Datasheet LTC3707 (Analog Devices) - 5
| Hersteller | Analog Devices |
| Beschreibung | High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator |
| Seiten / Seite | 32 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. Supply Current vs Input Voltage. … |
| Dateiformat / Größe | PDF / 398 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. Supply Current vs Input Voltage. INTVCC and EXTVCC Switch. and Mode (Figure 13)
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LTC3707
TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Input Voltage INTVCC and EXTVCC Switch and Mode (Figure 13) EXTVCC Voltage Drop Voltage vs Temperature
1000 200 5.05 INTVCC VOLTAGE 5.00 800 150 4.95 600 4.90 BOTH 100 SWITCH VOLTAGE (V) CONTROLLERS ON TAGE DROP (mV) CC Y CURRENT (μA) 4.85 400 VOL CC SUPPL V 4.80 50 200 EXT AND EXTV EXTVCC SWITCHOVER THRESHOLD STANDBY CC 4.75 SHUTDOWN INTV 0 0 4.70 0 5 10 15 20 25 30 0 10 20 30 40 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) CURRENT (mA) TEMPERATURE (°C) 3707 G04 3707 G05 3707 G06
Maximum Current Sense Maximum Current Sense Threshold vs Percent of Nominal Internal 5V LDO Line Reg Threshold vs Duty Factor Output Voltage (Foldback)
5.1 75 80 ILOAD = 1mA 5.0 70 60 4.9 50 50 4.8 (mV) (mV) 40 VOLTAGE (V) 4.7 CC SENSE SENSE V V 30 25 INTV 4.6 20 4.5 10 4.4 0 0 0 5 10 15 20 25 30 0 20 40 60 80 100 0 25 50 75 100 INPUT VOLTAGE (V) DUTY FACTOR (%) PERCENT ON NOMINAL OUTPUT VOLTAGE (%) 3707 G07 3707 G08 3707 G09
Maximum Current Sense Maximum Current Sense Threshold Current Sense Threshold Threshold vs VRUN/SS (Soft-Start) vs Sense Common Mode Voltage vs ITH Voltage
80 80 90 VSENSE(CM) = 1.6V 80 70 76 60 60 50 72 40 (mV) (mV) (mV) 40 30 SENSE SENSE 20 V V 68 SENSEV 10 20 0 64 –10 –20 0 60 –30 0 1 2 3 4 5 6 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 VRUN/SS (V) COMMON MODE VOLTAGE (V) VITH (V) 3707 G10 3707 G11 3707 G12 3707fb 5
TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Input Voltage INTVCC and EXTVCC Switch and Mode (Figure 13) EXTVCC Voltage Drop Voltage vs Temperature
1000 200 5.05 INTVCC VOLTAGE 5.00 800 150 4.95 600 4.90 BOTH 100 SWITCH VOLTAGE (V) CONTROLLERS ON TAGE DROP (mV) CC Y CURRENT (μA) 4.85 400 VOL CC SUPPL V 4.80 50 200 EXT AND EXTV EXTVCC SWITCHOVER THRESHOLD STANDBY CC 4.75 SHUTDOWN INTV 0 0 4.70 0 5 10 15 20 25 30 0 10 20 30 40 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) CURRENT (mA) TEMPERATURE (°C) 3707 G04 3707 G05 3707 G06
Maximum Current Sense Maximum Current Sense Threshold vs Percent of Nominal Internal 5V LDO Line Reg Threshold vs Duty Factor Output Voltage (Foldback)
5.1 75 80 ILOAD = 1mA 5.0 70 60 4.9 50 50 4.8 (mV) (mV) 40 VOLTAGE (V) 4.7 CC SENSE SENSE V V 30 25 INTV 4.6 20 4.5 10 4.4 0 0 0 5 10 15 20 25 30 0 20 40 60 80 100 0 25 50 75 100 INPUT VOLTAGE (V) DUTY FACTOR (%) PERCENT ON NOMINAL OUTPUT VOLTAGE (%) 3707 G07 3707 G08 3707 G09
Maximum Current Sense Maximum Current Sense Threshold Current Sense Threshold Threshold vs VRUN/SS (Soft-Start) vs Sense Common Mode Voltage vs ITH Voltage
80 80 90 VSENSE(CM) = 1.6V 80 70 76 60 60 50 72 40 (mV) (mV) (mV) 40 30 SENSE SENSE 20 V V 68 SENSEV 10 20 0 64 –10 –20 0 60 –30 0 1 2 3 4 5 6 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 VRUN/SS (V) COMMON MODE VOLTAGE (V) VITH (V) 3707 G10 3707 G11 3707 G12 3707fb 5