Datasheet ADP2102 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | Low Duty Cycle, 600 mA, 3 MHz Synchronous Step-Down DC-to-DC Converter |
| 页数 / 页 | 24 / 6 — ADP2102. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 100. 1.22. TA = … |
| 修订版 | C |
| 文件格式/大小 | PDF / 747 Kb |
| 文件语言 | 英语 |
ADP2102. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 100. 1.22. TA = 25°C. VIN = 2.7V. 1.21. ) V (. %) 85. IN = 2.7V. NCY 80. OLTA 1.20
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ADP2102 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6 V, L = 2.2 µH, CIN = 2.2 µF, COUT = 4.7 µF, unless otherwise noted.
100 1.22 TA = 25°C TA = 25°C 95 VIN = 2.7V 90 1.21 ) V ( V %) 85 IN = 2.7V ( GE NCY 80 E V OLTA 1.20 IN = 3.6V VIN = 4.5V ICI T V F U F 75 E TP VIN = 3.6V OU 70 1.19 MODE = PSM VIN = 4.5V L = 2.2µH 65 CIN = 2.2µF COUT = 10µF 60 1.18 1 10 100 1000
004 007
0 100 200 300 400 500 600 LOAD CURRENT (mA) LOAD CURRENT (mA)
06631- 06631- Figure 4. Efficiency vs. Load Current (VOUT = 1.2 V) Figure 7. Output Voltage Accuracy (VOUT = 1.2 V)
100 1.52 TA = 25°C TA = 25°C 95 VIN = 2.7V 90 1.51 ) V V IN = 3.6V ( %) 85 ( GE VIN = 2.7V V NCY IN = 4.5V 80 V E OLTA 1.50 IN = 3.6V ICI T V F U F 75 E TP OU 70 1.49 MODE = PSM V L = 2.2µH IN = 4.5V 65 CIN = 2.2µF COUT = 10µF 60 1.48 1 10 100 1000
005 020
0 100 200 300 400 500 600 LOAD CURRENT (mA) LOAD CURRENT (mA)
06631- 06631- Figure 5. Efficiency vs. Load Current (VOUT = 1.5 V) Figure 8. Output Voltage Accuracy (VOUT = 1.5 V)
100 1.82 TA = 25°C TA = 25°C 95 90 1.81 V ) IN = 2.7V V ( VIN = 2.7V %) 85 ( GE VIN = 4.5V NCY 80 E OLTA 1.80 ICI T V F VIN = 3.6V U F 75 E TP OU VIN = 3.6V 70 1.79 MODE = PSM L = 2.2µH VIN = 4.5V 65 CIN = 2.2µF COUT = 10µF 60 1.78 1 10 100 1000
006 009
0 100 200 300 400 500 600 LOAD CURRENT (mA) LOAD CURRENT (mA)
06631- 06631- Figure 6. Efficiency vs. Load Current (VOUT = 1.8 V) Figure 9. Output Voltage Accuracy (VOUT = 1.8 V) Rev. C | Page 6 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE BOUNDARY CONDITION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME CONSTANT ON-TIME TIMER FORCED CONTINUOUS CONDUCTION MODE POWER SAVE MODE SYNCHRONOUS RECTIFICATION CURRENT LIMIT SOFT START ENABLE UNDERVOLTAGE LOCKOUT THERMAL SHUTDOWN APPLICATIONS INFORMATION INDUCTOR SELECTION INPUT CAPACITOR SELECTION OUTPUT CAPACITOR SELECTION TYPICAL APPLICATION CIRCUITS SETTING THE OUTPUT VOLTAGE EFFICIENCY CONSIDERATIONS Power Switch Conduction Losses Inductor Losses Switching Losses Transition Losses THERMAL CONSIDERATIONS DESIGN EXAMPLE Inductor Output Capacitor Input Capacitor Losses CIRCUIT BOARD LAYOUT RECOMMENDATIONS RECOMMENDED LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE
VIN = 3.6 V, L = 2.2 µH, CIN = 2.2 µF, COUT = 4.7 µF, unless otherwise noted.
100 1.22 TA = 25°C TA = 25°C 95 VIN = 2.7V 90 1.21 ) V ( V %) 85 IN = 2.7V ( GE NCY 80 E V OLTA 1.20 IN = 3.6V VIN = 4.5V ICI T V F U F 75 E TP VIN = 3.6V OU 70 1.19 MODE = PSM VIN = 4.5V L = 2.2µH 65 CIN = 2.2µF COUT = 10µF 60 1.18 1 10 100 1000
004 007
0 100 200 300 400 500 600 LOAD CURRENT (mA) LOAD CURRENT (mA)
06631- 06631- Figure 4. Efficiency vs. Load Current (VOUT = 1.2 V) Figure 7. Output Voltage Accuracy (VOUT = 1.2 V)
100 1.52 TA = 25°C TA = 25°C 95 VIN = 2.7V 90 1.51 ) V V IN = 3.6V ( %) 85 ( GE VIN = 2.7V V NCY IN = 4.5V 80 V E OLTA 1.50 IN = 3.6V ICI T V F U F 75 E TP OU 70 1.49 MODE = PSM V L = 2.2µH IN = 4.5V 65 CIN = 2.2µF COUT = 10µF 60 1.48 1 10 100 1000
005 020
0 100 200 300 400 500 600 LOAD CURRENT (mA) LOAD CURRENT (mA)
06631- 06631- Figure 5. Efficiency vs. Load Current (VOUT = 1.5 V) Figure 8. Output Voltage Accuracy (VOUT = 1.5 V)
100 1.82 TA = 25°C TA = 25°C 95 90 1.81 V ) IN = 2.7V V ( VIN = 2.7V %) 85 ( GE VIN = 4.5V NCY 80 E OLTA 1.80 ICI T V F VIN = 3.6V U F 75 E TP OU VIN = 3.6V 70 1.79 MODE = PSM L = 2.2µH VIN = 4.5V 65 CIN = 2.2µF COUT = 10µF 60 1.78 1 10 100 1000
006 009
0 100 200 300 400 500 600 LOAD CURRENT (mA) LOAD CURRENT (mA)
06631- 06631- Figure 6. Efficiency vs. Load Current (VOUT = 1.8 V) Figure 9. Output Voltage Accuracy (VOUT = 1.8 V) Rev. C | Page 6 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE BOUNDARY CONDITION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME CONSTANT ON-TIME TIMER FORCED CONTINUOUS CONDUCTION MODE POWER SAVE MODE SYNCHRONOUS RECTIFICATION CURRENT LIMIT SOFT START ENABLE UNDERVOLTAGE LOCKOUT THERMAL SHUTDOWN APPLICATIONS INFORMATION INDUCTOR SELECTION INPUT CAPACITOR SELECTION OUTPUT CAPACITOR SELECTION TYPICAL APPLICATION CIRCUITS SETTING THE OUTPUT VOLTAGE EFFICIENCY CONSIDERATIONS Power Switch Conduction Losses Inductor Losses Switching Losses Transition Losses THERMAL CONSIDERATIONS DESIGN EXAMPLE Inductor Output Capacitor Input Capacitor Losses CIRCUIT BOARD LAYOUT RECOMMENDATIONS RECOMMENDED LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE