Datasheet LTC3543 (Analog Devices) - 5

LTC3543
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Switch Leakage (ISW) Dynamic Supply Current Dynamic Supply Current vs Temperature vs Input Voltage (VIN) vs Temperature
800 400 V 400 IN = 5.5V ILOAD = 0A RUN = 0V 700 VOUT = 1.5V 350 600 300 PULSE SKIP MODE 300 500 250 SYNCHRONOUS SWITCH 400 200 200 Y CURRENT (μA) Y CURRENT (μA) 300 150 LEAKAGE CURRENT (pA) SUPPL 200 SUPPL 100 100 MAIN SWITCH Burst Mode OPERATION 100 50 0 0 0 –40 –25 –10 5 20 35 50 65 80 95 110 125 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –40 –25 –10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3543 G15 3543 G16 3543 G17
Switch Leakage (ISW) vs Input Voltage (VIN) Start-Up from Shutdown
1000 RUN = 0V RUN 900 5V/DIV 800 VOUT 1V/DIV 700 INDUCTOR 600 MAIN SWITCH CURRENT 500 200mA/DIV 400 SYNCHRONOUS SWITCH 200μs/DIV 3543 G19 300 VIN = 3.6V LEAKAGE CURRENT (pA) VOUT = 1.5V 200 ILOAD = 300mA 100 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V) 3543 G18
Pulse Skip Operation Burst Mode Operation
VOUT VOUT AC COUPLED AC COUPLED 50mV/DIV 50mV/DIV SW SW 5V/DIV 5V/DIV IL IL 100mA/DIV 100mA/DIV 10μs/DIV 10μs/DIV 3543 G20 VIN = 3.6V 3543 G21 VIN = 3.6V VOUT = 1.5V VOUT = 1.5V ILOAD = 3mA ILOAD = 3mA VMODE = 3.6V VMODE = 0V 3543fa 5