{"product_id":"st-3845b-high-performance-current-mode-pwm-controller","title":"ST 3845B High Performance Current Mode PWM Controller","description":"\u003cp data-mce-fragment=\"1\"\u003eSTMicroelectronics 3845B is a high Performance current mode PWM controller. The 3845B control IC family provides the features required to implement off-line or DC to DC fixed frequency current mode control schemes with a low external part count. Internally implemented circuits include a trimmed oscillator with start-up current less than 0.5mA for precise DUTY CYCLE CONTROL under voltage lock-out, a precision reference trimmed for accuracy at the error amp input, logic to ensure latched operation, a PWM comparator with current limit control, and a totem pole output stage designed to source or sink high peak current. In the off-state, the output stage is low, making it suitable for driving N-Channel MOSFETs.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTrimmed oscillator for precise frequency control\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eOscillator frequency guaranteed at 250KHz\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAutomatic feed forward compensation\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eLatching PWD for cycle-by-cycle current limiting\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eHigh current totem pole output\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eLow start-up and operating current \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca title=\"ST 3845B High Performance Current Mode PWM Controller\" href=\"https:\/\/pdf1.alldatasheet.es\/datasheet-pdf\/view\/25568\/STMICROELECTRONICS\/UC3845B.html\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5 data-mce-fragment=\"1\"\u003eSpecifications\u003c\/h5\u003e\n\u003ctable data-mce-fragment=\"1\" width=\"100%\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 66.6084%;\"\u003e Model\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 28.3916%;\"\u003e3845B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 66.6084%;\"\u003e Brand\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 28.3916%;\"\u003eSTMicroelectronics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 66.6084%;\"\u003e Mounting Type\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 28.3916%;\"\u003eSMD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 66.6084%;\"\u003e Package\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 28.3916%;\"\u003eSO8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 66.6084%;\"\u003e No. of Pin\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 28.3916%;\"\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 66.6084%;\"\u003e Supply Voltage \u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 28.3916%;\"\u003e30V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 66.6084%;\"\u003e Output Current\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 28.3916%;\"\u003e1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 66.6084%;\"\u003e Operating Temperature\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\" style=\"width: 28.3916%;\"\u003e-40~150°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ElectronifyIndia","offers":[{"title":"Default Title","offer_id":47026698420543,"sku":"SN32","price":22.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0824\/4628\/7167\/files\/C326A.webp?v=1709626459","url":"https:\/\/www.electronifyindia.com\/products\/st-3845b-high-performance-current-mode-pwm-controller","provider":"ElectronifyIndia","version":"1.0","type":"link"}