Datasheet LTC3560 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 2.25MHz, 800mA Synchronous Step-Down Regulator in ThinSOT |
| Pages / Page | 16 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS (From Figure 1a Except for the … |
| File Format / Size | PDF / 267 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS (From Figure 1a Except for the Resistive Divider Resistor Values). Reference Voltage
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LTC3560
TYPICAL PERFORMANCE CHARACTERISTICS (From Figure 1a Except for the Resistive Divider Resistor Values) Reference Voltage Effi ciency vs Output Current Effi ciency vs Output Current vs Temperature
100 100 0.615 VOUT = 1.3V Burst Mode OPERATION VIN = 3.6V 90 90 0.610 80 80 70 70 0.605 60 60 TAGE (V) PULSE SKIP MODE 50 50 0.600 40 40 EFFICIENCY (%) EFFICIENCY (%) 0.595 30 30 REFERENCE VOL 20 V 20 IN = 2.7V 0.590 10 VIN = 3.6V 10 VIN = 4.2V VIN = 4.2V V V OUT = 1.8V IN = 3.6V 0 0 0.585 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) 3560 G04 3560 G05 3560 G06
Oscillator Frequency Oscillator Frequency vs Temperature vs Supply Voltage Output Voltage vs Load Current
2.50 2.4 1.84 VIN = 3.6V VIN = 3.6V 2.45 2.3 1.83 2.40 2.35 2.2 1.82 2.30 2.25 2.1 1.81 Burst Mode OPERATION 2.20 2.0 1.80 2.15 OUTPUT VOLTAGE (V) PULSE SKIP MODE 2.10 OSCILLATOR FREQUENCY (MHz) OSCILLATOR FREQUENCY (MHz) 1.9 1.79 2.05 2.00 1.8 1.78 –50 –25 0 25 50 75 100 125 2 2.5 3 3.5 4 4.5 5 5.5 6 0 200 400 600 800 1000 1200 TEMPERATURE (°C) INPUT VOLTAGE (V) LOAD CURRENT (mA) 3560 G07 3560 G08 3560 G09
RDS(ON) vs Input Voltage RDS(ON) vs Temperature Dynamic Supply Current
0.40 0.40 300 VOUT = 1.2V 0.35 ILOAD = 0A 0.35 V 250 IN = 2.7V VIN = 3.6V 0.30 0.30 200 0.25 PULSE SKIPPING MODE (Ω) MAIN SWITCH (Ω) VIN = 4.2V 0.25 0.20 150 DS(0N) SYNCHRONOUS R DS(ON) SWITCH R 0.15 0.20 100 0.10 0.15 0.05 DYNAMIC SUPPLY CURRENT (μA) 50 SYNCHRONOUS SWITCH Burst Mode OPERATION MAIN SWITCH 0.10 0 0 0 1 2 3 4 5 6 7 –50 –25 0 25 50 75 100 125 2 2.5 3 3.5 4 4.5 5 5.5 6 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 3560 G10 3560 G11 3560 G12 3560fb 4
TYPICAL PERFORMANCE CHARACTERISTICS (From Figure 1a Except for the Resistive Divider Resistor Values) Reference Voltage Effi ciency vs Output Current Effi ciency vs Output Current vs Temperature
100 100 0.615 VOUT = 1.3V Burst Mode OPERATION VIN = 3.6V 90 90 0.610 80 80 70 70 0.605 60 60 TAGE (V) PULSE SKIP MODE 50 50 0.600 40 40 EFFICIENCY (%) EFFICIENCY (%) 0.595 30 30 REFERENCE VOL 20 V 20 IN = 2.7V 0.590 10 VIN = 3.6V 10 VIN = 4.2V VIN = 4.2V V V OUT = 1.8V IN = 3.6V 0 0 0.585 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) 3560 G04 3560 G05 3560 G06
Oscillator Frequency Oscillator Frequency vs Temperature vs Supply Voltage Output Voltage vs Load Current
2.50 2.4 1.84 VIN = 3.6V VIN = 3.6V 2.45 2.3 1.83 2.40 2.35 2.2 1.82 2.30 2.25 2.1 1.81 Burst Mode OPERATION 2.20 2.0 1.80 2.15 OUTPUT VOLTAGE (V) PULSE SKIP MODE 2.10 OSCILLATOR FREQUENCY (MHz) OSCILLATOR FREQUENCY (MHz) 1.9 1.79 2.05 2.00 1.8 1.78 –50 –25 0 25 50 75 100 125 2 2.5 3 3.5 4 4.5 5 5.5 6 0 200 400 600 800 1000 1200 TEMPERATURE (°C) INPUT VOLTAGE (V) LOAD CURRENT (mA) 3560 G07 3560 G08 3560 G09
RDS(ON) vs Input Voltage RDS(ON) vs Temperature Dynamic Supply Current
0.40 0.40 300 VOUT = 1.2V 0.35 ILOAD = 0A 0.35 V 250 IN = 2.7V VIN = 3.6V 0.30 0.30 200 0.25 PULSE SKIPPING MODE (Ω) MAIN SWITCH (Ω) VIN = 4.2V 0.25 0.20 150 DS(0N) SYNCHRONOUS R DS(ON) SWITCH R 0.15 0.20 100 0.10 0.15 0.05 DYNAMIC SUPPLY CURRENT (μA) 50 SYNCHRONOUS SWITCH Burst Mode OPERATION MAIN SWITCH 0.10 0 0 0 1 2 3 4 5 6 7 –50 –25 0 25 50 75 100 125 2 2.5 3 3.5 4 4.5 5 5.5 6 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 3560 G10 3560 G11 3560 G12 3560fb 4
