Datasheet ADM7172 (Analog Devices) - 10

ADM7172 Data Sheet 16 1.24 ILOAD = 100µA ILOAD = 10mA 14 1.23 ILOAD = 100mA ILOAD = 500mA 12 1.22 ILOAD = 1000mA I mA) LOAD = 2000mA ( 10 1.21 NT (V) 8 1.20 I UT LOAD = 5mA O ILOAD = 10mA V 6 I 1.19 UND CURRE LOAD = 100mA ILOAD = 500mA RO I G 4 LOAD = 1000mA 1.18 ILOAD = 2000mA 2 1.17 0 1.16 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4
022
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
025
VIN (V) V
12250-
IN (V)
12250- Figure 22. Ground Current vs. Input Voltage (VIN) in Dropout, VOUT = 3 V Figure 25. Output Voltage (VOUT) vs. Input Voltage (VIN), Adjustable Version, VOUT = 1.2 V
1.24 5.0 I I I LOAD = 100µA LOAD = 100µA LOAD = 500mA I I I LOAD = 10mA 4.5 LOAD = 10mA LOAD = 1000mA 1.23 I I I LOAD = 100mA LOAD = 100mA LOAD = 2000mA ILOAD = 500mA 4.0 1.22 ILOAD = 1000mA ILOAD = 2000mA mA) 3.5 ( 1.21 NT 3.0 (V) 1.20 2.5 UT OV 2.0 1.19 UND CURRE RO 1.5 1.18 G 1.0 1.17 0.5 1.16 0 –40 –5 25 85 125
023
–40 –5 25 85 125
026
JUNCTION TEMPERATURE (°C)
12250-
JUNCTION TEMPERATURE (°C)
12250- Figure 23. Output Voltage (VOUT) vs. Junction Temperature, Figure 26. Ground Current vs. Junction Temperature, Adjustable Version, Adjustable Version, VOUT = 1.2 V VOUT = 1.2 V
1.24 4.5 1.23 4.0 3.5 1.22 mA) ( 3.0 1.21 NT 2.5 (V) 1.20 UT OV 2.0 1.19 UND CURRE 1.5 RO 1.18 G 1.0 1.17 0.5 1.16 0 0.1 1 10 100 1000 10000
024
0.1 1 10 100 1000 10000
027
ILOAD (mA) I
12250-
LOAD (mA)
12250- Figure 24. Output Voltage (VOUT) vs. Load Current (ILOAD), Adjustable Version, Figure 27. Ground Current vs. Load Current (ILOAD), Adjustable Version, VOUT = 1.2 V VOUT = 1.2 V Rev. D | Page 10 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