Datasheet LTC3639 (Analog Devices) - 5

LTC3639
TYPICAL PERFORMANCE CHARACTERISTICS Quiescent Supply Current Quiescent Supply Current Switch Leakage Current vs Input Voltage vs Temperature vs Temperature
15 30 8 VIN = 150V VIN = 150V 7 25 SLEEP 6 5 10 20 4 15 SLEEP 3 2 5 10 SW = 150V SUPPLY CURRENT (µA) SUPPLY CURRENT (µA) 1 V IN V IN 0 SHUTDOWN 5 SWITCH LEAKAGE CURRENT (µA) SW = 0V SHUTDOWN –1 0 0 –2 0 30 60 90 120 150 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 VIN VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 3639 G10 3639 G12 3639 G11
Switch On-Resistance Switch On-Resistance vs Input Voltage vs Temperature Load Step Transient Response
7 8 OUTPUT 6 7 VOLTAGE 50mV/DIV 6 5 TOP TOP LOAD 5 CURRENT 4 50mA/DIV 4 3 BOTTOM V 3639 G15 IN = 48V 200µs/DIV BOTTOM 3 VOUT = 3.3V SWITCH ON-RESISTANCE (Ω) SWITCH ON-RESISTANCE (Ω) 1mA TO 100mA LOAD STEP 2 2 FIGURE 14 CIRCUIT 1 1 0 30 60 90 120 150 –55 –25 5 35 65 95 125 155 VIN VOLTAGE (V) TEMPERATURE (°C) 3639 G13 3639 G14
Operating Waveforms, VIN = 48V Operating Waveforms, VIN = 150V Short-Circuit and Recovery
OUTPUT OUTPUT VOLTAGE VOLTAGE 50mV/DIV 50mV/DIV OUTPUT VOLTAGE SWITCH SWITCH 1V/DIV VOLTAGE VOLTAGE 20V/DIV 50V/DIV INDUCTOR INDUCTOR INDUCTOR CURRENT CURRENT CURRENT 100mA/DIV 200mA/DIV 200mA/DIV V 3639 G16 3639 G17 3639 G18 IN = 48V 10µs/DIV VIN = 150V 10µs/DIV 500µs/DIV VOUT = 3.3V VOUT = 3.3V FIGURE 14 CIRCUIT IOUT = 100mA IOUT = 50mA FIGURE 14 CIRCUIT FIGURE 14 CIRCUIT 3639fc For more information www.linear.com/LTC3639 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts