Datasheet LT3042 (Analog Devices) - 8

LT3042
TYPICAL PERFORMANCE CHARACTERISTICS TJ = 25°C, unless otherwise noted. Input Pin Current Internal Current Limit Internal Current Limit
0.3 500 300 VIN = 2V 150°C RILIM = 0Ω VIN = 20V 125°C 450 VOUT = 0V RILIM = 0Ω 25°C 250 VOUT = 0V –55°C 400 350 0.2 V 200 300 IN = 7.5V 250 150 VIN = 2.5V 200 0.1 100 INPUT CURRENT (mA) CURRENT LIMIT (mA) 150 CURRENT LIMIT (mA) 100 50 50 0 0 0 –20 –18 –16 –14 –12 –10 –8 –6 –4 –2 0 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 ENABLE PIN VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) 3042 G25 3042 G26 3042 G27
Internal Current Limit Programmable Current Limit Programmable Current Limit
500 400 100 RILIM = 0Ω RILIM = 625Ω RILIM = 2.49kΩ 450 350 VOUT = 0V 90 VOUT = 0V 400 START OF FOLDBACK 80 300 350 70 300 250 V 60 IN = 7.5V VIN = 7.5V 250 200 50 VIN = 2.5V V 200 IN = 2.5V 150 40 CURRENT LIMIT (mA) 150 CURRENT LIMIT (mA) CURRENT LIMIT (mA) 30 100 100 150°C 20 125°C 50 25°C 50 10 –55°C 0 0 0 0 2 4 6 8 10 12 14 16 18 20 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 INPUT-TO-OUTPUT DIFFERENTIAL (V) TEMPERATURE (°C) TEMPERATURE (°C) 3042 G28 3042 G29 3042 G30
ILIM Pin Current PGFB Rising Threshold PGFB Hysteresis
500 310 8 VILIM = 0V VIN = 2V VIN = 2V 450 RSET = 33.2kΩ 308 7 400 306 6 350 304 300 302 5 250 300 4 200 298 3 150 296 ILIM PIN CURRENT (µA) PGFB HYSTERESIS (mV) 2 100 V 294 IN = 2.5V PGFB RISING THRESHOLD (mV) 50 VIN = 5V 292 1 VIN = 10V 0 290 0 0 20 40 60 80 100 120 140 160 180 200 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 OUTPUT CURRENT (mA) TEMPERATURE (°C) TEMPERATURE (°C) 3042 G31 3042 G32 3042 G33 3042fb 8 For more information www.linear.com/LT3042 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