{"product_id":"sgm3750-boost-converter-led-driver-m20s-m21s-hashboard","title":"SGM3750 Boost Converter Chip – LED Driver for Whatsminer M20S M21S Hashboard","description":"\u003ch2\u003eSGM3750 Boost Converter Chip | LED Driver for Whatsminer M20S M21S Hashboards\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSGM3750\u003c\/strong\u003e is a high-efficiency boost converter \/ LED driver chip designed for the LED indicator chains on \u003cstrong\u003eWhatsminer M20S, M21S, and Antminer V9 hashboards\u003c\/strong\u003e. Engineered for up to \u003cstrong\u003e90% efficiency\u003c\/strong\u003e in a compact \u003cstrong\u003eTDFN-2×2-6L\u003c\/strong\u003e package, it delivers stable PWM dimming control from 5kHz to 100kHz with zero audible noise — exactly what mining hardware needs in repair and replacement scenarios where a damaged LED driver knocks the board's status indication offline.\u003c\/p\u003e\n\u003cp\u003eWith a wide \u003cstrong\u003e2.7V-20V input range\u003c\/strong\u003e and built-in \u003cstrong\u003e38V open-LED protection\u003c\/strong\u003e, the chip handles the mixed-voltage rails and component-level fault conditions common to ASIC hashboards. Built-in soft-start reduces inrush current at power-up, extending hardware lifespan, and the chip operates reliably from -40°C to +85°C — wide enough for harsh mining-environment deployments.\u003c\/p\u003e\n\u003ch3\u003eReliable 650kHz Boost Converter with PWM Dimming \u0026amp; Open-Circuit Protection\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide input voltage range (2.7V-20V)\u003c\/strong\u003e — compatible with various mining setups and hashboard designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen LED protection (38V)\u003c\/strong\u003e — prevents damage to ASIC miner components when an LED chain opens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision dimming (1:500 range)\u003c\/strong\u003e — smooth brightness adjustment for mining-farm efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft-start function\u003c\/strong\u003e — reduces inrush current to extend mining-hardware lifespan.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero audible noise\u003c\/strong\u003e — PWM frequency from 5kHz to 100kHz keeps the chip quiet across all dim settings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSGM3750 Repair Workflow\u003c\/h3\u003e\n\u003cp\u003eWhen a Whatsminer M20S \/ M21S hashboard's LED status indication fails or shows partial illumination, the SGM3750 boost converter is the most likely culprit. Replacement is straightforward: locate the chip on the LED driver section of the hashboard, remove with hot-air rework, clean the pads, place the new TDFN-2×2-6L device with correct orientation, reflow, and bench-test the LED chain through its full PWM range to confirm the dimming control is restored.\u003c\/p\u003e\n\u003ch4\u003eSGM3750 Boost Converter Chip Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003e2.7V - 20V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Output Protection\u003c\/td\u003e\n\u003ctd\u003e38V (Open LED Protection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePWM Dimming Frequency\u003c\/td\u003e\n\u003ctd\u003e5kHz - 100kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Voltage\u003c\/td\u003e\n\u003ctd\u003e200mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003eUp to 90%\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\u003ePackage Type\u003c\/td\u003e\n\u003ctd\u003eGreen TDFN-2×2-6L\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-m20-m20s-m21-hashboard-tester\"\u003eWhatsminer M20 \/ M20S \/ M21 Hashboard Tester\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-kf1922-tin-tool-asic-repair-m20-m21\"\u003eWhatsminer KF1922 Tin Tool Kit (M20\/M21)\u003c\/a\u003e\u003c\/li\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\u003c\/ul\u003e\n\u003cp\u003eRepair benches ordering SGM3750 in tray quantities can email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e for bulk pricing and matched M20\/M21 hashboard kits. Worldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"Default Title","offer_id":44744080457907,"sku":null,"price":0.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/SGM3750-Boost-Converter-Chip-LED-Driver-Antminer-V9-Whatsminer-M20S-M21S-Hash-Board.webp?v=1749199001","url":"https:\/\/lys-sz.com\/products\/sgm3750-boost-converter-led-driver-m20s-m21s-hashboard","provider":"LYS Shenzhen","version":"1.0","type":"link"}