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SC900AEVB датащи(PDF) 3 Page - Semtech Corporation |
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SC900AEVB датащи(HTML) 3 Page - Semtech Corporation |
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3 / 23 page ![]() 3 © 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT SC900A Electrical Characteristics (Cont.) Parameter Symbol Conditions Min Typ Max Units LDO Regulators Quiescent Supply Current I Q All LDOs active in default states 190 360 μA Quiescent Supply Current at Start-Up I QSUP LDO A, B, C active in default states V OUT + 0.5V < VIN < 5.5V 125 μA Current Limit I LIM 250 410 650 mA Bypass Capacitor C BYP Ceramic, low ESR 2.2 μF LDO Regulator A (Core Supply) Output Voltage Accuracy VOA A 1.45V ≤ V OUT ≤ 3.00V V OUT + 0.2V ≤ VIN ≤ 5.5V I OUT = 1mA, TA = 25°C -3 +3 % Output Voltage Accuracy at 2.80V (DAC = 11011) VOAS A I OUT = 1mA -2 +2 % Output Voltage Accuracy at 1.80V (DAC = 00011) I OUT = 1mA, TA = 25°C -3 +3 % Output Voltage Accuracy at 2.80V (DAC = 11011) V OUT + 0.5V ≤ VIN ≤ 5.5V, I OUT = 200mA -3.5 +3.5 % Maximum Output Current IOMAX A 200 mA Default Setting: ON VO A-HI VASEL - High 2.80 V VO A-LO VASEL - Low 1.80 V Line Regulation at 1.8V, 2.8V LINEREG A I OUT = 1mA, VOUT + 0.2V < VIN < 5.5V 2.5 12 mV Load Regulation at 1.8V, 2.8V LOADREG A 1mA < I OUT <200mA -3 -20 mV Dropout Voltage V DA V OUT = 3.0V, IOUT = 200mA 200 250 mV Power Supply Rejection Ratio PSRR A f = 10Hz - 1kHz, C BYP = 0.1μF, I OUT = 50mA, 2.5V ≤ V OUT ≤ 3.0V 60 dB Output Voltage Noise(2) e n-A f = 10Hz - 100kHz, I OUT = 50mA, C VREF = 0.1μF, COUT = 2.2μF, 2.5V ≤ V OUT ≤ 3.0V 45 μV RMS LDO Regulator B (DIGITAL I/O SUPPLY) Output Voltage Accuracy VOA B 1.45V ≤ V OUT ≤ 3.00V V OUT + 0.15V ≤ VIN ≤ 5.5V I OUT = 1mA, TA = 25°C -3 +3 % Output Voltage Accuracy at 2.80V (DAC = 11011) VOAS B I OUT = 1mA -2 +2 % V OUT + 0.5V ≤ VIN ≤ 5.5V, I OUT = 150mA -3.5 +3.5 % Maximum Output Current IOMAX B 150 mA |
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