n\u003ctable class=\"picture_with_caption right\"\u003e\u003ctr\u003e\n\n \u003ctd\u003e\n\u003ca href=\"https:\/\/a.pololu-files.com\/picture\/0J1186.1200.jpg?d8ae1b58561e77515f6fe61575be7e02\" class=\"noscript-fallback\"\u003e\u003cimg alt=\"\" class=\"zoomable\" data-gallery-pictures=\"[{\" id step-up voltage regulator ncp1402 bottom view with dimensions. data-picture-id=\"0J1186\" data-picture-longest_side=\"385\" src=\"https:\/\/a.pololu-files.com\/picture\/0J1186.250.jpg?d8ae1b58561e77515f6fe61575be7e02\"\u003e\u003c\/a\u003e \u003c\/td\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/tr\u003e\u003c\/table\u003e\n\n\u003ctable class=\"picture_with_caption right\"\u003e\u003ctr\u003e\u003ctd\u003e \u003ca href=\"https:\/\/a.pololu-files.com\/picture\/0J1182.1200.jpg?a0baeccda2f65d61e809b3ad7e777807\" class=\"noscript-fallback\"\u003e\u003cimg alt=\"\" class=\"zoomable\" data-gallery-pictures=\"[{\" id step-up voltage regulator ncp1402 with included hardware. data-picture-id=\"0J1182\" data-picture-longest_side=\"800\" src=\"https:\/\/a.pololu-files.com\/picture\/0J1182.300.jpg?a0baeccda2f65d61e809b3ad7e777807\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/table\u003e\n\n\u003ctable class=\"picture_with_caption right\"\u003e\u003ctr\u003e\u003ctd\u003e \u003ca href=\"https:\/\/a.pololu-files.com\/picture\/0J1183.1200.jpg?4d971d69edb63838b6b7f5b6fe75119c\" class=\"noscript-fallback\"\u003e\u003cimg alt=\"\" class=\"zoomable\" data-gallery-pictures=\"[{\" id step-up voltage regulator ncp1402 in a breadboard. data-picture-id=\"0J1183\" data-picture-longest_side=\"800\" src=\"https:\/\/a.pololu-files.com\/picture\/0J1183.300.jpg?4d971d69edb63838b6b7f5b6fe75119c\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/table\u003e\n\n\u003ch2\u003e Overview\u003c\/h2\u003e\n\n\u003cp\u003e These tiny boost (step-up) switching regulators are based on the NCP1402 boost regulator IC. Their small dimensions of just 0.33″ × 0.5″ (8.4 mm × 12.7 mm) and a startup voltage of down to 0.8 V make it easy to build 3.3 V and 5 V circuits that are powered by lower battery voltages. The available output current and output voltage ripple depend on the input voltage (see \u003cem\u003eTypical Efficiency and Output Current\u003c\/em\u003e section below), but the regulator can provide up to 200 mA if the input voltage is high enough.\u003c\/p\u003e\n\n \u003cp\u003eWith low input voltages, the output voltage ripple is under 40 mV peak-to-peak. When the input voltage is close to the output, the output ripple quickly climbs to 150 mV peak-to-peak. Therefore, adding capacitance from the output to ground is recommended for noise-sensitive applications with input voltages close to the output voltage.\u003c\/p\u003e\n\n\u003cp\u003e Some example applications include:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Powering 3.3 V or 5 V systems from lower-voltage batteries.\u003c\/li\u003e\n\n\u003cli\u003e Powering higher-voltage subsystems in lower-voltage systems (eg powering a 5 V sensor in a 3.3 V system).\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e This regulator is available with a fixed \u003ca href=\"https:\/\/www.pololu.com\/product\/2114\"\u003e3.3 V\u003c\/a\u003e or \u003ca href=\"https:\/\/www.pololu.com\/product\/798\"\u003e5 V\u003c\/a\u003e output.\u003c\/p\u003e\n\n \u003cp\u003eFor higher-power applications, consider using one of our \u003ca href=\"https:\/\/www.pololu.com\/product\/791\"\u003eadjustable boost regulators\u003c\/a\u003e or our \u003ca href=\"https:\/\/www.pololu.com\/product\/2115\"\u003eU3V12Fx boost regulators\u003c\/a\u003e . For a regulator that supports similarly low input voltages but higher currents, consider our \u003ca href=\"https:\/\/www.pololu.com\/product\/2560\"\u003eU1V11x boost regulators\u003c\/a\u003e , which offer features that the rest of our boost regulators lack, such as a true shutdown and automatic linear down-regulation when the input voltage exceeds the output voltage .\u003c\/p\u003e\n\n\u003ch2\u003e Using the Boost Regulator\u003c\/h2\u003e\n\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″ spacing along the edge of the board for compatibility with standard \u003ca href=\"https:\/\/www.pololu.com\/category\/28\/solderless-breadboards\"\u003esolderless breadboards\u003c\/a\u003e and perfboards and \u003ca href=\"https:\/\/www.pololu.com\/category\/19\/connectors\"\u003econnectors\u003c\/a\u003e that use a 0.1″ grid. You can solder wires directly to the board or solder in either the 3×1 \u003ca href=\"https:\/\/www.pololu.com\/product\/965\"\u003estraight male header strip\u003c\/a\u003e or the 3×1 \u003ca href=\"https:\/\/www.pololu.com\/product\/967\"\u003eright-angle male header strip\u003c\/a\u003e that are included.