Datasheet ADP1720 (Analog Devices) - 8

ADP1720 300 3.5 3.0 250 ILOAD = 50mA 2.5 200 V) ) (m A 2.0 T (m OU 150 D OP I 1.5 LOAD = R I GN D 25mA V 100 I 1.0 LOAD = 10mA 50 ILOAD = 0.5
1
1mA
3 01 01 1- 1- 11 11
0
06
0
06
1 10 100 4.9 5.0 5.1 5.2 5.3 5.4 ILOAD (mA) VIN (V)
Figure 11. Dropout Voltage vs. Load Current Figure 13. Ground Current vs. Input Voltage (in Dropout)
5.05 0 ILOAD = 1mA VIN = 8V 5.00 –10 VOUT = 1.6V COUT = 1µF 4.95 –20 VRIPPLE = 50mV –30 4.90 1mA ) ILOAD = 50mA –40 4.85 B) 10mA (V d T I ( LOAD = 25mA –50 OU RR V 4.80 S I P LOAD = 10mA –60 100µA 4.75 –70 4.70 –80 4.65
2 01
–90
14 1- 0 1- 11 11
4.60
06
–100
06
4.9 5.0 5.1 5.2 5.3 5.4 10 100 1k 10k 100k 1M 10M VIN (V) FREQUENCY (Hz)
Figure 12. Output Voltage vs. Input Voltage (in Dropout) Figure 14. Power Supply Rejection Ratio vs. Frequency (1.6 V Adjustable Output) Rev. A | Page 8 of 16 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUITS GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ADJUSTABLE OUTPUT VOLTAGE(ADP1720 ADJUSTABLE) APPLICATIONS INFORMATION CAPACITOR SELECTION Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties CURRENT LIMIT AND THERMAL OVERLOAD PROTECTION THERMAL CONSIDERATIONS PRINTED CIRCUIT BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE