Datasheet LTC3811 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | High Speed Dual, Multiphase Step-Down DC/DC Controller |
| Pages / Page | 48 / 9 — TYPICAL PERFORMANCE CHARACTERISTICS. Current Sense Threshold vs. Maximum … |
| File Format / Size | PDF / 552 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Current Sense Threshold vs. Maximum SENSE Pin Voltage vs. Maximum Current Sense
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LTC3811
TYPICAL PERFORMANCE CHARACTERISTICS Current Sense Threshold vs Maximum SENSE Pin Voltage vs Maximum Current Sense COMP Pin Voltage Temperature Threshold vs VRNG Voltage
100 100 90 RNG = 2V 80 90 80 80 RNG = 2V 60 RNG = INTV 70 CC TAGE (mV) 70 40 60 RNG = 0V 60 20 RNG = INTV 50 CC 50 0 40 40 –20 30 30 RNG = 0V –40 20 20 CURRENT SENSE THRESHOLD (mV) –60 MAXIMUM SENSE PIN VOL 10 10 –80 0 MAXIMUM CURRENT SENSE THRESHOLD (mV) 0 0 0.5 1 1.5 2 2.5 3 –50 –30 –10 10 30 50 70 90 110 130 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 COMP PIN VOLTAGE (V) TEMPERATURE (°C) VRNG VOLTAGE (V) 3811 G28 3811 G29 3811 G30
Maximum SENSE Pin Threshold SENSE Pin Current vs Foldback Current Limit vs Duty Cycle Common Mode Voltage
60 60 2.5 55 50 50 2.0 45 40 40 1.5 35 30 30 25 1.0 20 20 15 SENSE PIN CURRENT (μA) 10 RNG = INTV 0.5 CC 10 MAXIMUM SENSE THRESHOLD (mV) 5 MAXIMUM SENSE PIN THRESHOLD (mV) 0 0 0 0 100 200 300 400 500 600 700 0 10 20 30 40 50 60 70 80 90 100 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 FB VOLTAGE (mV) DUTY CYCLE (%) COMMON MODE VOLTAGE (V) 3811 G31 3811 G32 3811 G33
SENSE Pin Current vs Maximum SENSE Pin Threshold Frequency vs PLL/LPF Pin Temperature vs Common Mode Voltage Voltage
1.5 55 1200 1.4 54 1100 1.3 1000 1.2 53 1.1 900 52 1.0 800 0.9 51 700 RNG = INTV 0.8 CC 50 600 0.7 0.6 49 500 0.5 400 48 FREQUENCY (kHz) 0.4 SENSE PIN CURRENT (μA) 300 0.3 47 200 0.2 46 0.1 MAXIMUM SENSE PIN THRESHOLD (mV) 100 0 45 0 –50 –30 –10 10 30 50 70 90 110 130 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 TEMPERATURE (°C) COMMON MODE VOLTAGE (V) PLL/LPF PIN VOLTAGE (V) 3811 G34 3811 G35 3811 G36 3811f 9
TYPICAL PERFORMANCE CHARACTERISTICS Current Sense Threshold vs Maximum SENSE Pin Voltage vs Maximum Current Sense COMP Pin Voltage Temperature Threshold vs VRNG Voltage
100 100 90 RNG = 2V 80 90 80 80 RNG = 2V 60 RNG = INTV 70 CC TAGE (mV) 70 40 60 RNG = 0V 60 20 RNG = INTV 50 CC 50 0 40 40 –20 30 30 RNG = 0V –40 20 20 CURRENT SENSE THRESHOLD (mV) –60 MAXIMUM SENSE PIN VOL 10 10 –80 0 MAXIMUM CURRENT SENSE THRESHOLD (mV) 0 0 0.5 1 1.5 2 2.5 3 –50 –30 –10 10 30 50 70 90 110 130 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 COMP PIN VOLTAGE (V) TEMPERATURE (°C) VRNG VOLTAGE (V) 3811 G28 3811 G29 3811 G30
Maximum SENSE Pin Threshold SENSE Pin Current vs Foldback Current Limit vs Duty Cycle Common Mode Voltage
60 60 2.5 55 50 50 2.0 45 40 40 1.5 35 30 30 25 1.0 20 20 15 SENSE PIN CURRENT (μA) 10 RNG = INTV 0.5 CC 10 MAXIMUM SENSE THRESHOLD (mV) 5 MAXIMUM SENSE PIN THRESHOLD (mV) 0 0 0 0 100 200 300 400 500 600 700 0 10 20 30 40 50 60 70 80 90 100 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 FB VOLTAGE (mV) DUTY CYCLE (%) COMMON MODE VOLTAGE (V) 3811 G31 3811 G32 3811 G33
SENSE Pin Current vs Maximum SENSE Pin Threshold Frequency vs PLL/LPF Pin Temperature vs Common Mode Voltage Voltage
1.5 55 1200 1.4 54 1100 1.3 1000 1.2 53 1.1 900 52 1.0 800 0.9 51 700 RNG = INTV 0.8 CC 50 600 0.7 0.6 49 500 0.5 400 48 FREQUENCY (kHz) 0.4 SENSE PIN CURRENT (μA) 300 0.3 47 200 0.2 46 0.1 MAXIMUM SENSE PIN THRESHOLD (mV) 100 0 45 0 –50 –30 –10 10 30 50 70 90 110 130 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 TEMPERATURE (°C) COMMON MODE VOLTAGE (V) PLL/LPF PIN VOLTAGE (V) 3811 G34 3811 G35 3811 G36 3811f 9
