Datasheet LTC3562 (Analog Devices) - 6

LTC3562
TYPICAL PERFORMANCE CHARACTERISTICS R600A Feedback Voltage Oscillator Frequency Output Voltage vs Temperature vs Temperature vs Load Current (B Version)
0.810 2.5 1.220 IOUT = 1mA VIN = 3.8V 0.808 2.4 VIN = 5.5V VOUT = 1.2V (TYPE-B) VIN = 3.8V 1.215 0.806 2.3 VIN = 3V 0.804 2.2 VIN = 2.7V 1.210 0.802 2.1 PULSE SKIP 0.800 (MHz) 2.0 1.205 TAGE (mV) TAGE (V) 0.798 f OSC 1.9 VOL VOL 1.200 0.796 1.8 0.794 1.7 1.195 0.792 1.6 0.790 1.5 1.190 –50 –25 0 25 50 75 100 –50 –25 0 25 50 75 100 0 100 200 300 400 500 600 TEMPERATURE (°C) TEMPERATURE (°C) LOAD CURRENT (mA) 3562 G10 3562 G11 3562 G12
Dynamic Supply Current Dynamic Supply Current vs Input Voltage vs Input Voltage Burst Mode Operation
45 6 IOUT = 0mA IOUT = 0mA VOUT600A VOUT = 1.2V 50mV/DIV 5 40 AC COUPLED TION Burst Mode OPERATION 4 35 SW A) μ 2V/DIV ( 3 I IN 30 INDUCTOR CURRENT (mA) 2 CURRENT FORCED Burst Mode CONTINUOUS OPERA IL = 100mA/ OPERATION DIV 25 1 3562 G15 2μs/DIV LDO MODE PULSE SKIP PVIN = 3.8V OPERATION 20 0 LOAD = 50mA 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 2 2.5 3 3.5 4 4.5 5 5.5 6 V VOLTAGE (V) IN VOLTAGE (V) 3562 G14 3562 G13 400mA – VOUT = 1.2V 400mA – VOUT = 2.5V 600mA – VOUT = 1.2V 600mA – VOUT = 2.5V 400mA – VOUT = 1.8V 400mA – VOUT = 3.3V 600mA – VOUT = 1.8V 600mA – VOUT = 3.3V
Forced Burst Mode Operation Output Voltage vs Load Current Switch RDS(ON) vs Input Voltage
VOUT600A 1.22 700 50mV/DIV AC 1.21 FORCED 600 400mA PMOS COUPLED Burst Mode 1.20 400mA NMOS OPERATION SW ) 600mA PMOS 1.19 500 2V/DIV Ω ( 1.18 400 1.17 DS(ON) INDUCTOR TAGE (V) LDO MODE 300 600mA NMOS CURRENT VOL 1.16 IL = 150mA/ 1.15 DIV SWITCH R 200 1.14 3562 G16 2μs/DIV 100 1.13 VIN = 3.8V PVIN = 3.8V VOUT = 1.2V (TYPE-B) LOAD = 50mA 1.12 0 0 20 40 60 80 100 120 140 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 LOAD CURRENT (mA) V 3562 G17 IN VOLTAGE (V) 3562 G18 3562fa 6