Search results with tag "Uc3845"
UC3842/UC3843/UC3844/UC3845 SMPS Controller
www.mouser.comD(Max) UC3844/UC3845 47 48 50 % Min. Duty Cycle D(MIN)--- 0 % TOTAL STANDBY CURRENT Start-Up Current IST--0.45 1 mA Operating Supply Current ICC(OPR) Vpin3=Vpin2=ON - 14 17 mA Zener Voltage VZ ICC = 25mA 30 38 - V A ∆Vpin1 ∆Vpin3 =----- - UC3842,0 ≤ Vpin3 ≤ 0.8V
ON Semiconductor Is Now
www.onsemi.comUC3844, UC3845, UC2844, UC2845 High Performance Current Mode Controllers The UC3844, UC3845 series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−to−DC converter applications offering the designer a cost effective solution with minimal external components. These integrated
UCx84x Current-Mode PWM Controllers
www.ti.com6 UC1842, UC2842, UC3842, UC1843, UC2843, UC3843 UC1844, UC2844, UC3844, UC1845, UC2845, UC3845 SLUS223E –APRIL 1997–REVISED JANUARY 2017 www.ti.com Product Folder Links: UC1842 UC2842 UC3842 UC1843 UC2843 UC3843 UC1844 UC2844 UC3844 UC1845 UC2845 UC3845
UC3842/UC3843/UC3844/UC3845 SMPS Controller
www.soloelectronica.netD(Max) UC3844/UC3845 47 48 50 % Min. Duty Cycle D(MIN)--- 0 % TOTAL STANDBY CURRENT Start-Up Current IST--0.45 1 mA Operating Supply Current ICC(OPR) Vpin3=Vpin2=ON - 14 17 mA Zener Voltage VZ ICC = 25mA 30 38 - V A ∆Vpin1 ∆Vpin3 =----- - UC3842,0 ≤ Vpin3 ≤ 0.8V
UC3842/3/4/5 Provides Low-Cost Current-Mode Control
www.ti.comUC3845 Throughout the text, the UC3842 part number will be referenced, however the generalized circuits and performance characteristics apply to each member of the UC3842 series unless otherwise noted. A review of cur-rent mode control and its benefits is included and meth-ods of avoiding common pitfalls are mentioned. The final
UCx84x Current-Mode PWM Controllers - Texas Instruments
www.ti.comuc1844, uc2844, uc3844, uc1845, uc2845, uc3845 SLUS223F –APRIL 1997–REVISED APRIL 2020 www.ti.com Product Folder Links: UC1842 UC2842 UC3842 UC1843 UC2843 UC3843 UC1844 UC2844 UC3844 UC1845
UC3842/3/4/5 Provides Low-Cost Current-Mode …
www.ti.comAPPLICATION NOTE MAXIMUM DUTY CYCLE The UC3842 and UC3843 have a maximum duty cycle of approximately 100%, whereas the UC3844 and UC3845 are clamped to 50% maximum by an internal toggle flip
U-134 APPLICATION NOTE - Texas Instruments
www.ti.comAPPLICATION NOTE U-134 UC3854 Controlled Power Factor Correction Circuit Design PHILIP C. TODD ABSTRACT This Application Note describes the concepts and design of a boost preregulator for power factor correc-