Datasheet LT3081 (Analog Devices) - 6

LT3081
Typical perForMance characTerisTics TJ = 25°C unless otherwise specified. Dropout Voltage Internal Current Limit Internal Current Limit
1.5 3.0 2.0 VIN = 7V VOUT = 0V 1.8 2.5 1.4 1.6 TO-220 AND 2.0 1.4 DD-PAK 1.3 1.2 I TSSOP LOAD = 1.5A 1.5 1.0 AND DFN 1.2 0.8 ILOAD = 5mA CURRENT LIMIT (A) 1.0 CURRENT LIMIT (A) 0.6 DROPOUT VOLTAGE (V) 1.1 0.5 0.4 0.2 1.0 0 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 0 6 12 18 24 30 36 TEMPERATURE (°C) TEMPERATURE (°C) INPUT-TO-OUTPUT DIFFERENTIAL VOLTAGE (V) 3081 G10 3081 G11 3081 G12
TO-220 Package Maximum Power Dissipation Programmable Current Limit Programmable Current Limit
30 1.6 2.0 TJ = 25°C VIN – VOUT = 20V V 1.4 IN = 7V R 25 LIMITED BY FOLDBACK ILIM = 4.53k VOUT = 0V CURRENT LIMIT 1.2 1.5 20 1.0 RILIM = 3.01k V 15 IN – VOUT = 10V 0.8 1.0 POWER (W) 0.6 10 VIN – VOUT = 5V RILIM = 1.50k 0.4 0.5 5 PROGRAMMED CURRENT LIMIT (A) 0.2 VIN = 7V PROGRAMMED CURRENT LIMIT (A) θJC = 3°C/W VOUT = 0V 0 0 0 50 60 70 80 90 100 110 120 130 140 150 –50 –25 0 25 50 75 100 125 150 0 1 2 3 4 5 6 CASE TEMPERATURE (°C) TEMPERATURE (°C) RILIM (kΩ) 3081 G13 3081 G39 3081 G14
Programmable Current Limit TEMP Pin Current IMON Pin Current
1.05 160 350 RSET = 20k 1.00 140 300 RILIM RILIM RILIM 1.5k 3.01k 4.53k 120 250 0.95 100 200 0.6 80 150 60 0.4 PIN CURRENT (µA) OUTPUT VOLTAGE (V) TEMP PIN CURRENT (µA) 100 40 I MON 0.2 20 50 0 0 0 0 0.5 1 1.5 2 –50 –25 0 25 50 75 100 125 150 0 0.3 0.6 0.9 1.2 1.5 OUTPUT CURRENT (A) TEMPERATURE (°C) LOAD CURRENT (A) 3081 G15 3081 G16 3081 G17 3081fc 6 For more information www.linear.com/LT3081 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