Datasheet LTC3835 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | Low IQ Synchronous Step-Down Controller |
| Pages / Page | 30 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25ºC, unless otherwise noted. … |
| Revision | F |
| File Format / Size | PDF / 818 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25ºC, unless otherwise noted. Total Input Supply Current
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LTC3835
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25ºC, unless otherwise noted. Total Input Supply Current EXTVCC Switchover and INTVCC vs Input Voltage Voltages vs Temperature INTVCC Line Regulation
350 6.0 5.50 5.8 5.45 300 5.6 5.40 250 5.4 5.35 300µA LOAD INTVCC 200 VOLTAGES (V) 5.2 5.30 CC 5.0 5.25 150 Y CURRENT (µA) VOLTAGE (V) 4.8 EXTVCC RISING CC 5.20 100 SUPPL NO LOAD AND INTV 4.6 INTV 5.15 CC 4.4 EXTVCC FALLING 5.10 50 EXTV 4.2 5.05 0 4.0 5.00 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) 3835 G10 3835 G11 3835 G12
Maximum Current Sense Voltage Sense Pins Total Input Maximum Current Sense vs ITH Voltage Bias Current Threshold vs Duty Cycle
100 200 120 PULSE SKIPPING FORCED CONTINUOUS 100 80 BURST MODE (RISING) 100 BURST MODE (FALLING) 0 60 –100 80 40 –200 60 20 –300 –400 40 0 INPUT CURRENT (µA) –500 –20 20 CURRENT SENSE THRESHOLD (mV) –600 CURRENT SENSE THRESHOLD (mV) 10% Duty Cycle –40 –700 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 (%) 3835 G13 3835 G14 3835 G15
Quiescent Current SENSE Pins Total Input Foldback Current Limit vs Temperature Bias Current vs ITH
120 100 12 TRACK/SS = 1V PLLIN/MODE = 0V VSENSE = 3.3V 100 95 10 90 80 8 85 60 80 6 75 40 4 INPUT CURRENT (µA) QUIESCENT CURRENT (µA) 70 20 2 65 MAXIMUM CURRENT SENSE VOLTAGE (V) 0 60 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) 3835 G16 3835 G17 3835 G18 Rev. F 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25ºC, unless otherwise noted. Total Input Supply Current EXTVCC Switchover and INTVCC vs Input Voltage Voltages vs Temperature INTVCC Line Regulation
350 6.0 5.50 5.8 5.45 300 5.6 5.40 250 5.4 5.35 300µA LOAD INTVCC 200 VOLTAGES (V) 5.2 5.30 CC 5.0 5.25 150 Y CURRENT (µA) VOLTAGE (V) 4.8 EXTVCC RISING CC 5.20 100 SUPPL NO LOAD AND INTV 4.6 INTV 5.15 CC 4.4 EXTVCC FALLING 5.10 50 EXTV 4.2 5.05 0 4.0 5.00 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) 3835 G10 3835 G11 3835 G12
Maximum Current Sense Voltage Sense Pins Total Input Maximum Current Sense vs ITH Voltage Bias Current Threshold vs Duty Cycle
100 200 120 PULSE SKIPPING FORCED CONTINUOUS 100 80 BURST MODE (RISING) 100 BURST MODE (FALLING) 0 60 –100 80 40 –200 60 20 –300 –400 40 0 INPUT CURRENT (µA) –500 –20 20 CURRENT SENSE THRESHOLD (mV) –600 CURRENT SENSE THRESHOLD (mV) 10% Duty Cycle –40 –700 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 (%) 3835 G13 3835 G14 3835 G15
Quiescent Current SENSE Pins Total Input Foldback Current Limit vs Temperature Bias Current vs ITH
120 100 12 TRACK/SS = 1V PLLIN/MODE = 0V VSENSE = 3.3V 100 95 10 90 80 8 85 60 80 6 75 40 4 INPUT CURRENT (µA) QUIESCENT CURRENT (µA) 70 20 2 65 MAXIMUM CURRENT SENSE VOLTAGE (V) 0 60 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) 3835 G16 3835 G17 3835 G18 Rev. F 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
