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ADP1874ARQZ-1.0-R7 Datasheet(PDF) 3 Page - Analog Devices |
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ADP1874ARQZ-1.0-R7 Datasheet(HTML) 3 Page - Analog Devices |
3 / 44 page ADP1874/ADP1875 Rev. 0 | Page 3 of 44 SPECIFICATIONS All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC). VREG = 5 V, BST − SW = VREG − VRECT_DROP (see Figure 40 to Figure 42). VIN = 12 V. The specifications are valid for TJ = −40°C to +125°C, unless otherwise specified. Table 1. Parameter Symbol Test Conditions/Comments Min Typ Max Unit POWER SUPPLY CHARACTERISTICS High Input Voltage Range VIN CVIN = 22 μF(25 V rating) to PGND (at Pin 1) ADP1874ARQZ-0.3/ADP1875ARQZ-0.3 (300 kHz) 2.95 12 20 V ADP1874ARQZ-0.6/ADP1875ARQZ-0.6 (600 kHz) 2.95 12 20 V ADP1874ARQZ-1.0/ADP1875ARQZ-1.0 (1.0 MHz) 3.25 12 20 V Quiescent Current IQ_REG + IQ_BST FB = 1.5 V, no switching 1.1 mA Shutdown Current IREG,SD + IBST,SD EN < 600 mV 140 225 μA Undervoltage Lockout UVLO Rising VIN (see Figure 35 for temperature variation) 2.65 V UVLO Hysteresis Falling VIN from operational state 190 mV INTERNAL REGULATOR CHARACTERISTICS VREG and VREG_IN tied together and should not be loaded externally because they are intended to only bias internal circuitry VREG Operational Output Voltage VREG CVREG = 4.7 μF to PGND, 0.22 μF to GND, VIN = 2.95 V to 20 V ADP1874ARQZ-0.3/ADP1875ARQZ-0.3 (300 kHz) 2.75 5 5.5 V ADP1874ARQZ-0.6/ADP1875ARQZ-0.6 (600 kHz) 2.75 5 5.5 V ADP1874ARQZ-1.0/ADP1875ARQZ-1.0 (1.0 MHz) 3.05 5 5.5 V VREG Output in Regulation VIN = 7 V, 100 mA 4.82 4.981 5.16 V VIN = 12 V, 100 mA 4.83 4.982 5.16 V Load Regulation 0 mA to 100 mA, VIN = 7 V 32 mV 0 mA to 100 mA, VIN = 20 V 34 mV Line Regulation VIN = 7 V to 20 V, 20 mA 2.5 mV VIN = 7 V to 20 V, 100 mA 2 mV VIN to VREG Dropout Voltage 100 mA out of VREG, VIN ≤ 5 V 300 415 mV Short VREG to PGND VIN = 20 V 229 320 mA SOFT START Soft Start Period Calculation Connect external capacitor from SS pin to GND, CSS = 10 nF/ms 10 nF/ms ERROR AMPLIFER FB Regulation Voltage VFB TJ = 25°C 600 mV TJ = −40°C to +85°C 596 600 604 mV TJ = −40°C to +125°C 594.2 600 605.8 mV Transconductance Gm 320 496 670 μS FB Input Leakage Current IFB, LEAK FB = 0.6 V, EN = VREG 1 50 nA CURRENT-SENSE AMPLIFIER GAIN Programming Resistor (RES) Value from RES to PGND RES = 47 kΩ ± 1% 2.7 3 3.3 V/V RES = 22 kΩ ± 1% 5.5 6 6.5 V/V RES = none 11 12 13 V/V RES = 100 kΩ ± 1% 22 24 26 V/V SWITCHING FREQUENCY Typical values measured at 50% time points with 0 nF at DRVH and DRVL; maximum values are guaranteed by bench evaluation1 ADP1874ARQZ-0.3/ ADP1875ARQZ-0.3 (300 kHz) 300 kHz On-Time VIN = 5 V, VOUT = 2 V, TJ = 25°C 1120 1200 1280 ns Minimum On-Time VIN = 20 V 145 190 ns Minimum Off-Time 84% duty cycle (maximum) 340 400 ns |
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