Datasheet ADM7172 (Analog Devices) - 3

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Data Sheet ADM7172 SPECIFICATIONS
VIN = (VOUT + 0.5 V) or 2.3 V (whichever is greater), EN = VIN, ILOAD = 10 mA, CIN = COUT = 4.7 µF, TA = 25°C for typical specifications, TJ = −40°C to +125°C for minimum/maximum specifications, unless otherwise noted.
Table 2. Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT VOLTAGE RANGE VIN 2.3 6.5 V LOAD CURRENT ILOAD 2 A OPERATING SUPPLY CURRENT IGND ILOAD = 0 µA 0.7 2.0 mA ILOAD = 2 A 4.8 8.7 mA SHUTDOWN CURRENT IGND-SD EN = GND, VIN = 5 V 0.25 3.8 µA OUTPUT VOLTAGE ACCURACY Fixed Output Voltage Accuracy VOUT ILOAD = 10 mA, TJ = 25°C −0.5 +1 % 100 μA < ILOAD < 2 A, VIN = (VOUT + 0.5 V) to 6.5 V −1.5 +1.5 % Adjustable Output Voltage VSENSE ILOAD = 10 mA 1.194 1.200 1.212 V Accuracy 10 mA < ILOAD < 2 A, VIN = (VOUT + 0.5 V) to 6.5 V 1.182 1.218 V REGULATION Line ∆VOUT/∆VIN VIN = (VOUT + 0.5 V) to 6.5 V −0.1 +0.1 %/V Load ∆VOUT/∆ILOAD ILOAD = 100 μA to 2 A 0.1 0.3 %/A SENSE INPUT BIAS CURRENT SENSEI-BIAS 100 μA < ILOAD < 2 A, VIN = (VOUT + 0.5 V) to 6.5 V 1 nA DROPOUT VOLTAGE1 VDROPOUT ILOAD = 500 mA, VOUT = 3 V 42 70 mV ILOAD = 1 A, VOUT = 3 V 84 135 mV ILOAD = 2 A, VOUT = 3 V 172 270 mV OUTPUT NOISE OUTNOISE 10 Hz to 100 kHz, all fixed output voltages 6 µV rms 100 Hz to 100 kHz, all fixed output voltages 5 µV rms Noise Spectral Density 100 Hz, all fixed output voltages 110 nV/√Hz 1 kHz, all fixed output voltages 40 nV/√Hz 10 kHz, all fixed output voltages 20 nV/√Hz 100 kHz, all fixed output voltages 12 nV/√Hz POWER SUPPLY REJECTION RATIO PSRR 100 kHz, VIN = 4.0 V, VOUT = 3 V, ILOAD = 1.5 A, CSS = 0 nF 60 dB 100 kHz, VIN = 3.5 V, VOUT = 3 V, ILOAD = 1.5 A, CSS = 0 nF 53 dB 100 kHz, VIN = 3.3 V, VOUT = 3 V, ILOAD = 1.5 A, CSS = 0 nF 42 dB 1 MHz, VIN = 4.0 V, VOUT = 3 V, ILOAD = 1.5 A, CSS = 0 nF 31 dB 1 MHz, VIN = 3.5 V, VOUT = 3 V, ILOAD = 1.5 A, CSS = 0 nF 30 dB 1 MHz, VIN = 3.3 V, VOUT = 3 V, ILOAD = 1.5 A, CSS = 0 nF 20 dB TRANSIENT LOAD RESPONSE tTR-REC Time for output voltage to settle within ±VSETTLE from 1.5 μs VDEV for a 1 mA to 1.5 A load step, load step rise time = 400 ns VDEV Output voltage deviation due to 1 mA to 1.5 A load step 35 mV VSETTLE Output voltage deviation after transient load response 0.1 % time (tTR-REC) has passed, VOUT = 5 V, COUT = 4.7 µF START-UP TIME2 tSTART-UP VOUT = 5 V, CSS = 0 nF 380 µs VOUT = 5 V, CSS = 1 nF 1.0 ms SOFT START CURRENT ISS VIN = 5 V 0.5 1 1.5 µA CURRENT-LIMIT THRESHOLD3 ILIMIT 2.4 3.3 3.9 A VOUT PULL-DOWN RESISTANCE VOUT-PULL EN = 0 V, VOUT = 1 V 11 kΩ THERMAL SHUTDOWN Thermal Shutdown Threshold TSSD TJ rising 150 °C Thermal Shutdown Hysteresis TSSD-HYS 15 °C UNDERVOLTAGE THRESHOLDS Input Voltage Rising UVLORISE 2.28 V Input Voltage Falling UVLOFALL 1.94 V Hysteresis UVLOHYS 200 mV Rev. D | Page 3 of 23 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION ADISIMPOWER DESIGN TOOL CAPACITOR SELECTION Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties PROGRAMMABLE PRECISION ENABLE UNDERVOLTAGE LOCKOUT SOFT START NOISE REDUCTION OF THE ADM7172 IN ADJUSTABLE MODE EFFECT OF NOISE REDUCTION ON START-UP TIME CURRENT-LIMIT AND THERMAL OVERLOAD PROTECTION THERMAL CONSIDERATIONS TYPICAL APPLICATIONS CIRCUITS PRINTED CIRCUIT BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE