Transcription of UC3842B - High Performance Current Mode Controllers
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UC3842B - High Performance Current Mode Controllers
DATA Semiconductor Components Industries, LLC, 2013 August, 2021 Rev. 181 Publication Order Number: UC3842B /DHigh PerformanceCurrent Mode ControllersUC3842B, UC3843B,UC2842B, UC2843 BThe UC3842B , UC3843B series are high Performance fixedfrequency Current mode Controllers . They are specifically designed forOff Line and DC DC converter applications offering the designera cost effective solution with minimal external components. Theseintegrated circuits feature a trimmed oscillator for precise duty cyclecontrol, a temperature compensated reference, high gain erroramplifier, Current sensing comparator, and a high Current totem poleoutput ideally suited for driving a power included are protective features consisting of input andreference undervoltage lockouts each with hysteresis, cycle by cyclecurrent limiting, programmable output deadtime, and a latch for singlepulse devices are available in an 8 pin dual in line and surfacemount (SOIC 8) plastic package as well as the 14 pin plastic surfacemount (SOIC 14).
Power Supply Rejection Ratio (VCC = 12 V to 25 V, Note 5) PSRR − 70 − − 70 − dB Input Bias Current IIB − −2.0 −10 − −2.0 −10 A Propagation Delay (Current Sense Input to Output) tPLH(In/Out) − 150 300 − 150 300 ns OUTPUT SECTION Output Voltage Low State (ISink = 20 mA) (ISink = 200 mA) UC284XB, UC384XB UC384XBV, UC2843D
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