{"product_id":"adafruit-lm66200-ideal-dual-diodes-breakout","title":"Adafruit LM66200 Ideal Dual Diodes Breakout","description":"\u003cp\u003eMost projects these days have multiple power supplies: say a battery or DC wall plug or USB for multiple powering options. Juggling these to have seamless hot-swap while avoiding back-powering is always a bit of a challenge: you want to keep things small, cheap, low power and of course reduce as much voltage drop as possible.\u003c\/p\u003e \u003cp\u003eThe Adafruit LM66200 Dual Ideal Diode breakout is a cute solution to dual supplies: it has back-voltage protection, and two 'ideal' diodes with RdsOn of 40 milliohms, support for 2.5A continuous draw and a separate enable input and status output.\u003c\/p\u003e \u003cp\u003eSure you could DIY the circuitry with multiple transistors, but this is compact and easy to use! Simply connect the two 2~5V power supplies to Vin1 and Vin2, the higher of the two will appear on Vout. Disable the output completely by pulling the On\/Enable pin high. Check the Status pin, if desired, to see whether Vin1 or Vin2 is the selected supply.\u003c\/p\u003e \u003cp\u003eTo make it \u003ca href=\"\/zh\/collections\/solderless-breadboards\"\u003ebreadboard-friendly\u003c\/a\u003e, we've placed it on a small PCB with 6 x 0.1\" breakout pads. The chip and a 1 Megaohm enable-pulldown are soldered on top. We include a bit of header, some \u003ca href=\"\/zh\/collections\/soldering-supplies\"\u003elight soldering\u003c\/a\u003e is required to attach the header - or use free wiring if you want to insert it directly into a circuit.\u003c\/p\u003e \u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"\/\/www.youtube.com\/embed\/O-QfiX8XGm8?si=_Is3igzUHeIa9WMV\u0026amp;start=189\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e \u003ch2\u003eSpecifications\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.ti.com\/product\/LM66200\"\u003eLM66200 Product information page\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003eInput voltage range: 1.6 V to 5.5 V\u003c\/li\u003e \u003cli\u003eMaximum continuous current: 2.5 A\u003c\/li\u003e \u003cli\u003eOn-resistance: 40 mΩ (typical)\u003c\/li\u003e \u003cli\u003eStandby current: 50 nA (typical)\u003c\/li\u003e \u003cli\u003eQuiescent current: 1.32 μA (typical)\u003c\/li\u003e \u003cli\u003eAutomatic diode switchover\u003c\/li\u003e \u003cli\u003eControlled output slew rate: 1.3 ms (typical) at 3.3 V\u003c\/li\u003e \u003cli\u003eReverse current blocking when VOUT \u0026gt; VINx\u003c\/li\u003e \u003cli\u003eThermal shutdown\u003c\/li\u003e \u003cli\u003eDimensions: 16.5mm x 10.0mm x 2.2mm\u003c\/li\u003e \u003cli\u003eWeight: 0.5g\u003c\/li\u003e \u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":50847525011729,"sku":"ADA5830","price":2.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/adafruit-lm66200-ideal-dual-diodes-breakout-adafruit-ada5830-41453622493379.jpg?v=1735214689","url":"https:\/\/abcd3032.myshopify.com\/zh\/products\/adafruit-lm66200-ideal-dual-diodes-breakout","provider":"Tayyab Zak","version":"1.0","type":"link"}