{"product_id":"tny285dg-offline-switcher-ic-sop7-tinyswitch-iii-2pcs","title":"TNY285DG Offline Switcher IC SOP-7 – Pack of 2 (TinySwitch-III, Power Management)","description":"\u003ch2\u003eTNY285DG Offline Switcher IC – SOP-7, Pack of 2 (TinySwitch-III)\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eTNY285DG\u003c\/strong\u003e is a member of Power Integrations' \u003cstrong\u003eTinySwitch-III\u003c\/strong\u003e family – a highly integrated offline switcher IC that combines a high-voltage power MOSFET, PWM controller, oscillator, and comprehensive protection functions into a single SOP-7 package. Designed for low-power offline flyback power supplies (up to 5W), it dramatically reduces component count compared to discrete SMPS designs. The TNY285DG is widely used in USB chargers, phone adapters, and low-power consumer electronics power supplies – making it one of the most commonly replaced ICs in charger repair. This 2-piece SOP-7 pack is ideal for repair technicians.\u003c\/p\u003e\n\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e TNY285DG (SOP-7) \/ TNY285PN (DIP-8)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e SOP-7 (SMD, 1.27mm pitch, 7-pin)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFamily:\u003c\/strong\u003e TinySwitch-III (Power Integrations)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Power:\u003c\/strong\u003e Up to 5W (85–265VAC input, open-frame design)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated MOSFET:\u003c\/strong\u003e 700V N-channel MOSFET (no external MOSFET needed)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwitching Frequency:\u003c\/strong\u003e 132kHz (typical)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 85VAC – 265VAC (universal mains)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnable\/Undervoltage:\u003c\/strong\u003e EN\/UV pin for feedback and auto-restart\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Cycle-by-cycle current limiting, auto-restart (OCP\/OVP), thermal shutdown\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandby Power:\u003c\/strong\u003e \u0026lt;30mW (no-load, 230VAC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e −40°C to +150°C (junction)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTinySwitch-III – How It Simplifies SMPS Design\u003c\/h3\u003e\n\u003cp\u003eTraditional offline SMPS requires a separate PWM controller IC, power MOSFET, gate driver, startup resistors, and current sense circuit. The TNY285DG integrates all of these into one SOP-7 IC – the only external components needed are the transformer, output diode, filter capacitors, and optocoupler feedback circuit. This reduces BOM count by 50% and PCB area significantly.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Failure Symptoms (When TNY285DG Fails)\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUSB charger or adapter completely dead – no output voltage\u003c\/li\u003e\n  \u003cli\u003eCharger makes ticking sound (auto-restart cycling)\u003c\/li\u003e\n  \u003cli\u003eOutput voltage present but drops under load\u003c\/li\u003e\n  \u003cli\u003eCharger works intermittently or gets very hot\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB charger repair:\u003c\/strong\u003e Most common application – replacement for failed TNY285 in phone chargers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAC-DC adapter repair:\u003c\/strong\u003e Low-power adapter SMPS controller replacement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConsumer electronics power supply:\u003c\/strong\u003e Set-top box, router, and IoT device power supply\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED driver power supply:\u003c\/strong\u003e Offline flyback converter for LED lighting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial low-power SMPS:\u003c\/strong\u003e Auxiliary power supply design\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 × TNY285DG SOP-7 TinySwitch-III offline switcher ICs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAn entire offline SMPS controller in one SOP-7 IC – the TNY285DG is the most common IC in USB charger and low-power adapter repair, integrating the MOSFET, PWM controller, and protection in a single package.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"TNY285DG","offer_id":46985495970027,"sku":"14:1202#TNY285DG","price":35.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/tny285dg-power-management-ic-smd-sop7.webp?v=1761287063","url":"https:\/\/keszoox.com\/products\/tny285dg-offline-switcher-ic-sop7-tinyswitch-iii-2pcs","provider":"Keszoox","version":"1.0","type":"link"}