{"product_id":"ka7500b-ka7500-dip16-pwm-controller-ic-tl494-equivalent-5pcs","title":"KA7500B \/ KA7500 DIP-16 PWM Controller IC — TL494 Equivalent (5pcs)","description":"\u003ch2\u003eKA7500B \/ KA7500 — DIP-16 PWM Controller IC (TL494 Equivalent)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eKA7500B\u003c\/strong\u003e is Samsung's \u003cstrong\u003epin-compatible equivalent of the TL494\u003c\/strong\u003e PWM controller IC in DIP-16 package. Electrically identical to TL494CN, it features dual error amplifiers, programmable dead-time, and complementary push-pull outputs capable of \u003cstrong\u003e200mA\u003c\/strong\u003e. Widely used in ATX power supplies, inverters, and DC-DC converters. This listing provides \u003cstrong\u003e5 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\u003eKA7500B \/ KA7500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDIP-16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTL494 Compatible\u003c\/td\u003e\n\u003ctd\u003e✅ Yes (pin-for-pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage (Vcc)\u003c\/td\u003e\n\u003ctd\u003e7V – 40V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current (per driver)\u003c\/td\u003e\n\u003ctd\u003e200mA sink\/source\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOscillator Frequency\u003c\/td\u003e\n\u003ctd\u003e1Hz – 300kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eError Amplifiers\u003c\/td\u003e\n\u003ctd\u003e2 (differential, 70dB gain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDead-Time Control\u003c\/td\u003e\n\u003ctd\u003e0–45% programmable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Modes\u003c\/td\u003e\n\u003ctd\u003eSingle-ended or push-pull\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Reference\u003c\/td\u003e\n\u003ctd\u003e5V ±1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 PCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eKA7500B vs TL494 Equivalents\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eKA7500B\u003c\/td\u003e\n\u003ctd\u003eSamsung (Fairchild)\u003c\/td\u003e\n\u003ctd\u003eDIP-16\u003c\/td\u003e\n\u003ctd\u003ePin-compatible TL494\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTL494CN\u003c\/td\u003e\n\u003ctd\u003eTexas Instruments\u003c\/td\u003e\n\u003ctd\u003eDIP-16\u003c\/td\u003e\n\u003ctd\u003eOriginal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDBL494\u003c\/td\u003e\n\u003ctd\u003eDaewoo\u003c\/td\u003e\n\u003ctd\u003eDIP-16\u003c\/td\u003e\n\u003ctd\u003ePin-compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIR3M02\u003c\/td\u003e\n\u003ctd\u003eInternational Rectifier\u003c\/td\u003e\n\u003ctd\u003eDIP-16\u003c\/td\u003e\n\u003ctd\u003ePin-compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose KA7500B?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eTL494 pin-compatible\u003c\/strong\u003e — direct drop-in replacement in any TL494 circuit\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eDual error amplifiers\u003c\/strong\u003e — independent voltage and current feedback loops\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003ePush-pull outputs\u003c\/strong\u003e — drives transformer primary in push-pull\/half-bridge topologies\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eProgrammable dead-time\u003c\/strong\u003e — prevents shoot-through in complementary switch pairs\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eNew \u0026amp; original Samsung\/Fairchild parts\u003c\/strong\u003e — reliable quality for repair and design\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eCompatible With \/ Works With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eATX desktop PC power supply primary PWM stage (direct TL494 replacement)\u003c\/li\u003e\n\u003cli\u003ePush-pull 12V–220V inverter transformer driver\u003c\/li\u003e\n\u003cli\u003eDC-DC boost\/buck converter control stage\u003c\/li\u003e\n\u003cli\u003eMotor PWM speed controller\u003c\/li\u003e\n\u003cli\u003eGate drivers: IR2110, TC4420 (for large MOSFET gate capacitance)\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eATX PSU Repair\u003c\/strong\u003e — replace failed TL494\/KA7500 in desktop PC power supply\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12V–220V Inverter\u003c\/strong\u003e — push-pull driver for EI33\/EE42 transformer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC-DC Converter\u003c\/strong\u003e — boost\/buck-boost topology control up to 300kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPS Inverter Stage\u003c\/strong\u003e — sine-wave or square-wave output control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Speed Controller\u003c\/strong\u003e — variable frequency PWM for DC motors\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Is KA7500B a direct replacement for TL494CN?\u003c\/strong\u003e\u003cbr\u003eA: Yes. KA7500B is pin-for-pin compatible with TL494CN. Same DIP-16 package, identical pinout, and equivalent electrical specifications. Simply swap the IC without any circuit modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I set the switching frequency on KA7500B?\u003c\/strong\u003e\u003cbr\u003eA: Same as TL494: connect RT between pin 6 and Vref (pin 14), CT between pin 5 and GND. Frequency ≈ 1.1 \/ (RT × CT). For 50kHz: RT=22kΩ, CT=1nF.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the difference between KA7500 and KA7500B?\u003c\/strong\u003e\u003cbr\u003eA: KA7500B is the improved version with tighter reference voltage tolerance (±1% vs ±2%) and better temperature stability. KA7500B is preferred for new designs and repair.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× KA7500B \/ KA7500 DIP-16 PWM Controller IC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991482224875,"sku":"\u003cnone\u003e","price":5.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ka7500b-dip16-pwm-ic.webp?v=1761545296","url":"https:\/\/keszoox.com\/products\/ka7500b-ka7500-dip16-pwm-controller-ic-tl494-equivalent-5pcs","provider":"Keszoox","version":"1.0","type":"link"}