Datasheet ADM7171 (Analog Devices) - 9

Data Sheet ADM7171 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 5 (mA T 3.01 N E 4 V) ( T 3.00 RR OU CU V 3 2.99 ND U 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
16 0
3.4 3.8 4.2 4.6 5.0 5.4 5.8 6.2 6.6
-019
V V IN (V) IN (V)
12298- 12298 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 = 10mA 160 6 ILOAD = 100mA ILOAD = 500mA ILOAD = 1000mA 140 ) ) V 5 m (mA ( 120 NT GE 4 100 RRE LTA O CU 80 D 3 T V UN OU 60 RO OP 2 R G D 40 1 20 0 0 –40 –5 25 85 125
-017
1 10 100 1000
-020
JUNCTION TEMPERATURE (°C) I
12298
LOAD (mA)
12298 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 RRE ( T CU 2.75 3 OUV ND U 2.70 O R 2 G 2.65 ILOAD = 5mA 2.60 I 1 LOAD = 10mA ILOAD = 100mA 2.55 ILOAD = 500mA ILOAD = 1000mA 0 2.50 0.1 1 10 100 1000
018
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4
021 98-
I
98-
LOAD (mA) V
122
IN (V)
122 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. E | Page 9 of 23 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS 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 ADM7171 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