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ACT88326VA Datasheet(PDF) 10 Page - Active-Semi, Inc |
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ACT88326VA Datasheet(HTML) 10 Page - Active-Semi, Inc |
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10 / 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 10 INTERNAL STEP-DOWN DC/DC ELECTRICAL CHARACTERISTICS REGULATOR: (BUCK1) (VIN = 5V, TA = 25°C, unless otherwise specified.) PARAMETER CONDITIONS MIN TYP MAX UNIT Input Operating Voltage Range 2.7 5.5 V Output Voltage Programming Range 1 See CMI section for programming details 0.6 3.0 V Output Voltage Programming Range 2 See CMI section for programming details 0.8 4.0 V Standby Supply Current, Low Power Mode Enabled VOUT_B1 = 103% setpoint, Enabled, VOUT_B1 setpoint = 1.0V, No Load 40 60 µA Shutdown Current Regulator Disabled 1 µA Output Voltage Accuracy VOUT_B1 = default CMI voltage, continuous PWM mode -1 VNOM 1 % Output Voltage Accuracy VOUT_B1 = default CMI voltage, PFM mode -2 VNOM 2 % Line Regulation VOUT_B1 = default CMI voltage, PWM Reg- ulation 0.1 %/V Load Regulation VOUT_B1 = at default CM, PWM Regulation 0.1 %/A Power Good Threshold VOUT_B1 Rising 90 92.5 95 %VNOM Power Good Hysteresis VOUT_B1 Falling 3 %VNOM Overvoltage Fault Threshold VOUT_B1 Rising 107.5 110 112.5 %VNOM Overvoltage Fault Hysteresis VOUT_B1 Falling 3 %VNOM Switching Frequency VOUT_B1 ≥ 20% of VNOM, Configurable -5% 1.125 / 2.25 +5% MHz Soft-Start Period Tset 10% to 90% VNOM 480 750 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 4.2 3.6 3.0 2.4 5.4 4.7 3.8 3.1 6.6 5.7 4.6 3.7 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 = -1A, VIN = 5.0V 40 50 mΩ NMOS On-Resistance ISW = 1A, VIN = 5.0V 16 25 mΩ SW Leakage Current VIN = 5.5V, VSW = 0V 1 µA VIN = 5.5V, VSW = 5.5V 1 µA Dynamic Voltage Scaling Rate 3.50 mV/µs Output Pull Down Resistance Enabled when regulator disabled 4.4 8.75 Ohms |
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