Datasheet ADP2105, ADP2106, ADP2107 (Analog Devices) - 9

Data Sheet ADP2105/ADP2106/ADP2107 TYPICAL PERFORMANCE CHARACTERISTICS 100 100 95 95 VIN = 2.7V VIN = 3.6V 90 VIN = 3.6V V 90 ) IN = 2.7V ) % 85 % ( ( Y 85 C NCY N VIN = 4.2V E 80 IE ICI V F VIN = 4.2V 80 IN = 5.5V F FFIC E 75 E VIN = 5.5V 75 70 70
4
65 INDUCTOR: SD14, 2.5µH
6
INDUCTOR: SD3814, 3.3µH
08
DCR: 60mΩ
08
DCR: 93mΩ
9-
T
79- 07
A = 25°C TA = 25°C
06
60
060
65 1 10 100 1000 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA)
Figure 5. Efficiency—ADP2105 (1.2 V Output) Figure 8. Efficiency—ADP2105 (1.8 V Output)
100 100 VIN = 3.6V 95 95 90 V V IN = 2.7V IN = 3.6V 90 VIN = 4.2V VIN = 5.5V 85 ) ) % 85 % ( ( 80 Y Y C C VIN = 4.2V N 80 N 75 IE IE 70 FFIC FFIC E 75 E VIN = 5.5V 65 70 60 65 INDUCTOR: CDRH5D18, 4.1μH
8
INDUCTOR: D62LCB, 2µH 55
085
DCR: 43mΩ
00
DCR: 28mΩ
9-
T
79-
T A = 25°C A = 25°C
607 0
60 50
060
1 10 100 1000 1 10 100 1k 10k LOAD CURRENT (mA) LOAD CURRENT (mA)
Figure 6. Efficiency—ADP2105 (3.3 V Output) Figure 9. Efficiency—ADP2106 (1.2 V Output)
100 100 VIN = 3.6V 95 95 90 90 VIN = 2.7V 85 85 ) ) V % % IN = 5.5V ( V 80 IN = 4.2V ( 80 Y Y C C VIN = 4.2V N 75 N 75 IE V IE IN = 5.5V FFIC 70 FFIC 70 E E 65 65 60 60 VIN = 3.6V INDUCTOR: D62LCB, 2µH INDUCTOR: D62LCB, 3.3µH 55
062
DCR: 28mΩ 55
053
DCR: 47mΩ
9- 9-
TA = 25°C TA = 25°C
607
50
607 0
50
0
1 10 100 1k 10k 1 10 100 1k 10k LOAD CURRENT (mA) LOAD CURRENT (mA)
Figure 7. Efficiency—ADP2106 (1.8 V Output) Figure 10. Efficiency—ADP2106 (3.3 V Output) Rev. E | Page 9 of 36 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL OPERATING CIRCUIT REVISION HISTORY FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE BOUNDARY CONDITION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME PWM MODE OPERATION PFM MODE OPERATION PULSE-SKIPPING THRESHOLD 100% DUTY CYCLE OPERATION (LDO MODE) DESIGN FEATURES Enable/Shutdown Synchronous Rectification Current Limit Short-Circuit Protection Undervoltage Lockout (UVLO) Thermal Protection Soft Start APPLICATIONS INFORMATION ADIsimPower DESIGN TOOL EXTERNAL COMPONENT SELECTION SETTING THE OUTPUT VOLTAGE INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION INPUT CAPACITOR SELECTION INPUT FILTER SOFT START PERIOD LOOP COMPENSATION BODE PLOTS LOAD TRANSIENT RESPONSE EFFICIENCY CONSIDERATIONS Power Switch Conduction Losses Inductor Losses Switching Losses Transition Losses THERMAL CONSIDERATIONS DESIGN EXAMPLE EXTERNAL COMPONENT RECOMMENDATIONS CIRCUIT BOARD LAYOUT RECOMMENDATIONS EVALUATION BOARD EVALUATION BOARD SCHEMATIC FOR ADP2107 (1.8 V) RECOMMENDED PCB LAYOUT (EVALUATION BOARD LAYOUT) APPLICATION CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE