Datasheet ADP2105, ADP2106, ADP2107 (Analog Devices) - 10
| Hersteller | Analog Devices |
| Beschreibung | 2 Amp Synchronous, Step-Down DC-to-DC Converter |
| Seiten / Seite | 36 / 10 — ADP2105/ADP2106/ADP2107. Data Sheet. 100. VIN = 3.6V. VIN = 2.7V. IN = … |
| Revision | E |
| Dateiformat / Größe | PDF / 1.0 Mb |
| Dokumentensprache | Englisch |
ADP2105/ADP2106/ADP2107. Data Sheet. 100. VIN = 3.6V. VIN = 2.7V. IN = 4.2V. VIN = 5.5V. NCY. VIN = 4.2V. ICI. INDUCTOR: SD12, 1.2µH
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ADP2105/ADP2106/ADP2107 Data Sheet 100 100 VIN = 3.6V 95 95 VIN = 2.7V 90 VIN = 2.7V 90 85 VIN = 3.6V 85 V %) %) IN = 4.2V ( 80 ( 80 VIN = 5.5V NCY NCY E 75 VIN = 4.2V E 75 ICI ICI F F F 70 F 70 E VIN = 5.5V E 65 65 60 60 INDUCTOR: SD12, 1.2µH INDUCTOR: D62LCB, 1.5µH 55
010
DCR: 37mΩ 55
063
DCR: 21mΩ TA = 25°C TA = 25°C 50
06079-
50
06079-
1 10 100 1k 10k 1 10 100 1k 10k LOAD CURRENT (mA) LOAD CURRENT (mA)
Figure 11. Efficiency—ADP2107 (1.2 V) Figure 14. Efficiency—ADP2107 (1.8 V)
100 1.23 2.7V, –40°C 2.7V, +25°C 2.7V, +125°C 3.6V, –40°C 3.6V, +25°C 3.6V, +125°C 95 5.5V, –40°C 5.5V, +25°C 5.5V, +125°C 1.22 90 ) 85 V V ( 1.21 IN = 5.5V %) ( 80 GE VIN = 4.2V NCY E 75 OLTA 1.20 ICI T V F U F 70 E TP 1.19 65 OU VIN = 3.6V 60 1.18 INDUCTOR: CDRH5D28, 2.5µH 55
054
DCR: 13mΩ
082
TA = 25°C 50
06079-
1.17
06079-
1 10 100 1k 10k 0.01 0.1 1 10 100 1k 10k LOAD CURRENT (mA) LOAD CURRENT (mA)
Figure 12. Efficiency—ADP2107 (3.3 V) Figure 15. Output Voltage Accuracy—ADP2107 (1.2 V)
1.85 3.38 3.6V, –40°C 3.6V, +25°C 3.6V, +125°C 5.5V, –40°C 5.5V, +25°C 5.5V, +125°C 3.36 1.83 3.34 ) ) V V ( ( GE 3.32 1.81 GE OLTA OLTA 3.30 T V T V U 1.79 U 3.28 TP TP OU OU 3.26 1.77 2.7V, –40°C 2.7V, +25°C 2.7V, +125°C 3.24 3.6V, –40°C 3.6V, +25°C 3.6V, +125°C
064 081
5.5V, –40°C 5.5V, +25°C 5.5V, +125°C 1.75
06079-
3.22
06079-
0.1 1 10 100 1k 10k 0.01 0.1 1 10 100 1k 10k LOAD CURRENT (mA) LOAD CURRENT (mA)
Figure 13. Output Voltage Accuracy—ADP2107 (1.8 V) Figure 16. Output Voltage Accuracy—ADP2107 (3.3 V) Rev. E | Page 10 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
010
DCR: 37mΩ 55
063
DCR: 21mΩ TA = 25°C TA = 25°C 50
06079-
50
06079-
1 10 100 1k 10k 1 10 100 1k 10k LOAD CURRENT (mA) LOAD CURRENT (mA)
Figure 11. Efficiency—ADP2107 (1.2 V) Figure 14. Efficiency—ADP2107 (1.8 V)
100 1.23 2.7V, –40°C 2.7V, +25°C 2.7V, +125°C 3.6V, –40°C 3.6V, +25°C 3.6V, +125°C 95 5.5V, –40°C 5.5V, +25°C 5.5V, +125°C 1.22 90 ) 85 V V ( 1.21 IN = 5.5V %) ( 80 GE VIN = 4.2V NCY E 75 OLTA 1.20 ICI T V F U F 70 E TP 1.19 65 OU VIN = 3.6V 60 1.18 INDUCTOR: CDRH5D28, 2.5µH 55
054
DCR: 13mΩ
082
TA = 25°C 50
06079-
1.17
06079-
1 10 100 1k 10k 0.01 0.1 1 10 100 1k 10k LOAD CURRENT (mA) LOAD CURRENT (mA)
Figure 12. Efficiency—ADP2107 (3.3 V) Figure 15. Output Voltage Accuracy—ADP2107 (1.2 V)
1.85 3.38 3.6V, –40°C 3.6V, +25°C 3.6V, +125°C 5.5V, –40°C 5.5V, +25°C 5.5V, +125°C 3.36 1.83 3.34 ) ) V V ( ( GE 3.32 1.81 GE OLTA OLTA 3.30 T V T V U 1.79 U 3.28 TP TP OU OU 3.26 1.77 2.7V, –40°C 2.7V, +25°C 2.7V, +125°C 3.24 3.6V, –40°C 3.6V, +25°C 3.6V, +125°C
064 081
5.5V, –40°C 5.5V, +25°C 5.5V, +125°C 1.75
06079-
3.22
06079-
0.1 1 10 100 1k 10k 0.01 0.1 1 10 100 1k 10k LOAD CURRENT (mA) LOAD CURRENT (mA)
Figure 13. Output Voltage Accuracy—ADP2107 (1.8 V) Figure 16. Output Voltage Accuracy—ADP2107 (3.3 V) Rev. E | Page 10 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