Datasheet LTC3404 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator |
| Pages / Page | 16 / 4 — TYPICAL PERFOR A CE CHARACTERISTICS. Efficiency vs Input Voltage. … |
| File Format / Size | PDF / 215 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. Efficiency vs Input Voltage. Efficiency vs Output Current. Reference Voltage
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LTC3404
W U TYPICAL PERFOR A CE CHARACTERISTICS Efficiency vs Input Voltage Efficiency vs Output Current Efficiency vs Output Current
95 100 90 IOUT = 100mA 90 L = 4.7μH V 85 90 IOUT = 10mA IN = 3.6V 80 V L = 3.5μH IN = 4.2V 80 85 70 I I OUT = 300mA OUT = 1mA 75 60 80 VIN = 3.6V 50 70 75 VIN = 4.2V 40 65 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 70 I 30 OUT = 0.1mA 60 20 PULSE SKIPPING MODE 65 Burst Mode OPERATION Burst Mode OPERATION Burst Mode OPERATION V 55 OUT = 2.5V 10 V V OUT = 1.8V IN = 6V L = 4.7μH L = 4.7μH VOUT = 2.5V 60 0 50 2 3 4 5 6 7 8 0.1 1 10 100 1000 0.1 1 10 100 1000 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) 3404 G03 3404 G01 3404 G02
Reference Voltage Efficiency vs Output Current Efficiency vs Output Current vs Temperature
90 100 0.814 V V IN = 3.6V IN = 3V 95 85 VIN = 3.6V 0.809 90 80 0.804 VIN = 6V VIN = 3.6V 85 V 75 IN = 4.2V 0.799 VIN = 4.2V 80 EFFICIENCY (%) EFFICIENCY (%) 70 0.794 75 V REFERENCE VOLTAGE (V) IN = 6V 65 0.789 70 V V OUT = 3.1V OUT = 1.8V L = 4.7μH L = 4.7μH 60 65 0.784 0.1 1 10 100 1000 0.1 1 10 100 1000 –50 –25 0 25 50 75 100 125 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) TEMPERATURE (°C) 3404 G4a 3404 G04 3404 G05
Oscillator Frequency Oscillator Frequency vs Temperature vs Supply Voltage Output Voltage vs Load Current
1.55 1.55 1.83 VIN = 3.6V 1.82 1.50 1.50 1.81 1.45 1.45 1.80 1.40 1.40 1.79 1.78 FREQUENCY (MHz) 1.35 1.35 OUTPUT VOLTAGE (V) 1.77 1.30 OSCILLATOR FREQUENCY (MHz) 1.30 PULSE SKIPPING MODE 1.76 VIN = 3.6V L = 4.7μF 1.25 1.25 1.75 –50 –25 0 25 50 75 100 125 2 4 6 8 0 200 400 600 800 TEMPERATURE (°C) SUPPLY VOLTAGE (V) LOAD CURRENT (mA) 3404 G06 3404 G07 3404 G08 3404fb 4
W U TYPICAL PERFOR A CE CHARACTERISTICS Efficiency vs Input Voltage Efficiency vs Output Current Efficiency vs Output Current
95 100 90 IOUT = 100mA 90 L = 4.7μH V 85 90 IOUT = 10mA IN = 3.6V 80 V L = 3.5μH IN = 4.2V 80 85 70 I I OUT = 300mA OUT = 1mA 75 60 80 VIN = 3.6V 50 70 75 VIN = 4.2V 40 65 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 70 I 30 OUT = 0.1mA 60 20 PULSE SKIPPING MODE 65 Burst Mode OPERATION Burst Mode OPERATION Burst Mode OPERATION V 55 OUT = 2.5V 10 V V OUT = 1.8V IN = 6V L = 4.7μH L = 4.7μH VOUT = 2.5V 60 0 50 2 3 4 5 6 7 8 0.1 1 10 100 1000 0.1 1 10 100 1000 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) 3404 G03 3404 G01 3404 G02
Reference Voltage Efficiency vs Output Current Efficiency vs Output Current vs Temperature
90 100 0.814 V V IN = 3.6V IN = 3V 95 85 VIN = 3.6V 0.809 90 80 0.804 VIN = 6V VIN = 3.6V 85 V 75 IN = 4.2V 0.799 VIN = 4.2V 80 EFFICIENCY (%) EFFICIENCY (%) 70 0.794 75 V REFERENCE VOLTAGE (V) IN = 6V 65 0.789 70 V V OUT = 3.1V OUT = 1.8V L = 4.7μH L = 4.7μH 60 65 0.784 0.1 1 10 100 1000 0.1 1 10 100 1000 –50 –25 0 25 50 75 100 125 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) TEMPERATURE (°C) 3404 G4a 3404 G04 3404 G05
Oscillator Frequency Oscillator Frequency vs Temperature vs Supply Voltage Output Voltage vs Load Current
1.55 1.55 1.83 VIN = 3.6V 1.82 1.50 1.50 1.81 1.45 1.45 1.80 1.40 1.40 1.79 1.78 FREQUENCY (MHz) 1.35 1.35 OUTPUT VOLTAGE (V) 1.77 1.30 OSCILLATOR FREQUENCY (MHz) 1.30 PULSE SKIPPING MODE 1.76 VIN = 3.6V L = 4.7μF 1.25 1.25 1.75 –50 –25 0 25 50 75 100 125 2 4 6 8 0 200 400 600 800 TEMPERATURE (°C) SUPPLY VOLTAGE (V) LOAD CURRENT (mA) 3404 G06 3404 G07 3404 G08 3404fb 4
