{"product_id":"5v-2-5a-step-down-voltage-regulator","title":"Pololu 5V 2.5A Step-Down Voltage Regulator","description":"\u003cp\u003eThe D24V25Fx family of step-down voltage regulators generates lower output voltages from input voltages as high as 38 V. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters) with typical efficiencies between 85% and 95%, which is much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large. The available output current is a function of the input voltage and efficiency (see the \u003cem\u003eTypical Efficiency and Output Current\u003c\/em\u003e section below), but the output current can typically be as high as 2.5 A.\u003c\/p\u003e\n\u003cp\u003eAt light loads, the switching frequency automatically changes to maintain high efficiencies. These regulators have a typical quiescent (no load) current draw of less than 1 mA, and the ENABLE pin can be used to put the boards in a low-power state that reduces the quiescent current to approximately 10 µA to 20 µA per volt on VIN.\u003c\/p\u003e\n\u003cp\u003eThe modules have built-in reverse-voltage protection, short-circuit protection, a thermal shutdown feature that helps prevent damage from overheating, a soft-start feature that reduces inrush current, and an under-voltage lockout.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInput voltage:\n\u003cul\u003e\n\u003cli\u003e4.5 V to 38 V for the version that outputs 3.3 V\u003c\/li\u003e\n\u003cli\u003e[\u003cem\u003eoutput voltage + dropout voltage\u003c\/em\u003e] to 38 V for output voltages of 5 V and higher (see below for more information on dropout voltage)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eFixed 3.3 V, 5 V, 6 V, 7.5 V, or 9 V output (depending on regulator version) with 4% accuracy\u003c\/li\u003e\n\u003cli\u003eTypical maximum continuous output current: 2.5 A\u003c\/li\u003e\n\u003cli\u003eIntegrated reverse-voltage protection, over-current protection, over-temperature shutoff, soft-start, and under-voltage lockout\u003c\/li\u003e\n\u003cli\u003eTypical efficiency of 85% to 95%, depending on input voltage and load; the switching frequency automatically changes at light loads to maintain high efficiencies\u003c\/li\u003e\n\u003cli\u003eTypical no-load quiescent current under 1 mA; can be reduced to 10 µA to 20 µA per volt on VIN by disabling the board\u003c\/li\u003e\n\u003cli\u003eCompact size: 0.7″ × 0.7″ × 0.35″ (17.8 mm × 17.8 mm × 8.8 mm)\u003c\/li\u003e\n\u003cli\u003eTwo 0.086″ mounting holes for #2 or M2 screws\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConnections\u003c\/h3\u003e\n\u003cp\u003eThe input voltage, \u003cstrong\u003eVIN\u003c\/strong\u003e, powers the regulator. Voltages between 4.5 V and 38 V can be applied to VIN, but for versions of the regulator that have an output voltage higher than 4.5 V, 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).\u003c\/p\u003e\n\u003cp\u003eThe output voltage, \u003cstrong\u003eVOUT\u003c\/strong\u003e, is fixed and depends on the regulator version: the D24V25F3 version outputs 3.3 V, the D24V25F5 version outputs 5 V, the D24V25F6 version outputs 6 V, the D24V25F7 version outputs 7.5 V, and the D24V5F9 version outputs 9 V.\u003c\/p\u003e\n\u003cp\u003eThe regulator is enabled by default: a 100 kΩ pull-up resistor on the board connects the \u003cstrong\u003eENABLE\u003c\/strong\u003e pin to reverse-protected VIN. The ENABLE pin can be driven low (under 0.6 V) to put the board into a low-power state. The quiescent current draw in this sleep mode is dominated by the current in the pull-up resistor from ENABLE to VIN and by the reverse-voltage protection circuit, which will draw between 10 µA and 20 µA per volt on VIN when ENABLE is held low. If you do not need this feature, you should leave the ENABLE pin disconnected.\u003c\/p\u003e","brand":"Pololu","offers":[{"title":"Default Title","offer_id":45515384553702,"sku":"2798","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/9525\/8342\/files\/pololu-2-5v-5a-vreg_6.jpg?v=1734559251","url":"https:\/\/shop.lumenier.com\/products\/5v-2-5a-step-down-voltage-regulator","provider":"Lumenier","version":"1.0","type":"link"}