\u003c\/p\u003e\n\n\u003ch2\u003e Feature summary\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e Operating voltage: 0.8 V – VOUT\u003c\/li\u003e\n\n\u003cli\u003e 3.3 V or 5.0 V output with 2.5% accuracy\u003c\/li\u003e\n\n\u003cli\u003e \u0026lt;3 mA typical no-load quiescent current\u003c\/li\u003e\n\n\u003cli\u003e Small size: 8.4 mm × 12.7 mm × 3.8 mm (0.33″ × 0.50″ × 0.15″)\u003c\/li\u003e\n\n\u003cli\u003e Weight without header pins: 0.6 g (0.02 oz) \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ctable class=\"picture_with_caption center wide\"\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"max-width: 600px\"\u003e\u003cimg alt=\"\" class=\"wide\" data-gallery-pictures=\"[{\" id step-up voltage regulator ncp1402 schematic diagram. data-picture-id=\"0J1185\" data-picture-longest_side=\"600\" src=\"https:\/\/a.pololu-files.com\/picture\/0J1185.600.png?07f7fb122b779aa340a4d95763c84550\"\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: 600px\"\u003e \u003cp\u003ePololu step-up voltage regulator NCP1402 schematic diagram.\u003c\/p\u003e\n\u003c\/th\u003e\u003c\/tr\u003e\n\n\n\u003c\/table\u003e\n\n\u003ch3\u003e Typical Efficiency and Output Current\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. As shown in the graphs below, this switching regulator typically has an efficiency of 75% to 90%. \u003c\/p\u003e\n\n\u003cdiv style=\"float:left;\"\u003e\n\n\u003ctable class=\"picture_with_caption center\"\u003e\u003ctr\u003e\n\n\u003ctd\u003e \u003ca href=\"https:\/\/a.pololu-files.com\/picture\/0J4292.1200.png?e9da1460f8daacf371139fd4fc0c07aa\" class=\"noscript-fallback\"\u003e\u003cimg alt=\"\" class=\"zoomable\" data-gallery-pictures=\"[{\" id efficiency of pololu step-up voltage regulator ncp1402. data-picture-id=\"0J4292\" data-picture-longest_side=\"600\" src=\"https:\/\/a.pololu-files.com\/picture\/0J4292.400.jpg?e9da1460f8daacf371139fd4fc0c07aa\"\u003e\u003c\/a\u003e \u003c\/td\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\n\u003c\/tr\u003e\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv style=\"float:left;\"\u003e\n\n\u003ctable class=\"picture_with_caption center\"\u003e\u003ctr\u003e\n\n\u003ctd\u003e \u003ca href=\"https:\/\/a.pololu-files.com\/picture\/0J4293.1200.png?426ee73613a1f9ef93052ce980149977\" class=\"noscript-fallback\"\u003e\u003cimg alt=\"\" class=\"zoomable\" data-gallery-pictures=\"[{\" id efficiency of pololu step-up voltage regulator ncp1402. data-picture-id=\"0J4293\" data-picture-longest_side=\"600\" src=\"https:\/\/a.pololu-files.com\/picture\/0J4293.400.jpg?426ee73613a1f9ef93052ce980149977\"\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\n\u003c\/div\u003e\n\n \u003cp class=\"clear\"\u003eThe maximum achievable output current is approximately proportional to the ratio of the input voltage to the output voltage. With a 0.8 V input, approximately 5 mA are available before the output voltage begins dropping. The full 200 mA output can be realized from input voltages over approximately 2.4 V (3.3 V version) or 2.7 V (5 V version). Additionally, the maximum output current can depend on other factors, including the ambient temperature, air flow, and heat sinking.\u003c\/p\u003e\n\n\u003ch3\u003e LC Voltage Spikes\u003c\/h3\u003e\n\n\u003cp\u003e When connecting voltage to electronic circuits, the initial rush of current can cause damaging voltage spikes that are much higher than the input voltage. In our tests with typical power leads (~30″ test clips), input voltages above 4 V caused voltage spikes in excess of 6 V, the absolute maximum voltage of the NCP1402. You can suppress such spikes by soldering a 33 μF or larger electrolytic capacitor close to the regulator between VIN and GND.\u003c\/p\u003e\n\n \u003cp\u003eMore information about LC spikes can be found in our application note, \u003ca href=\"https:\/\/www.pololu.com\/docs\/0J16\"\u003eUnderstanding Destructive LC Voltage Spikes\u003c\/a\u003e .\u003c\/p\u003e","brand":"Pololu","offers":[{"title":"2-4 Weeks","offer_id":47696737010009,"sku":"POL-2114","price":11.64,"currency_code":"EUR","in_stock":true},{"title":"1 day","offer_id":47886009270617,"sku":"POL-2114\/A","price":11.64,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/1009\/7753\/files\/0J4330.1200.jpg?v=1705457056","url":"https:\/\/robot-italy.com\/en\/products\/2114-pololu-3-3v-step-up-voltage-regulator-ncp1402","provider":"Robot Italy","version":"1.0","type":"link"}