Datasheet LTC3826 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 30µA IQ, Dual, 2-Phase Synchronous Step-Down Controller |
| Pages / Page | 36 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Total Input Supply Current. EXTVCC … |
| File Format / Size | PDF / 485 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Total Input Supply Current. EXTVCC Switchover and INTVCC. vs Input Voltage
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LTC3826
TYPICAL PERFORMANCE CHARACTERISTICS Total Input Supply Current EXTVCC Switchover and INTVCC vs Input Voltage Voltages vs Temperature INTVCC Line Regulation
350 6.0 5.5 5.8 300 5.6 5.4 250 5.4 INTVCC 5.2 5.3 200 VOLTAGE (V) CC 5.0 150 EXTV VOLTAGE (V) Y CURRENT (μA) CC RISING 300μA LOAD 4.8 CC 5.2 AND INTV 100 4.6 SUPPL INTV CC EXTVCC FALLING 4.4 5.1 50 NO LOAD EXTV 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) 3826 G10 3826 G11 3826 G12
Maximum Current Sense Voltage Sense Pins Total Input Maximum Current Sense vs ITH Voltage Bias Current Threshold vs Duty Cycle
100 60 120 PULSE SKIPPING FORCED CONTINUOUS 30 80 Burst Mode OPERATION 0 100 (RISING) –30 60 Burst Mode OPERATION (FALLING) –60 80 40 –90 –120 60 20 –150 –180 40 0 INPUT BIAS CURRENT (μA) –210 –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 (%) 3826 G13 3826 G14 3826 G15
SENSE Pins Total Input Foldback Current Limit Quiescent Current vs Temperature Bias Current vs ITH
120 44 4 TRACK/SS = 1V PLLIN/MODE = 0V VSENSE = 3.3V 42 100 40 3 38 80 36 60 34 2 32 40 30 INPUT CURRENT (μA) QUIESCENT CURRENT (μA) 1 28 20 26 MAXIMUM CURRENT SENSE VOLTAGE (mV) 0 24 0 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 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 FEEDBACK VOLTAGE (V) TEMPERATURE (°C) ITH VOLTAGE (V) 3826 G16 3826 G17 3826 G18 3826fc 6
TYPICAL PERFORMANCE CHARACTERISTICS Total Input Supply Current EXTVCC Switchover and INTVCC vs Input Voltage Voltages vs Temperature INTVCC Line Regulation
350 6.0 5.5 5.8 300 5.6 5.4 250 5.4 INTVCC 5.2 5.3 200 VOLTAGE (V) CC 5.0 150 EXTV VOLTAGE (V) Y CURRENT (μA) CC RISING 300μA LOAD 4.8 CC 5.2 AND INTV 100 4.6 SUPPL INTV CC EXTVCC FALLING 4.4 5.1 50 NO LOAD EXTV 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) 3826 G10 3826 G11 3826 G12
Maximum Current Sense Voltage Sense Pins Total Input Maximum Current Sense vs ITH Voltage Bias Current Threshold vs Duty Cycle
100 60 120 PULSE SKIPPING FORCED CONTINUOUS 30 80 Burst Mode OPERATION 0 100 (RISING) –30 60 Burst Mode OPERATION (FALLING) –60 80 40 –90 –120 60 20 –150 –180 40 0 INPUT BIAS CURRENT (μA) –210 –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 (%) 3826 G13 3826 G14 3826 G15
SENSE Pins Total Input Foldback Current Limit Quiescent Current vs Temperature Bias Current vs ITH
120 44 4 TRACK/SS = 1V PLLIN/MODE = 0V VSENSE = 3.3V 42 100 40 3 38 80 36 60 34 2 32 40 30 INPUT CURRENT (μA) QUIESCENT CURRENT (μA) 1 28 20 26 MAXIMUM CURRENT SENSE VOLTAGE (mV) 0 24 0 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 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 FEEDBACK VOLTAGE (V) TEMPERATURE (°C) ITH VOLTAGE (V) 3826 G16 3826 G17 3826 G18 3826fc 6
