Datasheet ADP1882, ADP1883 (Analog Devices) - 3

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ADP1882/ADP1883 SPECIFICATIONS
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC). VDD = 5 V, BST − SW = 5 V, VIN = 13 V. The specifications are valid for TJ = −40°C to +125°C, unless otherwise specified.
Table 1. Parameter Symbol Conditions Min Typ Max Unit
POWER SUPPLY CHARACTERISTICS High Input Voltage Range VIN ADP1882ARMZ-0.3/ADP1883ARMZ-0.3 (300 kHz) 2.75 12 20 V ADP1882ARMZ-0.6/ADP1883ARMZ-0.6 (600 kHz) 2.75 12 20 V ADP1882ARMZ-1.0/ADP1883ARMZ-1.0 (1.0 MHz) 3.0 12 20 V Low Input Voltage Range VDD CIN = 1 μF to PGND, CIN = 0.22 μF to GND ADP1882ARMZ-0.3/ADP1883ARMZ-0.3 (300 kHz) 2.75 5 5.5 V ADP1882ARMZ-0.6/ADP1883ARMZ-0.6 (600 kHz) 2.75 5 5.5 V ADP1882ARMZ-1.0/ADP1883ARMZ-1.0 (1.0 MHz) 3.0 5 5.5 V Quiescent Current IQ_DD + IQ_BST FB = 1.5 V, no switching 1.1 mA Shutdown Current IDD, SD + IBST, SD COMP/EN < 285 mV 140 215 μA Undervoltage Lockout UVLO Rising VDD (see Figure 35 for temperature variation) 2.65 V UVLO Hysteresis Falling VDD from operational state 190 mV SOFT START Soft Start Period See Figure 58 3.0 ms ERROR AMPLIFIER FB Regulation Voltage VFB TJ = 25°C 800 mV TJ = −40°C to +85°C 795.3 800 805.5 mV TJ = −40°C to +125°C 792.8 800 808.0 mV Transconductance GM 300 520 730 μs FB Input Leakage Current IFB, LEAK FB = 0.8 V, COMP/EN = released 1 50 nA CURRENT-SENSE AMPLIFIER GAIN Programming Resistor (RES) RES = 47 kΩ ± 1% 2.98 3.4 3.7 V/V Value from DRVL to PGND RES = 22 kΩ ± 1% 6 6.6 7.4 V/V RES = none 24.1 26.7 29.3 V/V RES = 100 kΩ ± 1% 12.1 13.4 14.7 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 ADP1882ARMZ-0.3/ 300 kHz ADP1883ARMZ-0.3 (300 kHz) On Time VIN = 5 V, VOUT = 2 V, TJ = 25°C 1115 1200 1285 ns Minimum On Time VIN = 20 V 145 190 ns Minimum Off Time 84% duty cycle (maximum) 340 400 ns ADP1882ARMZ-0.6/ 600 kHz ADP1883ARMZ-0.6 (600 kHz) On Time VIN = 5 V, VOUT = 2 V, TJ = 25°C 490 540 585 ns Minimum On Time VIN = 20 V, VOUT = 0.8 V 82 110 ns Minimum Off Time 65% duty cycle (maximum) 340 400 ns ADP1882ARMZ-1.0/ 1.0 MHz ADP1883ARMZ-1.0 (1.0 MHz) On Time VIN = 5 V, VOUT = 2 V, TJ = 25°C 280 312 340 ns Minimum On Time VIN = 20 V 60 85 ns Minimum Off Time 45% duty cycle (maximum) 340 400 ns Rev. 0 | Page 3 of 40 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE BOUNDARY CONDITION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS ADP1882/ADP1883 BLOCK DIAGRAM THEORY OF OPERATION STARTUP SOFT START PRECISION ENABLE CIRCUITRY UNDERVOLTAGE LOCKOUT THERMAL SHUTDOWN PROGRAMMING RESISTOR (RES) DETECT CIRCUIT VALLEY CURRENT-LIMIT SETTING HICCUP MODE DURING SHORT CIRCUIT SYNCHRONOUS RECTIFIER POWER SAVING MODE (PSM) VERSION (ADP1883) TIMER OPERATION PSEUDO-FIXED FREQUENCY APPLICATIONS INFORMATION FEEDBACK RESISTOR DIVIDER INDUCTOR SELECTION OUTPUT RIPPLE VOLTAGE (ΔVRR) OUTPUT CAPACITOR SELECTION COMPENSATION NETWORK Output Filter Impedance (ZFILT) Error Amplifier Output Impedance (ZCOMP) Error Amplifier Gain (GM) Current-Sense Loop Gain (GCS) Crossover Frequency EFFICIENCY CONSIDERATIONS Channel Conduction Loss MOSFET Driver Loss Switching Loss Diode Conduction Loss Inductor Loss INPUT CAPACITOR SELECTION THERMAL CONSIDERATIONS DESIGN EXAMPLE Input Capacitor Inductor Current Limit Programming Output Capacitor Feedback Resistor Network Setup Compensation Network Loss Calculations EXTERNAL COMPONENT RECOMMENDATIONS LAYOUT CONSIDERATIONS IC SECTION (LEFT SIDE OF EVALUATION BOARD) POWER SECTION DIFFERENTIAL SENSING TYPICAL APPLICATIONS CIRCUITS DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATIONS CIRCUIT SINGLE-INPUT, 600 kHz APPLICATIONS CIRCUIT DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATIONS CIRCUIT OUTLINE DIMENSIONS ORDERING GUIDE