Datasheet LT3757, LT3757A (Analog Devices) - 6

LT3757/LT3757A
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. INTVCC Minimum Output Current INTVCC vs Temperature vs VIN INTVCC Load Regulation
7.4 90 7.3 TJ = 150°C VIN = 8V 80 7.2 7.3 70 60 (V) 7.1 50 CC 7.2 INTVCC = 6V 40 VOLTAGE (V) INTV CURRENT (mA) INTV CC CC 7 CC = 4.5V 30 INTV 7.1 INTV 20 6.9 10 7.0 0 6.8 –75 –50 –25 0 25 50 75 100 125 150 0 5 10 15 20 25 30 35 40 0 10 20 30 40 50 60 70 TEMPERATURE (°C) VIN (V) INTVCC LOAD (mA) 3757 G13 3757 G14 3757 G15
INTVCC Dropout Voltage Gate Drive Rise INTVCC Line Regulation vs Current, Temperature and Fall Time vs CL
7.30 700 90 VIN = 6V 150°C INTVCC = 7.2V 80 600 125°C 7.25 70 500 75°C 60 RISE TIME FALL TIME 400 25°C TAGE (V) TAGE (mV) 50 7.20 VOL 300 0°C TIME (ns) 40 V CC INT 30 200 –55°C 7.15 DROPOUT VOL 20 100 10 7.10 0 0 0 5 10 15 20 25 30 35 40 0 5 10 15 20 0 5 10 15 20 25 30 VIN (V) INTVCC LOAD (mA) CL (nF) 3757 G16 3757 G17 3757 G18
Gate Drive Rise FBX Frequency Foldback and Fall Time vs INTVCC Typical Start-Up Waveforms Waveforms During Overcurrent
30 CL = 3300pF VIN = 12V VOUT VIN = 12V 10V/DIV 25 RISE TIME 20 VSW V 20V/DIV FALL TIME OUT 5V/DIV 15 TIME (ns) IL1A + IL1B 10 IL1A + IL1B 5A/DIV 5A/DIV 5 3757 G20 2ms/DIV 3757 G21 50µs/DIV
PAGE 31 CIRCUIT PAGE 31 CIRCUIT
0 3 6 9 12 15 INTVCC (V) 3757 G19 Rev. F 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts