Datasheet ADM7172 (Analog Devices) - 9

Data Sheet ADM7172 3.05 7 ILOAD = 100µA ILOAD = 100µA 3.04 ILOAD = 10mA ILOAD = 10mA ILOAD = 100mA 6 ILOAD = 100mA 3.03 ILOAD = 500mA ILOAD = 500mA ILOAD = 1000mA ILOAD = 1000mA 3.02 ILOAD = 2000mA 5 ILOAD = 2000mA mA) ( 3.01 NT 4 (V) 3.00 UT OV 3 2.99 UND CURRE 2.98 RO 2 G 2.97 1 2.96 2.95 0 3.4 3.8 4.2 4.6 5.0 5.4 5.8 6.2 6.6
016
3.4 3.8 4.2 4.6 5.0 5.4 5.8 6.2 6.6
019
VIN (V) V
12250-
IN (V)
12250- Figure 16. Output Voltage (VOUT) vs. Input Voltage (VIN), VOUT = 3 V Figure 19. Ground Current vs. Input Voltage (VIN), VOUT = 3 V
7 180 ILOAD = 100µA ILOAD = 500mA ILOAD = 10mA ILOAD = 1000mA 160 6 ILOAD = 100mA ILOAD = 2000mA ) 140 V 5 mA) m ( ( 120 NT GE 4 100 OLTA 3 T V 80 UND CURRE OU 60 RO OP 2 R G D 40 1 20 0 0 –40 –5 25 85 125
017
1 10 100 1000 10000
020
JUNCTION TEMPERATURE (°C)
12250-
ILOAD (mA)
12250- Figure 17. Ground Current vs. Junction Temperature, VOUT = 3 V Figure 20. Dropout Voltage vs. Load Current (ILOAD), VOUT = 3 V
7 3.05 3.00 6 2.95 5 2.90 mA) ( 2.85 NT 4 (V) 2.80 UT O 2.75 3 V UND CURRE 2.70 RO 2 2.65 G ILOAD = 5mA ILOAD = 10mA 2.60 ILOAD = 100mA 1 ILOAD = 500mA 2.55 ILOAD = 1000mA ILOAD = 2000mA 0 2.50 0.1 1 10 100 1000 10000
018
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4
021
I V LOAD (mA) IN (V)
12250- 12250- Figure 18. Ground Current vs. Load Current (ILOAD), VOUT = 3 V Figure 21. Output Voltage (VOUT) vs. Input Voltage (VIN) in Dropout, VOUT = 3 V Rev. D | Page 9 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