{"product_id":"42v-input-3-3v-2a-output-high-voltage-step-down-regulator","title":"42V Input – 3.3V @ 2A Output High Voltage Step Down Regulator","description":"\u003cp\u003eThis  is a high voltage step-down regulator based on \u003cstrong\u003eA4447\u003c\/strong\u003e general-purpose buck converter chip from \u003cstrong\u003eAllegro Semiconductor\u003c\/strong\u003e. The output voltage of the board is configured at \u003cstrong\u003e3.3V\u003c\/strong\u003e, but it is adjustable from \u003cstrong\u003e0.8 to 24V\u003c\/strong\u003e, based on the resistor divider R2 and R5. Connector CN1 is for DC input 24V-42V, Connector CN2 is DC Output. Refer to the information below to adjust various voltage outputs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDivider Resistor Value for 1.5V, 1.8V, 3.3V, 5V Output\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.5V: \u003c\/strong\u003e R2=1.3K, R5=1.47K Ohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.8V:\u003c\/strong\u003e  R2=2.55K, R5=2K Ohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V:\u003c\/strong\u003e  R2= 3K, R5=910 Ohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5V:\u003c\/strong\u003e R2=6.34K, R5=1.2K Ohms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe chip has a soft start feature, which allows the output to slowly ramp upon startup. This limits the maximum demand on the external power supply by controlling the inrush current required to charge the external capacitor and any DC load at start-up. Internally, the ramp is set to \u003cstrong\u003e10 ms\u003c\/strong\u003e nominal rise time. During soft-start, the current limit is \u003cstrong\u003e2.2A\u003c\/strong\u003e minimum. \u003cstrong\u003eENB\u003c\/strong\u003e pin is connected to the ground to enable the device and begin the soft-start sequence.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInput Supply: 24-42V DC\u003c\/li\u003e\n\u003cli\u003eDC Output: 3.3V\u003c\/li\u003e\n\u003cli\u003eLoad 2A\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 40.64 x 29.31 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47249458954412,"sku":null,"price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/G192.jpg?v=1789905349","url":"https:\/\/dotfry.com\/products\/42v-input-3-3v-2a-output-high-voltage-step-down-regulator","provider":"dotfry","version":"1.0","type":"link"}