{"product_id":"2836-pololu-5v-step-up-step-down-voltage-regulator-s9v11f5","title":"2836 - Pololu 5V Step-Up\/Step-Down Voltage Regulator S9V11F5","description":"\u003cp\u003e\u003cspan\u003eThe S9V11F5 switching step-up\/step-down regulator efficiently produces 5 V from input voltages between 2 V and 16 V. (Note: it requires an input voltage of at least 3 V to start, but it can operate down to 2 V after startup.) Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below 5 V. The very compact (0.3″ × 0.45″) module has a typical efficiency of over 90% and can supply a typical output current of up to 1.5 A when the input voltage is around 5 V.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Pololu step-up\/step-down voltage regulator S9V11F5 is a switching regulator (also called a switched-mode power supply (SMPS) or DC-to-DC converter) that uses a buck-boost topology. It takes an input voltage from 2 V to 16 V and increases or decreases the voltage to a fixed 5 V output with a typical efficiency of over 90%. Note that this regulator requires an input voltage of at least 3 V to start, but it can operate down to 2 V after startup. Additionally, note that the startup current is limited to approximately 700 mA until the output voltage reaches 5 V; after startup, the available current is a function of the input voltage (see the \u003cem\u003eTypical Efficiency and Output Current\u003c\/em\u003e section below).\u003c\/p\u003e\n\u003cp\u003eThe flexibility in input voltage offered by this regulator is especially well-suited for battery-powered applications in which the battery voltage begins above 5 V and drops below as the battery discharges. Without the typical restriction on the battery voltage staying above the required voltage throughout its life, new battery packs and form factors can be considered. For instance, a 4-cell battery holder, which might have a 6 V output with fresh alkalines but a 4.8 V nominal voltage with NiMH cells and a 4.0 V output with partially discharged cells, can now be used for a 5 V circuit. In another typical scenario, a disposable 9V battery powering a 5 V circuit can be discharged to under 3 V instead of cutting out at 6 V, as with typical linear or step-down regulators.\u003c\/p\u003e\n\u003cp\u003eThe regulator has short-circuit protection, and thermal shutdown prevents damage from overheating; the board does \u003cstrong\u003enot\u003c\/strong\u003e have reverse-voltage protection.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInput voltage: 2 V to 16 V (note: this regulator requires 3 V to start, but it can operate down to 2 V after startup)\u003c\/li\u003e\n\u003cli\u003eFixed 5 V output with +5\/-3% accuracy\u003c\/li\u003e\n\u003cli\u003eTypical maximum continuous output current: 1.5 A (when input voltage is around 5 V; the \u003cem\u003eTypical Efficiency and Output Current\u003c\/em\u003e section below shows how the achievable continuous output current depends on the input voltage)\u003c\/li\u003e\n\u003cli\u003ePower-saving feature maintains high efficiency at low currents (quiescent current is less than 0.2 mA)\u003c\/li\u003e\n\u003cli\u003eIntegrated over-temperature and short-circuit protection\u003c\/li\u003e\n\u003cli\u003eSmall size: 0.3″ × 0.45″ × 0.15″ (7.6 × 11.4 × 3.8 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eUsing the Regulator\u003c\/h2\u003e\n\u003cp class=\"note_warning\"\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\u003ch3\u003eConnections\u003c\/h3\u003e\n\u003cp\u003eThe step-up\/step-down regulator has just three connections: the input voltage (VIN), ground (GND), and the output voltage (VOUT). These through-holes are arranged with a 0.1″ spacing along the edge of the board for compatibility with standard solderless breadboards and perfboards and connectors that use a 0.1″ grid. You can solder wires directly to the board or solder in either the 3×1 straight male header strip or the 3×1 right-angle male header strip that is included. VOUT is labeled on the silkscreen on one side of the board, and GND is in the middle and can be identified by its square pad.\u003c\/p\u003e\n\u003cp\u003eThe input voltage, VIN, should be between 3 V and 16 V when the regulator is first powered. After it is running, it can continue operating down to 2 V. Lower inputs can shut down the voltage regulator; \u003cins\u003ehigher inputs can destroy the regulator\u003c\/ins\u003e, so you should ensure that noise on your input is not excessive, and you should be wary of destructive LC spikes (see below for more information).\u003c\/p\u003e\n\u003cp\u003eThe output voltage, VOUT, is regulated to a fixed 5 V, but it can be as high as 5.2 V when there is little or no load on the regulator.