{"title":"Pololu D42V55F8 8.4V 5A Step-Down Voltage Regulator","handle":"pololu-step-down-voltage-regulator-8-4v-5a","url":"/products/pololu-step-down-voltage-regulator-8-4v-5a","description":"This compact Pololu D42V55F8 module is a synchronous buck switching regulator for turning a higher DC input into a stable 8.4 V output. It is suited to projects where efficiency matters, especially when the input voltage is much higher than the required output.The regulator accepts input voltages from 8.4 V up to 60 V and can deliver a regulated 8.4 V output at up to 5 A. Typical continuous output current depends on input voltage and thermal conditions, with efficient operation compared with a linear regulator for reduced heat and better energy use.Useful control and monitoring signals are broken out, including enable (EN) for low-power shutdown and power-good (PG) for voltage monitoring or sequencing. The board also includes soft-start and built-in protection features, with 0.1″ grid-compatible connections for straightforward prototyping.Features:Synchronous buck conversion: Steps a higher input voltage down to a lower regulated output voltage efficiently.Enable input: EN input for low-power shutdown.Power-good output: PG output for voltage monitoring and sequencing.Soft-start: Limits inrush current.Reverse-voltage protection: Built-in reverse-voltage protection.Over-current protection: Built-in over-current protection.Over-temperature protection: Built-in over-temperature protection.Prototyping friendly: Six 0.1″ grid-compatible connections with duplicated power rails.Specifications:Input voltage: 8.4 V up to 60 VRegulated output voltage: 8.4 VMaximum output current: up to 5 ATypical continuous output current: between 3.5 A and 7 A, depending on input voltage and thermal conditionsEfficiency: approximately 80% to 95%, varying with load and voltage differentialSwitching frequency: around 400 kHz under heavy loadsQuiescent current: < 0.2 mA at no loadDimensions: 1″ × 1″ × 0.355″ (25.4 × 25.4 × 9 mm)Mounting holes: three mounting holes for #2 or M2 screwsConnections: six 0.1″ grid-compatible connections (VIN, VOUT, GND, VRP, EN, PG)Power rails: duplicated power railsA handy regulator for robotics, battery-powered systems, and other DC power projects that need a stable 8.4 V rail from a higher-voltage supply.","vendor":"SparkFun","product_type":"Voltage Regulator","in_stock":true,"options":[],"variants":[{"id":16080,"title":"Default Title","sku":"SF-COM-29788","mpn":"COM-29788","price":73.75,"on_sale":false,"in_stock":true,"available_quantity":16}]}