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UC3552L-SM1-T датащи(PDF) 4 Page - Unisonic Technologies |
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UC3552L-SM1-T датащи(HTML) 4 Page - Unisonic Technologies |
4 / 7 page UC3552 CMOS IC UNISONICTECHNOLOGIESCO.,LTD 4 of 7 www.unisonic.com.tw QW-R502-134.B ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT SW to GND -0.3 ~ +14 V IN, SHDN , VDD , FREQ to GND -0.3 ~ +6 V SS, EO to GND -1.3V ~ (VDD+0.3V) V RMS SW Pin Current ISW 1.2 A Continuous Power Dissipation (TC = 70°C) SOP-8 PD 350 mW MSOP-8 300 mW Junction Temperature TJ +125 °C Operating Temperature TOPR -20 ~ +85 °C Storage Temperature TSTG -45 ~ +125 °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. ELECTRICAL CHARACTERISTICS TC = +25°C, VDD =SHDN = 3V, FREQ = GND, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Supply Voltage VDD 2.6 5.5 V VDD Under Voltage Lockout UVLO When VDD is rising, typical hysteresis is 40mV; SW remains off below this level 2.25 2.38 2.52 V Quiescent Current IDD VDD = 1.3V, not switching 0.21 0.35 mA VDD = 1.0V, switching 1.2 5.0 Shutdown Current ISC SHDN = GND 0.1 10.0 µA ERROR AMPLIFIER Feedback Voltage VIN Level to produce VEO = 1.24V 1.22 1.240 1.258 V VDD Input Bias Current II(BIAS) VIN= 1.24V 0 40 nA Feedback-Voltage Line Regulation Level to produce VEO = 1.24V, 2.6V < VDD < 5.5V 0.05 0.15 %/V Transconductance gm ΔI = 5µA 70 105 240 µA/V Voltage Gain GV 1500 V/V OSCILLATOR Frequency fOSC FREQ = GND 540 640 740 kHZ FREQ = VDD 1100 1320 1600 Maximum Duty Cycle tDUTY FREQ = GND 79 85 92 % FREQ = VDD 85 N-CHANNEL SWITCH Current Limit ILIMIT VDD = 1V, Duty Cycle = 65% 1.2 1.6 2.3 A On-Resistance RON ISW = 1.2A 0.23 0.50 Ω Leakage Current ILEAK VSW = 12V 0.01 20.00 µA SOFT-START Reset Switch Resistance 300 Ω Charge Current VSS = 1.2V 1.5 4.0 7.0 µA CONTROL INPUTS Input Low Voltage VIL SHDN , FREQ; VDD = 2.6V ~ 5.5V 0.3VDD V Input High Voltage VIH SHDN , FREQ; VDD = 2.6V ~ 5.5V 0.7VDD V Hysteresis SHDN , FREQ 0.1VDD V FREQ Pull-Down Current IFREQ 1.8 5.0 9.0 µA SHDN Input Current ISHDN 0.001 1.000 µA |
Аналогичный номер детали - UC3552L-SM1-T |
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Аналогичное описание - UC3552L-SM1-T |
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