Datasheet ADP7157 (Analog Devices) - 3

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Data Sheet ADP7157 SPECIFICATIONS
V 1 IN = VOUT_MAX + 0.5 V; VEN = VIN; ILOAD = 10 mA; CIN = COUT = 10 µF; CREG = CREF = CBYP = 1 µF; TA = 25°C for typical specifications; TA = −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 5.5 V LOAD CURRENT ILOAD 1.2 A OPERATING SUPPLY CURRENT IGND ILOAD = 0 µA 4.0 8.0 mA ILOAD = 1.2 A 7.0 12.0 mA SHUTDOWN CURRENT IIN-SD EN = ground 0.2 4 µA NOISE2 VOUT = 1.2 V to 3.3 V Output Noise OUTNOISE 10 Hz to 100 kHz 1.6 µV rms 100 Hz to 100 kHz 0.9 µV rms Noise Spectral Density OUTNSD 10 kHz to 1 MHz 1.7 nV/√Hz POWER SUPPLY REJECTION RATIO2 PSRR ILOAD = 1.2 A ADP7157-01 1 kHz to 100 kHz, VIN = 2.3 V, VOUT = 1.8 V 70 dB 1 MHz, VIN = 2.3 V, VOUT = 1.8 V 52 dB ADP7157-02 1 kHz to 100 kHz, VIN = 2.8 V, VOUT = 2.3 V 72 dB 1 MHz, VIN = 2.8 V, VOUT = 2.3 V 53 dB ADP7157-03 1 kHz to 100 kHz, VIN = 3.4 V, VOUT = 2.9 V 75 dB 1 MHz, VIN = 3.4 V, VOUT = 2.9 V 55 dB ADP7157-04 1 kHz to 100 kHz, VIN = 3.8 V, VOUT = 3.3 V 82 dB 1 MHz, VIN = 3.8 V, VOUT = 3.3 V 55 dB OUTPUT VOLTAGE ACCURACY Output Voltage3 VOUT 1.2 3.3 V Initial Accuracy VOUT ILOAD = 10 mA, TA = 25°C −0.6 +0.6 % 10 mA < ILOAD < 1.2 A, TA = 25°C −1.0 +1.0 % 10 mA < ILOAD < 1.2 A, TA = −40°C to +125°C −1.5 +1.5 % REGULATION Line ∆VOUT/∆VIN VIN = VOUT_MAX + 0.5 V to 5.5 V −0.1 +0.1 %/V Load4 ∆VOUT/∆IOUT IOUT = 10 mA to 1.2 A 0.3 %/A CURRENT-LIMIT THRESHOLD5 ILIMIT REF 22 mA VOUT 1.4 1.8 2.4 A DROPOUT VOLTAGE6 VDROPOUT IOUT = 600 mA, VOUT = 3.3 V 60 80 mV IOUT = 1.2 A, VOUT = 3.3 V 120 170 mV PULL-DOWN RESISTANCE EN = 0 V, VIN = 5.5 V VOUT VOUT-PULL VOUT = 1 V 650 Ω VREG VREG-PULL VREG = 1 V 31 kΩ REF VREF-PULL VREF = 1 V 850 Ω BYP VBYP-PULL VBYP = 1 V 650 Ω START-UP TIME2, 7 VOUT = 3.3 V VOUT tSTART-UP 1.2 ms VREG tREG-START-UP 0.6 ms REF tREF-START-UP 0.5 ms THERMAL SHUTDOWN2 Threshold TSSD TJ rising 150 °C Hysteresis TSSD-HYS 15 °C Rev. B | Page 3 of 23 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION ADIsimPOWER DESIGN TOOL CAPACITOR SELECTION Output Capacitor Input and VREG Capacitor REF Capacitor BYP Capacitor Capacitor Properties UNDERVOLTAGE LOCKOUT (UVLO) PROGRAMMABLE PRECISION ENABLE START-UP TIME REF, BYP, AND VREG PINS CURRENT-LIMIT AND THERMAL SHUTDOWN THERMAL CONSIDERATIONS Thermal Characterization Parameter (ΨJB) PSRR PERFORMANCE PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE