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SM8122A Scheda tecnica(PDF) 4 Page - Nippon Precision Circuits Inc |
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SM8122A Scheda tecnica(HTML) 4 Page - Nippon Precision Circuits Inc |
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4 / 13 page  SM8122A NIPPON PRECISION CIRCUITS INC.—4 SPECIFICATIONS Absolute Maximum Ratings Electrical Characteristics VDD = 3.6V, VSS = 0V, Ta = 25°C unless otherwise noted Parameter Symbol Rating Unit Supply voltage range VDD −0.3 to 6.5 V Input voltage range VIN VSS – 0.3 to VDD + 0.3 V SW output voltage range VSW –0.3 to 30 V SW input current ISW 500 mA Power dissipation PD 250 (Ta = 25 °C) mW Operating temperature range Topr –40 to 85 °C Storage temperature range Tstg −55 to 125 °C Parameter Pin Symbol Condition Rating Unit min typ max Supply voltage VDD VDD 2.3 3.6 5.5 V Maximum output voltage SW VOUT – – 25 V Standby current VDD ISTB VCE = 0V – – 1.0 µA Quiescent current VDD IDD VFB = 1.0V – 200 400 µA VFB = 0V – 820 1600 µA SW-Tr ON resister SW RON ISW = 100mA, VDD = 3.6V – 2.0 3.0 Ω SW-Tr leak current SW ILEAK VSW = VDD – – 1.0 µA Switching frequency SW fOSC VFB = 0V 1.8 2.0 2.2 MHz Maximum duty SW Duty VFB = 0V 75 85 90 % Input voltage CE VIH 2.0 – – V VIL – – 0.6 V Input current CE ICE VCE = 3.6V – 5.0 10 µA FB IFB VFB = 0.5V –1.0 – 1.0 µA VOUT IVOUT VOUT = 25V 60 82 120 µA Soft-start time SW TSS1 Switching stop time 10 20 70 µs TSS2 Maximum duty restriction time – 500 – µs FB voltage FB VFB 0.49 0.50 0.51 V Coil inductance SW LSW – 4.7 10 µH Over voltage detection VOUT VOV 25 30.5 36 V Over voltage detection release VOVR 23 28.5 – V |
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