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ACT88326VA Datasheet(PDF) 12 Page - Active-Semi, Inc |
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ACT88326VA Datasheet(HTML) 12 Page - Active-Semi, Inc |
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12 / 41 page  ACT88326VA Rev 1.0, 29-May-2018 Innovative PowerTM www.active-semi.com ActiveSwitcherTM is a trademark of Active-Semi. Copyright © 2018 Active-Semi, Inc 12 INTERNAL STEP-DOWN DC/DC ELECTRICAL CHARACTERISTICS REGULATOR: (BUCK2/3) (AVIN = VIN = 5V, TA = 25°C, unless otherwise specified.) PARAMETER CONDITIONS MIN TYP MAX UNIT Input Operating Voltage Range 2.7 5.5 V Buck2 Output Voltage Programming Range 1 See CMI section for programming details 0.6 3.0 V Buck2 Output Voltage Programming Range 2 See CMI section for programming details 0.8 4.0 V Buck3 Output Voltage Programming Range See CMI section for programming details 0.8 4.0 V Standby Supply Current, Low Power Mode Enabled VOUTx = 103%, Regulator Enabled, No load, VOUTx = default CMI voltage 40 µA Shutdown Current VIN = 5.0V, Regulator Disabled 0.1 1 µA Output Voltage Accuracy VOUTx = default CMI voltage, IOUTx = 1A (continuous PWM mode) -1% VNOM 1% V Line Regulation VOUTx = default CMI voltage, PWM Regulation 0.1 % Load Regulation VOUTx = default CMI voltage, PWM Regulation 0.1 % Power Good Threshold VOUTx Rising 90 92.5 95 %VNOM Power Good Hysteresis VOUTx Falling 3 %VNOM Overvoltage Fault Threshold VOUTx Rising 107.5 110 112.5 %VNOM Overvoltage Fault Hysteresis VOUTx Falling 3 %VNOM Switching Frequency VOUTx ≥ 20% of VNOM -5% 1.125 / 2.25 +5% MHz Soft-Start Period Tset 10% to 90% VNOM 480 750 µs Startup Time Time from Enable to PG 700 µs Current Limit, Cycle-by-Cycle (accuracy is only valid for the specific CMI’s default setting) ILIM[1:0] = 00 ILIM[1:0] = 01 ILIM[1:0] = 10 ILIM[1:0] = 11 3.7 3.1 2.6 2.2 4.6 3.9 3.2 2.6 5.4 4.5 3.8 3.1 A Current Limit, Shutdown % compared to Current Limit, cycle-by-cycle 112.5 122.5 132.5 % Current Limit, Warning % compared to Current Limit, cycle-by-cycle 67.5 75 82.5 % PMOS On-Resistance ISW_Bx = -500mA, VIN = 5V 80 mΩ NMOS On-Resistance ISW_Bx = 500mA, VIN = 5V 50 mΩ SW Leakage Current VIN = 5.5V, VSW_Bx = 0 or 0V 1 µA VIN = 5.5V, VSW_Bx = 0 or 5.5V 1 µA Dynamic Voltage Scaling Rate 3.50 mV/us Output Pull Down Resistance Enabled when regulator disabled 9.4 20 Ω |
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