Datasheet ADM7171 (Analog Devices) - 8

ADM7171 Data Sheet 1.8 40 VIN = 2.3V ILOAD = 5mA 1.6 VIN = 2.5V 35 ILOAD = 10mA VIN = 3.5V ILOAD = 100mA 1.4 VIN = 4.0V ILOAD = 500mA A) V 30 IN = 5.0V ) ILOAD = 1000mA (µ V T 1.2 IN = 6.5V N (mA T 25 N RRE 1.0 E CU RR 20 N 0.8 CU W ND 15 DO 0.6 U RO HUT G S 10 0.4 0.2 5 0 0 –50 –25 0 25 50 75 100 125
010
4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4
-013
TEMPERATURE (°C) V
12298-
IN (V)
12298 Figure 10. Shutdown Current vs. Temperature at Various Input Voltages Figure 13. Ground Current vs. Input Voltage (VIN) in Dropout, VOUT = 5 V
140 3.05 ILOAD = 100µA 3.04 ILOAD = 10mA 120 ILOAD = 100mA 3.03 ILOAD = 500mA ) V ILOAD = 1000mA 100 3.02 (m E AG 3.01 T 80 ) L V ( O T 3.00 V T 60 OU U V 2.99 O P O 40 2.98 DR 2.97 20 2.96 0 2.95
4
1 10 100 1000
011
–40 –5 25 85 125
01 98-
ILOAD (mA)
12298-
JUNCTION TEMPERATURE (°C)
122 Figure 11. Dropout Voltage vs. Load Current (ILOAD), VOUT = 5 V Figure 14. Output Voltage (VOUT) vs. Junction Temperature, VOUT = 3 V
5.10 3.05 5.05 3.04 5.00 3.03 4.95 3.02 ) 4.90 ) 3.01 V V ( ( T 4.85 T 3.00 OUV OU 4.80 V 2.99 4.75 I 2.98 LOAD = 5mA 4.70 ILOAD = 10mA 2.97 ILOAD = 100mA 4.65 ILOAD = 500mA 2.96 ILOAD = 1000mA 4.60 2.95 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4
012
0.1 1 10 100 1000
015 8-
VIN (V) I
1229
LOAD (mA)
12298- Figure 12. Output Voltage (VOUT) vs. Input Voltage (VIN) in Dropout, VOUT = 5 V Figure 15. Output Voltage (VOUT) vs. Load Current (ILOAD), VOUT = 3 V Rev. E | Page 8 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