{"product_id":"me4894-me4925-me4946-me4946a-synchronous-buck-converter-sop8-95-efficiency-10pack","title":"ME4894-G \/ ME4925 \/ ME4946 \/ ME4946A Synchronous Buck Converter IC — SOP-8, 95% Efficiency (10-Pack)","description":"\u003ch2\u003eME4894-G \/ ME4925 \/ ME4946 \/ ME4946A Synchronous Buck Converter IC — SOP-8, 95% Efficiency (10-Pack)\u003c\/h2\u003e\u003cp\u003eThe ME4894-G, ME4925, ME4946, and ME4946A are high-efficiency synchronous step-down (buck) DC-DC converter ICs in SOP-8 SMD packages. Integrating both high-side and low-side power MOSFETs with a current-mode PWM controller, they deliver up to 95% conversion efficiency with minimal external components. Full protection including OCP, OVP, and thermal shutdown makes them suitable for consumer electronics power supply design and repair.\u003c\/p\u003e\u003ch3\u003eVariant Comparison\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eInput Voltage\u003c\/th\u003e\n\u003cth\u003eOutput Current\u003c\/th\u003e\n\u003cth\u003eKey Feature\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eME4894-G\u003c\/td\u003e\n\u003ctd\u003e4.5–18V\u003c\/td\u003e\n\u003ctd\u003e3A\u003c\/td\u003e\n\u003ctd\u003eWide input, high current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eME4925\u003c\/td\u003e\n\u003ctd\u003e4.5–25V\u003c\/td\u003e\n\u003ctd\u003e2A\u003c\/td\u003e\n\u003ctd\u003eHigher input voltage range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eME4946\u003c\/td\u003e\n\u003ctd\u003e4.5–18V\u003c\/td\u003e\n\u003ctd\u003e4A\u003c\/td\u003e\n\u003ctd\u003eHigh current output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eME4946A\u003c\/td\u003e\n\u003ctd\u003e4.5–18V\u003c\/td\u003e\n\u003ctd\u003e4A\u003c\/td\u003e\n\u003ctd\u003eImproved soft-start, lower EMI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eKey Specifications (All Variants)\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eSynchronous buck (integrated MOSFETs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Efficiency\u003c\/td\u003e\n\u003ctd\u003eUp to 95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003e~300–500kHz (variant dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eOCP, OVP, thermal shutdown, soft-start, UVLO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003eAdjustable (external resistor divider)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose ME4894\/ME4925\/ME4946?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e95% peak efficiency\u003c\/strong\u003e — synchronous rectification eliminates freewheeling diode loss\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated MOSFETs\u003c\/strong\u003e — no external power transistors needed, minimal BOM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull protection suite\u003c\/strong\u003e — OCP\/OVP\/thermal\/UVLO\/soft-start for robust operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOP-8 compact package\u003c\/strong\u003e — direct replacement in existing consumer electronics PCB footprints\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-pack value\u003c\/strong\u003e — sufficient for multiple designs and repair stock\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsumer electronics power supply\u003c\/strong\u003e: 12V to 5V\/3.3V step-down for set-top boxes, routers, and smart speakers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD monitor power board\u003c\/strong\u003e: Logic supply rail step-down (12V→3.3V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial embedded supply\u003c\/strong\u003e: 24V to 5V\/3.3V for PLC and industrial controller logic supply\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCB repair\u003c\/strong\u003e: Replacement for failed synchronous buck IC on consumer electronics boards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino\/ESP32 power supply\u003c\/strong\u003e: Efficient 5V or 3.3V supply from 12V adapter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I set the output voltage for ME4946?\u003c\/strong\u003e\u003cbr\u003eA: Use a resistor divider from Vout to the FB pin to GND. Vout = Vref × (1 + R1\/R2), where Vref is typically 0.8V for ME4946. For 3.3V output: R1=31.25kΩ, R2=10kΩ. For 5V output: R1=52.5kΩ, R2=10kΩ. Use 1% tolerance resistors for accurate output voltage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can ME4946 replace MP2307 or XL4016 in an existing design?\u003c\/strong\u003e\u003cbr\u003eA: Only if the pinout matches. SOP-8 buck converter ICs are not universally pin-compatible. Always compare the datasheet pinout of the original IC with ME4946 before substituting. Verify input voltage range, output current, and switching frequency compatibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What inductor should I use with ME4946 for 12V to 5V at 3A?\u003c\/strong\u003e\u003cbr\u003eA: For 12V input, 5V output, 3A load at 400kHz: L = (Vin−Vout)×D\/(f×ΔIL) where D=5\/12=0.42, ΔIL=30%×3A=0.9A. L≈(12−5)×0.42\/(400kHz×0.9A)≈8.2μH. Use a 10μH shielded inductor rated for ≥4A saturation current.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e10× ME4894-G \/ ME4925 \/ ME4946 \/ ME4946A Synchronous Buck Converter IC (SOP-8) — variant as selected\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"ME4946","offer_id":46991460991211,"sku":"14:351074#ME4946","price":9.0,"currency_code":"USD","in_stock":true},{"title":"ME4925","offer_id":46991461023979,"sku":"14:350852#ME4925","price":8.2,"currency_code":"USD","in_stock":true},{"title":"ME4894-G","offer_id":46991461056747,"sku":"14:1202#ME4894-G","price":7.72,"currency_code":"USD","in_stock":true},{"title":"ME4946A","offer_id":46991461089515,"sku":"14:4044226#ME4946A","price":7.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/me4894-g-me4925-me4946-me4946a-sop-8-voltage-regulator-ic-chipset.webp?v=1761794568","url":"https:\/\/keszoox.com\/products\/me4894-me4925-me4946-me4946a-synchronous-buck-converter-sop8-95-efficiency-10pack","provider":"Keszoox","version":"1.0","type":"link"}