{"product_id":"5v-1a-step-down-voltage-regulator","title":"5V, 1A Step-Down Voltage Regulator","description":"\u003cp\u003e\u003cspan\u003eThe compact (0.5″ × 0.7″) D24V10F5 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to \u003c\/span\u003e\u003cstrong\u003e5 V\u003c\/strong\u003e\u003cspan\u003e while allowing for a maximum output current of \u003c\/span\u003e\u003cstrong\u003e1 A\u003c\/strong\u003e\u003cspan\u003e. This regulator offers typical efficiencies between 85% and 90% and has a very low dropout, so it can be used with input voltages as low as a few hundred millivolts above 5 V. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.\u003c\/span\u003e\u003c\/p\u003e\r\n\u003ch2\u003eFeatures\u003c\/h2\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eInput voltage: [\u003cem\u003eoutput voltage + dropout voltage\u003c\/em\u003e] to 36 V (see below for more information on dropout voltage)\u003c\/li\u003e\r\n\u003cli\u003eFixed 3.3 V, 5 V, 6 V, 9 V, or 12 V output (depending on regulator version) with 4% accuracy\u003c\/li\u003e\r\n\u003cli\u003eMaximum output current: 1 A\u003c\/li\u003e\r\n\u003cli\u003eTypical efficiency of 80% to 93%\u003c\/li\u003e\r\n\u003cli\u003e500 kHz switching frequency (when not in power-save mode)\u003c\/li\u003e\r\n\u003cli\u003e2 ms soft-start reduces in-rush current on power-up\u003c\/li\u003e\r\n\u003cli\u003e200 μA typical no-load quiescent current\u003c\/li\u003e\r\n\u003cli\u003eIntegrated over-temperature and over-current shutoff\u003c\/li\u003e\r\n\u003cli\u003eSmall size: 0.7″ × 0.5″ × 0.14″ (18 mm × 13 mm × 3.5 mm)\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3\u003eConnections\u003c\/h3\u003e\r\n\u003cp\u003eThe buck regulator has five connections: power good (PG). shutdown (\u003cspan\u003eSHDN\u003c\/span\u003e), input voltage (VIN), ground (GND), and output voltage (VOUT).\u003c\/p\u003e\r\n\u003cp\u003eThe “power good” indicator, \u003cstrong\u003ePG\u003c\/strong\u003e, is an open-drain output that drives low when the regulator’s output voltage falls below 80% or rises above 120% of its target output voltage. This output is also actively held low for the duration of the regulator’s 2 ms soft-start period and while the regulator is being disabled by the \u003cspan\u003eSHDN\u003c\/span\u003e input or by over-temperature or over-current fault conditions. An external pull-up resistor is generally required to use this pin.\u003c\/p\u003e\r\n\u003cp\u003eThe \u003cspan\u003e\u003cstrong\u003eSHDN\u003c\/strong\u003e\u003c\/span\u003e pin can be driven low (under 0.4 V) to turn off the output and put the board into a low-power state. There is a 100 kΩ pull-up resistor between the \u003cspan\u003eSHDN\u003c\/span\u003e pin and VIN, so if you want to leave the board permanently enabled, the \u003cspan\u003eSHDN\u003c\/span\u003e pin can be left disconnected. While the \u003cspan\u003eSHDN\u003c\/span\u003e pin is being driven low, the current draw of the regulator is dominated by the current through the pull-up resistor and will be proportional to the input voltage. (At 36 V in it will draw about 360 μA.)\u003c\/p\u003e\r\n\u003cp\u003eThe input voltage, \u003cstrong\u003eVIN\u003c\/strong\u003e, powers the regulator. Voltages between 3 V and 36 V can be applied to VIN, but 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 dropout voltages as a function of the load). Additionally, please be wary of destructive LC spikes (see below for more information).\u003c\/p\u003e\r\n\u003cp\u003eThe output voltage, \u003cstrong\u003eVOUT\u003c\/strong\u003e, is fixed and depends on the regulator version: the D24V10F3 version outputs 3.3 V, the D24V10F5 version outputs 5 V, the D24V10F6 version outputs 6 V, the D24V10F9 version outputs 9 V, and the D24V10F12 version outputs 12 V.\u003c\/p\u003e\r\n\u003cp\u003eThe five connections are labeled on the back side of the PCB and are arranged with a 0.1″ spacing along the edge of the board 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. You can solder wires directly to the board or solder in either the 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 that is included.\u003c\/p\u003e\r\n\u003cp\u003e \u003c\/p\u003e","brand":"Pololu","offers":[{"title":"Default Title","offer_id":14778676576319,"sku":"2796","price":7.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0084\/8301\/2671\/products\/0j6002.1200.jpg?v=1570043974","url":"https:\/\/dronecosmo.myshopify.com\/products\/5v-1a-step-down-voltage-regulator","provider":"DroneCosmo","version":"1.0","type":"link"}