{"product_id":"pololu-5v-5-5a-step-down-voltage-regulator-d36v50f5","title":"Pololu 5V 5.5A Step-Down Voltage Regulator (D36V50F5)","description":"\u003cp\u003eThe D36V50Fx family of buck (step-down) voltage regulators from \u003ca href=\"\/nl\/collections\/pololu\"\u003ePololu\u003c\/a\u003e generates lower output voltages from \u003cstrong\u003einput voltages as high as 50V\u003c\/strong\u003e. This particular model offers an \u003cstrong\u003eoutput of 5V with a continuous output current of 5.5A\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThey are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters), which makes them much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large.\u003c\/p\u003e\n\u003cp\u003eThis family of regulators \u003cstrong\u003ecan typically support continuous output currents between 2A and 9A\u003c\/strong\u003e, depending on the input voltage and output voltage (see the Maximum continuous output current section 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\u003cp\u003eThe regulators have \u003cstrong\u003einput reverse voltage protection up to 40V\u003c\/strong\u003e, output \u003cstrong\u003eundervoltage and overvoltage protection\u003c\/strong\u003e, \u003cstrong\u003eover-current protection\u003c\/strong\u003e, and \u003cstrong\u003eshort-circuit protection\u003c\/strong\u003e. A \u003cstrong\u003ethermal shutdown feature\u003c\/strong\u003e also helps prevent damage from overheating and a soft-start feature limits the inrush current and gradually ramps the output voltage on startup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarning: During normal operation, this product can get hot enough to burn you. Take care when handling this product or other components connected to it.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eInput voltage: 5.5V to 50V\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutput voltage: 5V with 4% accuracy\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical maximum continuous output current: 3.5A to 8A\u003c\/strong\u003e (see the maximum continuous output current graph below)\u003c\/li\u003e\n\u003cli\u003eTypical efficiency of 80% to 95%, depending on input voltage, output voltage, and load (see the efficiency graph below)\u003c\/li\u003e\n\u003cli\u003eSwitching frequency: ~500 kHz under heavy loads\u003c\/li\u003e\n\u003cli\u003ePower-save mode with ultrasonic operation that increases light load efficiency by reducing switching frequency, but keeps it above the audible range (20 kHz)\u003c\/li\u003e\n\u003cli\u003e2 mA to 4 mA typical no-load quiescent current (see the quiescent current graph below)\u003c\/li\u003e\n\u003cli\u003eEnable input with precise cutoff threshold for disconnecting the load and putting the regulator into a low-power state that draws approximately 10 µA to 20 µA per volt on VIN\u003c\/li\u003e\n\u003cli\u003e“Power good” output indicates when the regulator cannot adequately maintain the output voltage\u003c\/li\u003e\n\u003cli\u003eOutput undervoltage and overvoltage protection\u003c\/li\u003e\n\u003cli\u003eSoft-start feature limits inrush current and gradually ramps output voltage\u003c\/li\u003e\n\u003cli\u003eIntegrated reverse-voltage protection up to 40 V, over-current and short-circuit protection, over-temperature shutoff\u003c\/li\u003e\n\u003cli\u003eCompact size: 25.4 mm × 25.4 mm × 9.5 mm\u003c\/li\u003e\n\u003cli\u003eThree 0.086″ mounting holes for #2 or M2 screws\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable width=\"421\" style=\"height: 162px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003ctd style=\"height: 18px; width: 268.453px;\"\u003eMinimum operating voltage\u003c\/td\u003e\n\u003ctd style=\"height: 18px; width: 142.547px;\"\u003e5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003ctd style=\"height: 18px; width: 268.453px;\"\u003eMaximum operating voltage\u003c\/td\u003e\n\u003ctd style=\"height: 18px; width: 142.547px;\"\u003e50V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003ctd style=\"height: 18px; width: 268.453px;\"\u003e\u003cstrong\u003eContinuous output current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 18px; width: 142.547px;\"\u003e\u003cstrong\u003e5.5A\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003ctd style=\"height: 18px; width: 268.453px;\"\u003e\u003cstrong\u003eOutput voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"height: 18px; width: 142.547px;\"\u003e\u003cstrong\u003e5V\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003ctd style=\"height: 18px; width: 268.453px;\"\u003eReverse voltage protection?\u003c\/td\u003e\n\u003ctd style=\"height: 18px; width: 142.547px;\"\u003eY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003ctd style=\"height: 18px; width: 268.453px;\"\u003eMaximum quiescent current\u003c\/td\u003e\n\u003ctd style=\"height: 18px; width: 142.547px;\"\u003e4mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003ctd style=\"height: 18px; width: 268.453px;\"\u003eOutput type\u003c\/td\u003e\n\u003ctd style=\"height: 18px; width: 142.547px;\"\u003eFixed 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003ctd style=\"height: 18px; width: 268.453px;\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"height: 18px; width: 142.547px;\"\u003e1″ × 1″ × 0.375″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18px;\"\u003e\n\u003ctd style=\"height: 18px; width: 268.453px;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"height: 18px; width: 142.547px;\"\u003e7.0g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eUsing the regulator\u003c\/h2\u003e\n\u003ch3\u003eConnections\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/pololu-4090-pinout_1.jpg?v=1718797547\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eThis regulator has six connections, some of which are duplicated on multiple pins: power good (PG), enable (EN), input voltage (VIN), input voltage after reverse protection (VRP), output voltage (VOUT), and ground (GND).\u003c\/p\u003e\n\u003cp\u003eThe “power good” indicator, PG, is an open-drain output that goes low when the regulator’s output voltage either rises more than 20% above or falls more than 10% below the nominal voltage (with hysteresis). An external pull-up resistor is required to use this pin.\u003c\/p\u003e\n\u003cp\u003eThe regulator, which is enabled by default, can be put into a low-power sleep state by reducing the voltage on the EN pin below 1.2V, and it can be brought out of this state again by increasing the voltage on EN past 1.35V. The quiescent current draw in this sleep mode is dominated by the current in the 100kΩ pull-up resistor from ENABLE to VIN and in the reverse-voltage protection circuit, which altogether will be between 10µA and 20µA per volt on VIN. The tight tolerance of the enable input allows a precise low-VIN cutoff to be set, such as with the output of an external voltage divider powered by VIN, which is useful for battery-powered applications where draining the battery below a particular voltage threshold could permanently damage it.\u003c\/p\u003e\n\u003cp\u003eThe input voltage, VIN, powers the regulator. Voltages between 4.5V and 50V can be applied to VIN, but generally, the effective lower limit of VIN is VOUT plus the regulator’s dropout voltage, which varies approximately linearly with the load (see below for graphs of the dropout voltage as a function of the load).\u003c\/p\u003e\n\u003cp\u003eVRP provides access to the input voltage after reverse-voltage protection; this can be used as an output to power other devices, or the input voltage can be connected to VRP instead of VIN to bypass the reverse protection.\u003c\/p\u003e\n\u003cp\u003eVOUT is the regulated output voltage.\u003c\/p\u003e\n\u003cp\u003eAll of the connections are arranged on a 0.1″ grid for compatibility with \u003ca href=\"\/nl\/collections\/solderless-breadboards\"\u003esolderless breadboards\u003c\/a\u003e, \u003ca href=\"\/nl\/collections\/connectors\"\u003econnectors\u003c\/a\u003e, and other \u003ca href=\"\/nl\/collections\/adafruit-prototyping\"\u003eprototyping arrangements\u003c\/a\u003e that use a 0.1″ grid. The PG connection is the only one not accessible along the edge of the board. A 1×12 straight male header strip is included with the regulator.\u003c\/p\u003e\n\u003cp\u003eThe power connections (VIN, VRP, VOUT, and GND) are duplicated across both rows of through-holes, allowing two header pins to be used for each connection. Note that the EN and PG pins are not duplicated and are adjacent on different rows, so if you intend to use the regulator on a breadboard, be careful to avoid installing header pins in a way that shorts EN to PG.\u003c\/p\u003e\n\u003cp\u003eEach header pin is only rated for 3A (6A combined per pair), and solderless breadboards are usually not intended to handle more than a few amps, so for higher-power applications, thick \u003ca href=\"\/nl\/collections\/prototyping-wire-heat-shrink\"\u003ewires\u003c\/a\u003e should be \u003ca href=\"\/nl\/collections\/soldering-supplies\"\u003esoldered\u003c\/a\u003e directly to the board.\u003c\/p\u003e\n\u003ch3\u003eTypical efficiency\u003c\/h3\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/d36v50f5_efficiency_1.jpg?v=1718800300\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eMaximum continuous output current\u003c\/h3\u003e\n\u003cp\u003eThe 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 the maximum output currents that these regulators can deliver continuously at room temperature in still air and without additional heat sinking.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\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\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/d36v50fx_max_cont_out_current_1.jpg?v=1718797877\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eQuiescent current\u003c\/h3\u003e\n\u003cp\u003eThe 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 10µA and 20µA per volt on VIN.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/d36v50fx_quiescent_current_1.jpg?v=1718798025\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eTypical dropout voltage\u003c\/h3\u003e\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.\u003c\/p\u003e\n\u003cp\u003eFor example, if a 5V regulator has a 1V dropout voltage, the input must be at least 6V to ensure the output is the full 5V. Generally speaking, the dropout voltage increases as the output current increases.\u003c\/p\u003e\n\u003cp\u003eThe graph below shows the dropout voltages for the different members of this regulator family:\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/d36v50fx_dropout_voltage_1.jpg?v=1718798112\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pololu.com\/file\/0J1732\/d36v50fx-step-down-voltage-regulator-dimensions.pdf\"\u003eDimension diagram\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pololu.com\/file\/0J1733\/d36v50fx-step-down-voltage-regulator.step\"\u003e3D Model\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pololu.com\/file\/0J1734\/reg24d-drill.dxf\"\u003eDrill Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x 5V 5.5A Step-Down Voltage Regulator D36V50\u003cstrong\u003eF5\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e1x 12-pin header strip\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pololu","offers":[{"title":"Default Title","offer_id":50847311790353,"sku":"POL-4091","price":23.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/pololu-5v-5-5a-step-down-voltage-regulator-d36v50f5-pololu-pol-4091-42450803982531.jpg?v=1735210691","url":"https:\/\/abcd3032.myshopify.com\/nl\/products\/pololu-5v-5-5a-step-down-voltage-regulator-d36v50f5","provider":"Tayyab Zak","version":"1.0","type":"link"}