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UC3843A Arkusz danych(PDF) 2 Page - Unisonic Technologies |
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UC3843A Arkusz danych(HTML) 2 Page - Unisonic Technologies |
2 / 7 page UTCUC3842A/3843A LINEARINTEGRATEDCIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R103-002,A (continued) PARAMETRER SYMBOL VALUE UNIT Storage Temperature Tstg -65 ~ +150 °C Note 1: Ta>25 °C, PD derated with 8mW/°C. ELECTRICAL CHARACTERISTICS(0°C <=Ta<=70°C,VCC=15V,RT=10kΩ,CT=3.3nF,unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Reference Section Output Voltage VREF Tj=25 °C,Io=1mA 4.9 5 5.1 V Line Regulation ∆VREF 12<=VIN<=25V 6 20 mV Load Regulation ∆VREF 1<=Io=20mA 6 25 mV Temperature Stability (Note 2) 0.2 0.4 mV/ °C Total Output Variation Line, Load, Temp(note 2) 4.82 5.18 V Output Noise Voltage Vosc 10Hz<=f<=10kHz,Tj=25 °C (note 2) 50 uV Long Term Stability Ta=25 °C,1000Hrs(note 2) 5 25 mV Output Short Circuit ISC -30 -100 -180 mA Oscillator Section Initial Accuracy f Tj=25 °C 47 52 57 kHz Voltage Stability ∆f/∆Vcc 12<=Vcc<=25V 0.2 1 % Temperature Stability Tmin<=TA<=Tmax(note 2) 5 % Amplitude Vosc Vpin 4 peak to peak 1.7 V Error Amplifier Section Input Voltage VI(EA) Vpin 1=2.5V 2.42 2.50 2.58 V Input Bias Current IBIAS -0.3 -2 µA AVOL 2 <=Vo<=4V 60 90 dB Unity Gain Bandwidth Tj=25 °C (note 2) 0.7 1 MHz PSRR I2<=Vcc<=25V 60 70 dB Output Sink Current Isink Vpin 2=2.7V,Vpin 1=1.1V 2 6 mA Output Source Current Isource Vpin 2=2.3V,Vpin 1=5V -0.5 -0.8 mA Vout High VOH Vpin 2=2.3V, RL=15k Ω to GND 5 6 V Vout Low VOL Vpin 2=2.7V,Vpin 1=1.1V 0.7 1.1 V Current Sense section Gain GV (note 3,4) 2.85 3 3.15 V/V Maximum Input signal VI(MAX) Vpin 1=5V( note 3) 0.9 1 1.1 V PSRR 12<=Vcc<=25V 70 dB Input Bias Current IBIAS -2 -10 µA Delay to Output Vpin 3=0 to 2V 150 300 ns Output Section Output Low Level VOL Isink=20mA 0.1 0.4 V Isink=200mA 1.5 2.2 V Output High Level VOH Isource=20mA 13 13.5 V Isource=200mA 12 13.5 V Rise Time tR Tj=25 °C,CL=1nF(note 2) 50 150 ns Fall Time tF Tj=25 °C,CL=1nF(note 2) 50 150 ns Under-Voltage Lockout Output Section Start Threshold VTH(ST) UTC3842A 14.5 16 17.5 V UTC3843A 7.8 8.4 9 V Min. Operating Voltage VOPR(min) After Turn On UTC3842A 8.5 10 11.5 UTC3843A 7 7.6 8.2 V PWM Section Maximum Duty Cycle D(MAX) 95 97 100 % |
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