Datasheet ADP5310 (Analog Devices) - 10

ADP5310 Data Sheet 100 100 90 90 80 80 70 70 %) %) ( 60 ( 60 NCY 50 NCY 50 E E ICI ICI F 40 F 40 F F E E 30 30 VIN = 5V VIN = 5V 20 V 20 IN = 7.2V VIN = 7.2V VIN = 9V VIN = 9V 10 VIN = 12V 10 VIN = 12V VIN = 15V VIN = 15V 0 0 0 100 200 300 400 500 600 700 800
010
0 100 200 300 400 500 600 700 800
013
LOAD CURRENT (mA)
13008-
LOAD CURRENT (mA)
13008- Figure 10. Channel 1 PWM Efficiency vs. Load Current, VOUT1 = 1.8 V Figure 13. Channel 1 PWM Efficiency vs. Load Current, VOUT1 = 2.5 V
100 100 90 90 80 80 70 70 %) %) ( 60 ( 60 NCY 50 NCY 50 E E ICI ICI F 40 F 40 F F E E 30 30 VIN = 5V 20 V 20 IN = 7.2V VIN = 7.2V VIN = 9V VIN = 9V 10 VIN = 12V 10 VIN = 12V VIN = 15V VIN = 15V 0
1
0
1
0 100 200 300 400 500 600 700 800
0
0 100 200 300 400 500 600 700 800
014
LOAD CURRENT (mA)
13008-
LOAD CURRENT (mA)
13008- Figure 11. Channel 1 PWM Efficiency vs. Load Current, VOUT1 = 3.3 V Figure 14. Channel 1 PWM Efficiency vs. Load Current, VOUT1 = 5 V
80 85 75 80 70 75 65 70 60 65 60 55 %) %) ( ( 55 50 50 NCY 45 NCY E E 45 ICI 40 ICI F F 40 F 35 F E E 35 30 30 V 25 IN = 5V V 25 V IN = 5V IN = 7.2V 20 V V IN = 7.2V 20 IN = 9V V 15 VIN = 9V IN = 12V 15 V V IN = 12V IN = 15V 10 10 0.001 0.01 0.1 1 10 100
012
0.001 0.01 0.1 1 10 100
015
LOAD CURRENT (mA)
13008-
LOAD CURRENT (mA)
13008- Figure 12. Channel 2 Hysteresis Efficiency vs. Load Current, VOUT2 = 1.2 V Figure 15. Channel 2 Hysteresis Efficiency vs. Load Current, VOUT2 = 1.8 V Rev. A | Page 10 of 28 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS BUCK REGULATORS AND LOAD SWITCH SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BUCK REGULATOR OPERATION MODES PWM Mode PSM Mode Hysteresis Mode Mode Selection ADJUSTABLE AND FIXED OUTPUT VOLTAGES UNDERVOLTAGE LOCKOUT (UVLO) ENABLE AND SHUTDOWN FEATURES INTERNAL LINEAR REGULATOR (VREG) OSCILLATOR AND SYNCHRONIZATION CURRENT LIMIT SHORT-CIRCUIT PROTECTION SOFT START STARTUP WITH PRECHARGED OUTPUT 100% DUTY OPERATION ACTIVE DISCHARGE POWER-GOOD FUNCTION LOAD SWITCH THERMAL SHUTDOWN APPLICATIONS INFORMATION EXTERNAL COMPONENT SELECTION SELECTING THE INDUCTOR OUTPUT CAPACITOR INPUT CAPACITOR ADJUSTABLE OUTPUT VOLTAGE PROGRAMMING EFFICIENCY Power Switch Conduction Losses Inductor Losses Driver Losses Transition Losses RECOMMENDED BUCK EXTERNAL COMPONENTS CAPACITOR SELECTION Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE