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UC3550G-XX-AF5-R Datasheet(PDF) 4 Page - Unisonic Technologies |
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UC3550G-XX-AF5-R Datasheet(HTML) 4 Page - Unisonic Technologies |
4 / 10 page UC3550 CMOS IC UNISONICTECHNOLOGIESCO.,LTD 4 of 10 www.unisonic.com.tw QW-R502-082,B ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage VOUT -0.3~8 V EXT Voltage VEXT -0.3 ~ 8 V EXT Sink/Source Current IEXT -150 ~ +150 mA CE Input Voltage Range VCE -0.3 ~ 12.0 V CE Input Current Range ICE -155 ~ 155 mA Power Dissipation (Ta=25°C) PD 500 mW Junction Temperature TJ +150 °C Operating Temperature TOPR -40 ~ +85 °C Storage Temperature TSTG -55 ~ +150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. THERMAL DATA PARAMETER SYMBOL RATINGS UNIT Junction to Ambient θJA 250 °C/W ELECTRICAL CHARACTERISTICS (Ta=25°C, fOSC=300kHz, unless otherwise specified) UC3550-3.3V PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT OSCILLATOR Frequency fOSC VOUT=VSET×0.96 240 300 360 kHz Frequency Temperature Coefficient f △ Ta=-40°C ~ 85°C 0.10 %/°C Maximum PWM Duty Cycle DMAX VOUT=VSET×0.96 70 80 90 % Minimum Start-up Voltage VSTART1 IOUT=0mA 800 900 mV Minimum Start-up Voltage VSTART2 IOUT=1mA 900 1000 mV Minimum Start-up Voltage Temperature Coefficient V △ START Ta=-40°C ~ 85°C -1.6 mV/°C Minimum Operation Hold Voltage VOPR IOUT=0mA 600 700 mV Soft-Start Time tSS VOUT=VSET 60 250 ms CE (PIN 1) CE Input Voltage : High State, Device Enabled VCEH 900 mV Low State, Device Disabled VCEL VOUT=VSET×0.96 680 mV CE Input Current : High State, Device Enabled ICEH VOUT=VCE=5.0V -0.5 0 0.5 μA Low State, Device Disabled ICEL VOUT=5.0V, VCE=0V 0 0.15 0.5 μA EXT (PIN 5) EXT “H” REXTH VEXT=VOUT-0.4V 11 15 Ω ON Resistance EXT “L” REXTL VEXT=0.4V 8 12 Ω TOTAL DEVICE Output Voltage VOUT 3.218 3.3 3.383 V Output Voltage temperature coefficient V △ OUT Ta=-40 ~ 85°C 150 ppm/°C Operating Current IDD VOUT=VCE=VSET×0.96 103 160 μA Stand-by Current ISTN-BY VOUT=VCE=VSET+0.5V 15 38 μA Off-State Current IOFF VOUT=5.0V, VCE=0V, Ta=-40 ~ +85°C 0.6 1.5 μA Efficiency η IOUT = 200mA, VIN = 2.0V 80 88 % |
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