Datasheet LTC3834-1 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 30μA IQ Synchronous Step-Down Controller |
| Pages / Page | 28 / 5 — TYPICAL PERFOR A CE CHARACTERISTICS TA = 25ºC, unless otherwise noted. … |
| File Format / Size | PDF / 300 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS TA = 25ºC, unless otherwise noted. Total Input Supply Current vs Input Voltage
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LTC3834-1
W U TYPICAL PERFOR A CE CHARACTERISTICS TA = 25ºC, unless otherwise noted. Total Input Supply Current vs Input Voltage INTVCC Voltages vs Temperature INTVCC Line Regulation
350 6.0 5.5 FIGURE 10 CIRCUIT 5.8 300 5.6 5.4 250 μA) 5.4 INTVCC 5.2 5.3 200 5.0 VOLTAGE (V) VOLTAGE (V) 150 CC 4.8 CC 300 5.2 μA LOAD 4.6 INTV INTV 100 SUPPLY CURRENT ( 4.4 5.1 50 NO LOAD 4.2 0 4.0 5.0 5 10 15 20 25 30 35 –45 –25 –5 15 35 55 75 95 0 5 10 15 20 25 30 35 40 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 38341 G10 38341 G11 38341 G12
Maximum Current Sense Voltage SENSE Pins Total Input Bias Maximum Current Sense vs ITH Voltage Cycle Current Threshold vs Duty
100 60 120 FORCED CONTINUOUS 30 Burst Mode OPERATION 80 (RISING) 0 100 Burst Mode OPERATION –30 μA) 6O (FALLING) PULSE SKIPPING –60 80 40 –90 –120 60 20 –150 –180 40 0 –210 INPUT BIAS CURRENT ( –20 –240 20 CURRENT SENSE THRESHOLD (mV) –270 10% DUTY CYCLE MAXIMUM CURRENT SENSE VOLTAGE (mV) –40 –300 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 1 2 3 4 5 6 7 8 9 10 0 10 20 30 40 50 60 70 80 90 100 ITH PIN VOLTAGE (V) VSENSE COMMON MODE VOLTAGE (V) DUTY CYCLE (%) 38341 G13 38341 G14 38341 G15
Foldback Current Limit Quiescent Current vs Temperature
120 40 38 100 36 μA) 80 34 32 60 30 40 28 QUIESCENT CURRENT ( 26 20 24 MAXIMUM CURRENT SENSE VOLTAGE (mV) 0 22 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 –45 –30 –15 0 15 30 45 60 75 90 FEEDBACK VOLTAGE (V) TEMPERATURE (°C) 38341 G16 38341zz G17 38341f 5
W U TYPICAL PERFOR A CE CHARACTERISTICS TA = 25ºC, unless otherwise noted. Total Input Supply Current vs Input Voltage INTVCC Voltages vs Temperature INTVCC Line Regulation
350 6.0 5.5 FIGURE 10 CIRCUIT 5.8 300 5.6 5.4 250 μA) 5.4 INTVCC 5.2 5.3 200 5.0 VOLTAGE (V) VOLTAGE (V) 150 CC 4.8 CC 300 5.2 μA LOAD 4.6 INTV INTV 100 SUPPLY CURRENT ( 4.4 5.1 50 NO LOAD 4.2 0 4.0 5.0 5 10 15 20 25 30 35 –45 –25 –5 15 35 55 75 95 0 5 10 15 20 25 30 35 40 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 38341 G10 38341 G11 38341 G12
Maximum Current Sense Voltage SENSE Pins Total Input Bias Maximum Current Sense vs ITH Voltage Cycle Current Threshold vs Duty
100 60 120 FORCED CONTINUOUS 30 Burst Mode OPERATION 80 (RISING) 0 100 Burst Mode OPERATION –30 μA) 6O (FALLING) PULSE SKIPPING –60 80 40 –90 –120 60 20 –150 –180 40 0 –210 INPUT BIAS CURRENT ( –20 –240 20 CURRENT SENSE THRESHOLD (mV) –270 10% DUTY CYCLE MAXIMUM CURRENT SENSE VOLTAGE (mV) –40 –300 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 1 2 3 4 5 6 7 8 9 10 0 10 20 30 40 50 60 70 80 90 100 ITH PIN VOLTAGE (V) VSENSE COMMON MODE VOLTAGE (V) DUTY CYCLE (%) 38341 G13 38341 G14 38341 G15
Foldback Current Limit Quiescent Current vs Temperature
120 40 38 100 36 μA) 80 34 32 60 30 40 28 QUIESCENT CURRENT ( 26 20 24 MAXIMUM CURRENT SENSE VOLTAGE (mV) 0 22 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 –45 –30 –15 0 15 30 45 60 75 90 FEEDBACK VOLTAGE (V) TEMPERATURE (°C) 38341 G16 38341zz G17 38341f 5
