{"product_id":"ice3bs03ljg-3bs3lj-sop8-flyback-power-switch-controller-ic-2pcs","title":"ICE3BS03LJG \/ 3BS3LJ SOP-8 Flyback Power Switch Controller IC (2pcs)","description":"\u003ch2\u003eICE3BS03LJG \/ 3BS3LJ — SOP-8 Flyback Power Switch Controller IC\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eICE3BS03LJG\u003c\/strong\u003e (also marked \u003cstrong\u003e3BS3LJ\u003c\/strong\u003e) is an \u003cstrong\u003eInfineon CoolSET® integrated flyback controller\u003c\/strong\u003e combining a PWM controller and a \u003cstrong\u003e650V N-channel MOSFET\u003c\/strong\u003e in a single SOP-8 package. Designed for low-power offline flyback SMPS, it's widely used in LCD monitor standby power supplies and auxiliary power stages. This listing provides \u003cstrong\u003e2 pieces\u003c\/strong\u003e — new and original.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003eICE3BS03LJG \/ 3BS3LJ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntegrated MOSFET\u003c\/td\u003e\n\u003ctd\u003e650V N-channel (built-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrain Current (ID)\u003c\/td\u003e\n\u003ctd\u003e0.3A (continuous)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003eFixed 65kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStartup Current\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;200μA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBurst Mode\u003c\/td\u003e\n\u003ctd\u003eYes (light-load efficiency)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOVP, OCP, OTP, SCP, auto-restart\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVcc Range\u003c\/td\u003e\n\u003ctd\u003e10V – 23V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-25°C to +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e2 PCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose ICE3BS03LJG?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eIntegrated MOSFET\u003c\/strong\u003e — no external power switch needed, reduces BOM and PCB area\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eBurst mode\u003c\/strong\u003e — ultra-low standby power (\u0026lt;1W) for energy efficiency compliance\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eAuto-restart protection\u003c\/strong\u003e — safe recovery from fault conditions without manual reset\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eInfineon CoolSET®\u003c\/strong\u003e — proven reliability in millions of LCD monitor PSUs\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eNew \u0026amp; original\u003c\/strong\u003e — genuine Infineon parts for reliable repair\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eCompatible With \/ Works With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLCD monitor standby\/auxiliary power supply boards (5VSB rail)\u003c\/li\u003e\n\u003cli\u003eLCD TV standby power stage (3.3VSB \/ 5VSB)\u003c\/li\u003e\n\u003cli\u003eLow-power offline flyback adapters (\u0026lt;10W output)\u003c\/li\u003e\n\u003cli\u003eFlyback transformers: EE13, EE16, EI19 cores\u003c\/li\u003e\n\u003cli\u003eOptocoupler feedback: PC817 + TL431 secondary regulation\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD Monitor Standby PSU\u003c\/strong\u003e — 5VSB rail generation in 17–27\" monitor power boards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD TV Auxiliary Power\u003c\/strong\u003e — 3.3VSB \/ 5VSB for TV microcontroller and IR receiver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Power Offline Flyback\u003c\/strong\u003e — \u0026lt;10W isolated power supply for industrial controls\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB Charger Design\u003c\/strong\u003e — 5V\/1A isolated flyback with ICE3BS03LJG\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What does \"3BS3LJ\" marking mean on the IC?\u003c\/strong\u003e\u003cbr\u003eA: \"3BS3LJ\" is the abbreviated date\/lot code marking used on the SOP-8 package. It corresponds to ICE3BS03LJG — the full part number from Infineon.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can ICE3BS03LJG replace ICE3BS02LJG or ICE3BS04LJG?\u003c\/strong\u003e\u003cbr\u003eA: These are the same CoolSET® family with different MOSFET current ratings (02=0.2A, 03=0.3A, 04=0.4A). Pinout is identical — use a higher-rated variant (04LJG) as a direct upgrade if the original is marginal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I diagnose a failed ICE3BS03LJG?\u003c\/strong\u003e\u003cbr\u003eA: Check for: no Vcc startup voltage, MOSFET drain shorted to source (measure D-S resistance), or no switching waveform on drain. A shorted internal MOSFET is the most common failure mode.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e2× ICE3BS03LJG \/ 3BS3LJ SOP-8 Flyback Power Switch Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991479570667,"sku":"\u003cnone\u003e","price":17.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ice3bs03ljg-3bs3lj-sop8-power-switch-controller-ic.webp?v=1761628195","url":"https:\/\/keszoox.com\/products\/ice3bs03ljg-3bs3lj-sop8-flyback-power-switch-controller-ic-2pcs","provider":"Keszoox","version":"1.0","type":"link"}