Datasheet LTC3407A-2 (Analog Devices) - 4

LTC3407A-2
W U TYPICAL PERFOR A CE CHARACTERISTICS TA = 25
°
C unless otherwise specified. Burst Mode Operation Pulse Skipping Mode
SW SW 5V/DIV 5V/DIV VOUT V 50mV/DIV OUT 10mV/DIV IL 200mA/DIV IL 100mA/DIV VIN = 3.6V VIN = 3.6V 3407A2 G01 V 3407A2 G02 OUT = 1.8V 2μs/DIV VOUT = 1.8V 1μs/DIV ILOAD = 50mA ILOAD = 50mA CIRCUIT OF FIGURE 3 CIRCUIT OF FIGURE 3
Load Step Soft Start
VOUT1 200mV/DIV VIN 2V/DIV VOUT2 100mV/DIV I V L OUT1 500mA/DIV 1V/DIV IL ILOAD 500mA/DIV 500mA/DIV VIN = 3.6V VIN = 3.6V VOUT = 1.8V VOUT = 1.8V 3407A2 G03 3407A2 G16 I 20μs/DIV 1ms/DIV LOAD = 50mA TO 600mA ILOAD = 500mA CIRCUIT OF FIGURE 3 CIRCUIT OF FIGURE 4
Oscillator Frequency vs Oscillator Frequency vs Supply Efficiency vs Input Voltage Temperature Voltage
100 2.5 10 100mA VIN = 3.6V 90 800mA 8 80 10mA 2.4 6 1mA 70 4 60 2.3 2 50 0 40 2.2 – 2 EFFICIENCY (%) 30 FREQUENCY (MHz) – 4 20 2.1 FREQUENCY DEVIATION (%) – 6 10 VOUT = 1.8V – 8 CIRCUIT OF FIGURE 3 0 2.0 –10 2 3 4 5 6 –50 –25 0 25 50 75 100 125 2 3 4 5 6 INPUT VOLTAGE (V) TEMPERATURE (°C) SUPPLY VOLTAGE (V) 3407A2 G04 3407A2 G05 3407A2 G06 3407a2f 4