Datasheet LTC3618 (Analog Devices) - 7

LTC3618
Typical perForMance characTerisTics TA = 25°C, VIN = 3.3V, f = 1MHz, Figure 3 Circuit, unless otherwise noted. Switch Leakage Current No Load Supply Current No Load Supply Current vs Temperature vs Input Voltage vs Temperature
2.0 5.0 5.0 VIN = 5.5V 1.8 4.5 4.5 1.6 4.0 4.0 1.4 1.2 3.5 3.5 1.0 3.0 3.0 MAIN SWITCH 0.8 2.5 2.5 SWITCH LEAKAGE (µA) 0.6 SUPPLY CURRENT (mA) 2.0 SUPPLY CURRENT (mA) 2.0 0.4 SYNCHRONOUS SWITCH 0.2 1.5 1.5 0 1.0 1.0 –40 –25 –10 5 20 35 50 65 80 95 110 125 2.25 2.75 3.25 3.75 4.25 4.75 5.25 –45 –20 5 30 55 80 105 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3618 G19 3618 G21 3618 G20
Sinking Current Tracking Up/Down
TRACK/SS SW1 500mV/DIV VDDQ SW2 500mV IL2 PGOOD 1A/DIV 5V/DIV IL1 1A/DIV 3618 G22 V 3618 G23 DDQ = 1.8V 400ns/DIV 2ms/DIV VTT = 0.9V I FORCED CONTINUOUS MODE LOAD1, ILOAD2 = –3A VDDQ = 0V to 0.6V ILOAD = 1A
Internal Start-Up VDDQ Internal Start-Up VTT
RUN RUN 5V/DIV 5V/DIV PGOOD PGOOD 2V/DIV 2V/DIV VDDQ VTT 1V/DIV 500mV/DIV IL IL 1A/DIV 1A/DIV 3618 G24 3618 G25 VDDQ = 1.8V 1ms/DIV VTT = 0.9V 400µs/DIV NO LOAD NO LOAD 3618fc For more information www.linear.com/LTC3618 7 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts