Datasheet LT3082 (Analog Devices) - 3

LT3082
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TJ = 25°C. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
SET Pin Current ISET VIN = 2V, ILOAD = 1mA 9.90 10 10.10 μA 2V ≤ VIN ≤ 40V, 1mA ≤ ILOAD ≤ 200mA l 9.80 10 10.20 μA Offset Voltage (VOUT – VSET) VOS VIN = 2V, ILOAD = 1mA –2 2 mV VIN = 2V, ILOAD = 1mA l –4 4 mV Load Regulation (Note 7) ΔISET ΔILOAD = 1mA to 200mA –0.1 nA ΔVOS ΔILOAD = 1mA to 200mA l –0.5 –2 mV Line Regulation ΔISET ΔVIN = 2V to 40V, ILOAD = 1mA 0.03 0.2 nA/V ΔVOS ΔVIN = 2V to 40V, ILOAD = 1mA 0.003 0.010 mV/V Minimum Load Current (Note 3) 2V ≤ VIN ≤ 40V l 300 500 μA Dropout Voltage (Note 4) ILOAD = 10mA l 1.22 1.45 V ILOAD = 200mA l 1.3 1.65 V Current Limit VIN = 5V, VSET = 0V, VOUT = –0.1V l 200 300 mA Error Amplifi er RMS Output Noise (Note 5) ILOAD = 200mA, 10Hz ≤ f ≤ 100kHz, COUT = 10μF, 33 μVRMS CSET = 0.1μF Reference Current RMS Output Noise (Note 5) 10Hz ≤ f ≤ 100kHz 0.7 nARMS Ripple Rejection f = 120Hz, VRIPPLE = 0.5VP-P, ILOAD = 0.1A, 90 dB COUT = 2.2μF, CSET = 0.1μF f = 10kHz 75 dB f = 1MHz 20 dB Thermal Regulation ISET 10ms Pulse 0.003 %/W
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
For the LT3082, dropout is specifi ed as the minimum input-to- may cause permanent damage to the device. Exposure to any Absolute output voltage differential required supplying a given output current. Maximum Rating condition for extended periods may affect device
Note 5:
Adding a small capacitor across the reference current resistor reliability and lifetime. lowers output noise. Adding this capacitor bypasses the resistor shot
Note 2:
Unless otherwise specifi ed, all voltages are with respect to VOUT. noise and reference current noise; output noise is then equal to error The LT3082E is tested and specifi ed under pulse load conditions such amplifi er noise (see the Applications Information section). that TJ ≅ TA. The LT3082E is 100% tested at TA = 25°C. Performance at
Note 6:
Diodes with series 1k resistors clamp the SET pin to the OUT pin. –40°C and 125°C is assured by design, characterization, and correlation These diodes and resistors only carry current under transient overloads. with statistical process controls. The LT3082I is guaranteed to meet all
Note 7:
Load regulation is Kelvin-sensed at the package. data sheet specifi cations over the full –40°C to 125°C operating junction
Note 8:
This IC includes overtemperature protection that protects the temperature range. The LT3082MP is 100% tested and guaranteed over device during momentary overload conditions. Junction temperature the –55°C to 125°C operating junction temperature range. exceeds the maximum operating junction temperature when
Note 3:
Minimum load current is equivalent to the quiescent current of overtemperature protection is active. Continuous operation above the the part. Since all quiescent and drive current is delivered to the output specifi ed maximum operating junction temperature may impair device of the part, the minimum load current is the minimum current required to reliability. maintain regulation. 3082f 3