Datasheet ADP5302 (Analog Devices) - 9

Data Sheet ADP5302 100 100 90 90 80 80 70 70 (%) 60 (%) 60 Y Y C C N 50 N IE 50 IE FFIC 40 FFIC 40 E V E IN = 2.5V VIN = 2.5V 30 V 30 IN = 3.0V VIN = 3.0V V V 20 IN = 3.6V 20 IN = 3.6V VIN = 4.2V VIN = 4.2V 10 VIN = 5.0V 10 VIN = 5.0V VIN = 6.0V VIN = 6.0V 0 0 0 100 200 300 400 500
010
0 100 200 300 400 500
013
LOAD CURRENT (mA)
13443-
LOAD CURRENT (mA)
13443- Figure 10. PWM Efficiency vs. Load Current, VOUT = 1.5 V Figure 13. PWM Efficiency vs. Load Current, VOUT = 1.8 V
100 100 90 90 80 80 70 70 (%) 60 (%) 60 Y Y C C N 50 N IE 50 IE FFIC 40 FFIC 40 E E 30 V 30 IN = 3.0V V VIN = 3.6V 20 IN = 3.6V 20 V V IN = 4.2V IN = 4.2V V 10 VIN = 5.0V 10 IN = 5.0V V V IN = 6.0V IN = 6.0V 0
1 1
0 0 100 200 300 400 500
0
0 100 200 300 400 500
014
LOAD CURRENT (mA)
13443-
LOAD CURRENT (mA)
13443- Figure 11. PWM Efficiency vs. Load Current, VOUT = 2.5 V Figure 14. PWM Efficiency vs. Load Current, VOUT = 3.3 V
160 700 –40°C –40°C 140 +25°C +25°C +85°C 600 +85°C +125°C A) 120 A) +125°C n n ( ( 500 NT 100 NT 80 CURRE 400 N CURRE W NT 60 DO CE S 300 E HUT UI S 40 Q 200 20 0 100
012 015
2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.5 2.3 2.9 3.5 4.1 4.7 5.3 5.9 6.5
13443-
V
13443-
IN (V) VIN (V)
Figure 12. Shutdown Current vs. VIN, EN = Low Figure 15. Hysteresis Quiescent Current vs. VIN, SYNC/MODE = Low Rev. A | Page 9 of 22 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BUCK REGULATOR OPERATIONAL MODES PWM Mode Hysteresis Mode Mode Selection OSCILLATOR AND SYNCHRONIZATION ADJUSTABLE AND FIXED OUTPUT VOLTAGES UNDERVOLTAGE LOCKOUT (UVLO) ENABLE/DISABLE CURRENT LIMIT SHORT-CIRCUIT PROTECTION SOFT START STARTUP WITH PRECHARGED OUTPUT 100% DUTY OPERATION ACTIVE DISCHARGE VINOK FUNCTION STOP SWITCHING THERMAL SHUTDOWN APPLICATIONS INFORMATION EXTERNAL COMPONENT SELECTION SELECTING THE INDUCTOR OUTPUT CAPACITOR INPUT CAPACITOR EFFICIENCY Power Switch Conduction Losses Inductor Losses Driver Losses Transition Losses PRINTED CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE