MAX16833CAUE/V+T Izibane ze-LED Abaqhubi be-High-Voltage HB LED Abaqhubi abane-Integrated High-Side Current Sense yangoku

I-MAX16833, MAX16833B, MAX16833C, MAX16833D, kunye ne-MAX16833G yincopho yangoku yemowudi elawulwa ngabaqhubi be-LED bokunyusa, i-buck-boost, i-SEPIC, i-flyback, kunye ne-topology ye-buck side topology. Umqhubi we-dimming eyenzelwe ukuqhuba i-p-channel yangaphandle kuthotho kunye nomtya we-LED pro vides ulawulo lobumnyama olubanzi. Eli nqaku libonelela ngokugqithisela ngokukhawuleza kwe-PWM ukutshintshela kwangoku kwii-LEDs ngaphandle kokugqithisa okwexeshana okanye iimeko zokungabikho kwamandla. Ukongeza kwi-PWM dimming, ii-ICs zibonelela ngokuncipha kwe-analog kusetyenziswa igalelo le-DC kwi-ICTRL. Ii-ICs ziziva i-LED yangoku kwicala eliphezulu lomtya we-LED.

I-resistor enye ukusuka kwi-RT / SYNC ukuya emhlabeni ibeka i-frequency yokutshintsha ukusuka kwi-100kHz ukuya kwi-1MHz, ngelixa isignali yewotshi yangaphandle idityaniswe ngokufanelekileyo kwi-RT/SYNC ivumela ii-ICs ukuba zihambelane newotshi yangaphandle. Kwi-MAX16833/C/G, i-frequency switching frequency inokudityaniswa kwi-spread-spectrum applications. I-MAX16833B / D endaweni yoko inikezela nge-voltage ye-reference ye-1.64V kunye nokunyamezela kwe-2%.

I-ICs isebenza kuluhlu olubanzi lwe-5V-to-65V yokubonelela kwaye iquka i-3A isinki / umqhubi wesango lomthombo wokuqhuba i-MOSFET yamandla kwizicelo zomqhubi we-LED wamandla aphezulu. Iimpawu ezongezelelweyo ziquka i-fault-indicator output (FLT) kwiimeko ezifutshane okanye ezingaphezulu kweqondo lokushisa kunye ne-overvolt yobudala-ukukhusela i-input (OVP) yokukhusela ukugqithisa. Imvakalelo yangoku ekwicala eliphezulu idityaniswe ne-p-channel dimming MOSFET ivumela i-terminal eqinisekileyo yomtya we-LED ukuba ibe mfutshane ukuya kwitheminali yokufaka i-positive okanye kwi-terminal yegalelo elibi ngaphandle komonakalo. Olu luphawu olulodwa lwee-ICs.