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UC3842A-S08-R Datasheet(PDF) 4 Page - Unisonic Technologies |
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UC3842A-S08-R Datasheet(HTML) 4 Page - Unisonic Technologies |
4 / 9 page UC3842A/3843A LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 4 of 9 www.unisonic.com.tw QW-R103-002,D ELECTRICAL CHARACTERISTICS(Cont.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Current Sense section Gain GV (Note 2,3) 2.85 3 3.15 V/V Maximum Input signal VI(MAX) Vpin 1=5V( Note 2) 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 IO(SINK)=20mA 0.1 0.4 V Low VOL IO(SINK)=200mA 1.5 2.2 V IO(SOURCE)=20mA 13 13.5 V Output Level High VOH IO(SOURCE)=200mA 12 13.5 V Rise Time tR TJ=25°C,CL=1nF(Note 1) 50 150 ns Fall Time tF TJ=25°C,CL=1nF(Note 1) 50 150 ns Under-Voltage Lockout Output Section 3842A 14.5 16 17.5 V Start Threshold 3843A VTH(ST) 7.8 8.4 9 V 3842A 8.5 10 11.5 V Min. Operating Voltage 3843A VOPR(MIN) After Turn On 7 7.6 8.2 V PWM Section MAX D(MAX) 95 97 100 % Duty Cycle Min D(MIN) 0 % Total Standby Current Start-up Current IST 0.12 0.3 mA Operating Supply Current ICC(OPR) Vpin 2=Vpin 3=0V 11 17 mA VCC Zener Voltage Vz ICC=25mA 34 V Note:1.These parameters, although guaranteed ,are not 100% tested in production. 2. Parameters measured at trip point of latch with Vpin 2=0. 3. Gain defined as: ∆Vpin 1 ∆Vpin 3 A= ; 0≦Vpin3≦0.8V 4. Adjust VCC above the start threshold before setting at 15V. |
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