Datasheet LTC3406A (Analog Devices) - 4

LTC3406A
TYPICAL PERFORMANCE CHARACTERISTICS (From Front Page Figure Except for the Resistive Divider Resistor Values) Reference Voltage vs Output vs Load Current Effi ciency vs Input Voltage Temperature
1.820 100 0.615 VOUT = 1.8V VIN = 2.7V VIN = 3.6V 1.816 VIN = 3.6V 90 VIN = 4.2V 0.610 1.812 80 1.808 70 0.605 1.804 60 TAGE (V) TAGE (V) 1.800 50 0.600 1.796 40 EFFICIENCY (%) 0.595 OUTPUT VOL 1.792 30 REFERENCE VOL 1.788 20 IL = 10mA 0.590 I 1.784 10 L = 100mA IL = 600mA VOUT = 2.5V 1.780 0 0.585 0 200 400 600 2 3 4 5 6 –50 –25 0 25 50 75 100 125 OUTPUT CURRENT (mA) INPUT VOLTAGE (V) TEMPERATURE (°C) 3406A G04 3406A G05 3406A G06
Oscillator Frequency vs Oscillator Frequency vs Temperature Input Voltage Burst Mode
1.60 1.60 VIN = 3.6V 1.55 1.55 SW 2V/DIV 1.50 1.50 1.45 VOUT 20mV/DIV 1.45 1.40 AC COUPLED I TOR FREQUENCY (MHz) TOR FREQUENCY (MHz) 1.35 L 1.40 200mA/DIV 1.30 OSCILLA 1.35 OSCILLA 1.25 VIN = 3.6V 4μs/DIV 3406A G09 VOUT = 1.8V 1.30 1.20 ILOAD = 10mA –50 –25 0 25 50 75 100 125 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Burst Mode OPERATION TEMPERATURE (°C) INPUT VOLTAGE (V) 3406A G07 3406A G08
RDS(ON) vs Input Voltage RDS(ON) vs Temperature Dynamic Supply Current
0.40 0.40 10 VOUT = 1.2V 9 0.35 ILOAD = 0A 0.35 VIN = 2.7V VIN = 3.6V 8 0.30 7 0.30 ) 0.25 Ω 6 (Ω) MAIN SWITCH ( VIN = 4.2V 0.25 0.20 Y CURRENT (μA) 5 DS(0N) SYNCHRONOUS DS(ON) R SWITCH R 0.15 4 0.20 3 0.10 2 0.15 0.05 DYNAMIC SUPPL SYNCHRONOUS SWITCH 1 MAIN SWITCH 0.10 0 0 0 1 2 3 4 5 6 7 –50 –25 0 25 50 75 100 125 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 INPUT VOLTAGE (V) TEMPERATURE (°C) INPUT VOLTAGE (V) 3406A G10 3406A G11 3406A G12 3406afa 4