\u003c\/p\u003e\n\u003ch3 class=\"clear\"\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’s maximum voltage, the regulator can be destroyed. If you are connecting more than about 12 V, using power leads more than a few inches long, or using a power supply with high inductance, we recommend soldering a 33 μF or larger electrolytic capacitor close to the regulator between VIN and GND. The capacitor should be rated for at least 20 V.\u003c\/p\u003e\n\u003cp\u003eMore information about LC spikes can be found in our application note, \u003ca href=\"https:\/\/www.pololu.com\/docs\/0J16\" target=\"_blank\"\u003eUnderstanding Destructive LC Voltage Spikes\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eDimensions\u003c\/h2\u003e\n\u003ctable class=\"specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth\u003eSize:\u003c\/th\u003e\n\u003ctd\u003e0.3″ × 0.45″ × 0.15″\u003csup\u003e1\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth\u003eWeight:\u003c\/th\u003e\n\u003ctd\u003e0.5 g\u003csup\u003e\u003ca href=\"https:\/\/www.pololu.com\/product\/2836\/specs#note1\"\u003e1\u003c\/a\u003e\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 class=\"specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth\u003eMinimum operating voltage:\u003c\/th\u003e\n\u003ctd\u003e2 V\u003csup\u003e2\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth\u003eMaximum operating voltage:\u003c\/th\u003e\n\u003ctd\u003e16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth\u003eMaximum output current:\u003c\/th\u003e\n\u003ctd\u003e1.5 A\u003csup\u003e3\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth\u003eOutput voltage:\u003c\/th\u003e\n\u003ctd\u003e5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth\u003eReverse voltage protection?:\u003c\/th\u003e\n\u003ctd\u003eN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth\u003eMaximum quiescent current:\u003c\/th\u003e\n\u003ctd\u003e0.2 mA\u003csup\u003e4\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 class=\"specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"even\"\u003e\n\u003cth\u003ePCB dev codes:\u003c\/th\u003e\n\u003ctd\u003ereg20a\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"odd\"\u003e\n\u003cth\u003eOther PCB markings:\u003c\/th\u003e\n\u003ctd\u003e0J10393\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eNotes:\u003c\/h2\u003e\n\u003cdl class=\"specification_notes\"\u003e\n\u003cdt\u003e\n\u003ca name=\"note1\"\u003e\u003c\/a\u003e1 Without included optional headers.\u003c\/dt\u003e\n\u003cdt\u003e\n\u003ca name=\"note2\"\u003e\u003c\/a\u003e2 Note: the minimum startup voltage is 3V, but the regulator can operate down to 2V after startup.\u003c\/dt\u003e\n\u003cdt\u003e\n\u003ca name=\"note3\"\u003e\u003c\/a\u003e3 Under typical conditions, where the input voltage is close to the output voltage. Maximum output current can be higher when stepping down and lower when stepping up.\u003c\/dt\u003e\n\u003cdt\u003e\n\u003ca name=\"note4\"\u003e\u003c\/a\u003e4 With no load. Actual quiescent current depends on input voltage; it is typically under 100 µA for input voltages less than 7 V.\u003c\/dt\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eFile downloads\u003c\/h2\u003e\n\u003cdl class=\"attached_files\"\u003e\n\u003cdt\u003e\n\u003ca href=\"https:\/\/www.pololu.com\/file\/0J1272\/pololu-5v-step-up-step-down-voltage-regulator-s9v11f5-dimensions.pdf\" target=\"_blank\"\u003eDimension diagram of the Pololu 5V Step-Up\/Step-Down Voltage Regulator S9V11F5\u003c\/a\u003e (138k pdf)\u003c\/dt\u003e\n\u003cdd\u003e\u003c\/dd\u003e\n\u003cdt\u003e\n\u003ca href=\"https:\/\/www.pololu.com\/file\/0J1273\/pololu-5v-step-up-step-down-voltage-regulator-s9v11f5.step\" target=\"_blank\"\u003e3D model of the Pololu 5V Step-Up\/Step-Down Voltage Regulator S9V11F5\u003c\/a\u003e (3MB step)\u003c\/dt\u003e\n\u003cdd\u003e\u003c\/dd\u003e\n\u003cdt\u003e\n\u003ca href=\"https:\/\/www.pololu.com\/file\/0J1271\/reg20a-drill.dxf\" target=\"_blank\"\u003eDrill guide for the Pololu 5V Step-Up\/Step-Down Voltage Regulator S9V11F5\u003c\/a\u003e (16k dxf)\u003c\/dt\u003e\n\u003cdd\u003eThis DXF drawing shows the locations of all of the board’s holes.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Pololu","offers":[{"title":"Default Title","offer_id":48097983856985,"sku":"342836","price":16.5,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/1009\/7753\/files\/0j7675.1200_02439a4e-b07e-4305-9eb2-36874098ad8a.jpg?v=1712340872","url":"https:\/\/robot-italy.com\/products\/2836-pololu-5v-step-up-step-down-voltage-regulator-s9v11f5","provider":"Robot Italy","version":"1.0","type":"link"}