Datasheet ADP124, ADP125 (Analog Devices) - 8

ADP124/ADP125 Data Sheet 0.7 3.35 I 0.6 3.30 OUT = 10mA IOUT = 100mA I A) OUT = 300mA 3.25 µ 0.5 I ( VIN = 5.50 OUT = 500mA NT VIN = 5.40 V 3.20 IN = 5.20 0.4 VIN = 5.00 (V) VIN = 4.40 3.15 UT N CURRE 0.3 V O W IN = 4.20 V VIN = 3.80 DO 3.10 0.2 HUT S 3.05 0.1 3.00 0 2.95 –50 –25 0 25 50 75 100 125
011
3.00 3.10 3.20 3.30 3.40 3.50 3.60
014
TEMPERATURE (°C) V
08476-
IN (V)
08476- Figure 13. Shutdown Current vs. Temperature at Various Input Voltages Figure 16. Output Voltage vs. Input Voltage (in Dropout)
120 –10 –20 100 IOUT = 100µA –30 IOUT = 1mA IOUT = 10mA 80 ) –40 IOUT = 100mA mV IOUT = 300mA ( B) d I –50 OUT = 500mA UT 60 O RR ( P S –60 P DRO 40 –70 –80 20 VIN = VOUT +1V –90 VRIPPLE = 50mV CIN = COUT = 1µF 0 –100 1 10 100 1000
012
10 100 1k 10k 100k 1M 10M
015
IOUT (mA) FREQUENCY (Hz)
08476- 08476- Figure 14. Dropout Voltage vs. Load Current Figure 17. Power Supply Rejection Ratio vs. Frequency, VOUT = 2.8 V, VIN = 3.8 V
450 –10 400 –20 IOUT = 100µA 350 –30 IOUT = 1mA IOUT = 10mA 300 –40 IOUT = 100mA I I OUT = 300mA A) 250 OUT = 10mA B) I µ OUT = 500mA I –50 d ( OUT = 100mA I ND OUT = 300mA 200 RR ( I G I –60 OUT = 500mA S P 150 –70 100 –80 VIN = VOUT +1V 50 –90 VRIPPLE = 50mV CIN = COUT = 1µF 0 –100 3.00 3.10 3.20 3.30 3.40 3.50 3.60 3.70
013
10 100 1k 10k 100k 1M 10M
016
VIN (V) FREQUENCY (Hz)
08476- 08476- Figure 15. Ground Current vs. Input Voltage (in Dropout) Figure 18. Power Supply Rejection Ratio vs. Frequency, VOUT = 3.3 V, VIN = 4.3 V Rev. D | Page 8 of 20 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUITS GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS RECOMMENDED CAPACITOR SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION CAPACITOR SELECTION Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties UNDERVOLTAGE LOCKOUT ENABLE FEATURE CURRENT LIMIT AND THERMAL OVERLOAD PROTECTION THERMAL CONSIDERATIONS JUNCTION TEMPERATURE CALCULATIONS PRINTED CIRCUIT BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE