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UC3843BL-S08-R Datasheet(PDF) 5 Page - Unisonic Technologies |
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UC3843BL-S08-R Datasheet(HTML) 5 Page - Unisonic Technologies |
5 / 11 page UC3842B/3843B LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 5 of 11 www.unisonic.com.tw QW-R103-012.D ELECTRICAL CHARACTERISTICS (Cont.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Output Voltage Swing Low State VOL VFB=2.7V, RL=15k to VREF 0.8 1.1 V CURRENT SENSE SECTION Current Sense Input Voltage Gain GV (Note 3,4) 2.85 3.0 3.15 V/V Maximum Current Sense Input Threshold VI(THR) (Note 3) 0.9 1.0 1.1 V Power Supply Rejection Ratio PSRR 12≤Vcc≤25V (Note 3) 70 dB Input Bias Current II(BIAS) -2 -10 μA Propagation Delay tD(IN/OUT) Current Sense Input to Output 150 300 ns OUTPUT SECTION ISINK=20mA 0.1 0.4 V Output Low Voltage VOL ISINK=200mA 1.6 2.2 V ISOURCE=20mA 13 13.5 V Output High Voltage VOH ISOURCE=200mA 12 13.4 V Output Voltage with UVLO Activated VOL (UVLO) VCC=6.0V,ISINK=1.0mA 0.1 1.1 V Output Voltage Rise Time tR TJ =25°C,CL=1nF 50 150 ns Output Voltage Fall Time tF TJ =25°C,CL=1nF 50 150 ns UNDER-VOLTAGE LOCKOUT SECTION UTC UC3842B 14.5 16 17.5 V Startup Threshold VTHR UTC UC3843B 7.8 8.4 9 V UTC UC3842B 8.5 10 11.5 V Min. Operating Voltage After Turn-on(Vcc) VCC(MIN) UTC UC3843B 7.0 7.6 8.2 V PWM SECTION MAX 94 96 % Duty Cycle MIN DC 0 % Total DEVICE Power Startup Supply Current ICC+IC VCC=6.5V for UC3843B VCC=14V for UC3842B 0.3 0.5 mA Power Operating Supply Current ICC+IC Note2 12 17 mA Power Supply Zener Voltage VZ ICC=25mA 30 36 V 1. 2. 3. Maximum Package power dissipation limits must be observed. Adject VCC above the Startup threshold before setting to 15V. This parameter is measured at the latch trip point with VFB=0V. ΔV Output Compensation Note: 4. Comparator gain is defined as : GV ΔV Current Sense Input |
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