{"product_id":"eta8120s2g-cmbc-dc-step-down-switching-regulator-whatsminer-cb6v10","title":"ETA8120S2G CMBc Step-Down Regulator for Whatsminer CB6 V10 Control Board","description":"\u003ch2\u003eETA8120S2G CMBc DC-DC Step-Down Switching Regulator | Whatsminer CB6 V10 Control Board\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eETA8120S2G CMBc\u003c\/strong\u003e is a high-frequency DC-DC step-down switching regulator integrated into the \u003cstrong\u003eWhatsminer CB6 V10 control board\u003c\/strong\u003e — and a critical line-replaceable IC when the board's power rails fail. Designed to deliver exceptional efficiency and performance, this regulator accepts a wide \u003cstrong\u003e4.2V to 18V input range\u003c\/strong\u003e, making it suitable for the mixed-voltage rails inside crypto-miner control boards and adjacent power architectures.\u003c\/p\u003e\n\u003cp\u003eIdentifiable by its silk-screen mark \u003cstrong\u003eCM**\u003c\/strong\u003e in the SOT23-6 package, the ETA8120S2G uses a current-mode PWM-controlled converter with a fixed switching frequency of 500kHz. That combination enables small external components, simple compensation, and high efficiency even at light loads where the regulator falls back to PFM mode automatically.\u003c\/p\u003e\n\u003ch3\u003eWide Input Range, High Efficiency, and Compact Size for Optimal Performance\u003c\/h3\u003e\n\u003cp\u003eBuilt-in \u003cstrong\u003ethermal shutdown\u003c\/strong\u003e and \u003cstrong\u003eUVLO\u003c\/strong\u003e (under-voltage lockout) protections keep the regulator stable through the abnormal conditions common in mining-environment power rails — high ambient heat, dirty input voltages, surge events. The current-mode control scheme makes loop response predictable, and external compensation is not required, which keeps the board layout tight and the BoM short.\u003c\/p\u003e\n\u003ch3\u003eETA8120S2G Use Cases\u003c\/h3\u003e\n\u003cp\u003eWhile the primary application is the Whatsminer CB6 V10 control board, the same SOT23-6 part also lands in LCD TV, set-top box, and portable TV power rails — anywhere a designer needs a 2A step-down rail with minimal external components. Repair shops keeping ETA8120S2G in stock can cover both crypto-miner control board rework and adjacent consumer-electronics service work from the same drawer.\u003c\/p\u003e\n\u003ch4\u003eETA8120S2G Step-Down Switching Regulator Features\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e4.2V-18V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Capability\u003c\/td\u003e\n\u003ctd\u003eUp to 2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Scheme\u003c\/td\u003e\n\u003ctd\u003eCurrent mode control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003eFixed at 500kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency at Light Loads\u003c\/td\u003e\n\u003ctd\u003eHigh-efficiency PFM mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Compensation\u003c\/td\u003e\n\u003ctd\u003eNot required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Features\u003c\/td\u003e\n\u003ctd\u003eThermal shutdown and UVLO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOT23-6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eRelated products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/whatsminer-cb4v10-h6-control-board-m20-m30-m31-m32\"\u003eWhatsminer CB4 V10 H6 Control Board\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/whatsminer-control-board-cb2v8-h3-motherboard-replacement\"\u003eWhatsminer CB2 V8 H3 Control Board (M20\/M21)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/whatsminer-h6-h6os-bga-reballing-stencil-cpu-allwinner-control-board\"\u003eWhatsminer H6 \/ H6OS BGA Reballing Stencil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/whatsminer-m60-m50-m30-hashboard-tester\"\u003eWhatsminer M60 \/ M50 \/ M30 Hash Board Tester\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhatsminer repair benches ordering ETA8120S2G in tray quantities can email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e for bulk pricing and matched control-board kits. Worldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"Default Title","offer_id":42972314173619,"sku":null,"price":0.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/High-Efficiency-ETA8120S2G-DC-Step-Down-Switching-Regulator-Whatsminer-CB6V10-Control-Board.webp?v=1744701533","url":"https:\/\/lys-sz.com\/products\/eta8120s2g-cmbc-dc-step-down-switching-regulator-whatsminer-cb6v10","provider":"LYS Shenzhen","version":"1.0","type":"link"}