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ADM7172CP-EVALZ bảng dữ liệu(PDF) 4 Page - Analog Devices |
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ADM7172CP-EVALZ bảng dữ liệu(HTML) 4 Page - Analog Devices |
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4 / 24 page  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 Accuracy VSENSE ILOAD = 10 mA 1.194 1.200 1.212 V 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 VDEV for a 1 mA to 1.5 A load step, load step rise time = 400 ns 1.5 μs VDEV Output voltage deviation due to 1 mA to 1.5 A load step 35 mV VSETTLE Output voltage deviation after transient load response time (tTR-REC) has passed, VOUT = 5 V, COUT = 4.7 µF 0.1 % 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. C | Page 3 of 23 |
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