Datasheet LTC3728L-1 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Dual, 550kHz, 2-Phase Synchronous Regulator |
| Pages / Page | 32 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. Supply Current vs Input Voltage. … |
| File Format / Size | PDF / 487 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Supply Current vs Input Voltage. INTVCC and EXTVCC Switch. and Mode (Figure 13)
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LTC3728L-1
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 CCV SUPPL 4.80 50 200 EXT AND EXTV EXTVCC SWITCHOVER THRESHOLD 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) 3728L1 G04 3728L1 G05 3728L1 G06
Maximum Current Sense Threshold Maximum Current Sense Threshold vs Percent of Nominal Output Internal 5V LDO Line Regulation vs Duty Factor 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 (%) 3728L1 G07 3728L1 G08 3728L1 G09
Maximum Current Sense Threshold Maximum Current Sense Threshold Current Sense 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 SENSEV 68 V 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) 3728L1 G10 3728L1 G11 3728L1 G12 3728l1fc 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 CCV SUPPL 4.80 50 200 EXT AND EXTV EXTVCC SWITCHOVER THRESHOLD 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) 3728L1 G04 3728L1 G05 3728L1 G06
Maximum Current Sense Threshold Maximum Current Sense Threshold vs Percent of Nominal Output Internal 5V LDO Line Regulation vs Duty Factor 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 (%) 3728L1 G07 3728L1 G08 3728L1 G09
Maximum Current Sense Threshold Maximum Current Sense Threshold Current Sense 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 SENSEV 68 V 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) 3728L1 G10 3728L1 G11 3728L1 G12 3728l1fc 5
