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LT3080EDD-1-TR Datasheet(PDF) 3 Page - Linear Technology |
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LT3080EDD-1-TR Datasheet(HTML) 3 Page - Linear Technology |
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3 / 24 page  LT3080-1 3 30801fa The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS SET Pin Current ISET VIN = 1V, VCONTROL = 2.0V, ILOAD = 1mA, TJ = 25°C VIN ≥ 1V, VCONTROL ≥ 2.0V, 1mA ≤ ILOAD ≤ 1.1A (Note 9) ● 9.90 9.80 10 10 10.10 10.20 μA μA Output Offset Voltage (VOUT – VSET)VOS VIN = 1V, VCONTROL = 2V, IOUT = 1mA ● –2 –3.5 2 3.5 mV mV Load Regulation ΔISET ΔVOS ΔVOS ΔILOAD = 1mA to 1.1A ΔILOAD = 1mA to 1.1A (Note 8) ΔILOAD = 1mA to 1.1A (Note 8) ● –0.1 27.5 34 48 nA mV mV Line Regulation (Note 9) ΔISET ΔVOS VIN = 1V to 22V, VCONTROL=1V to 22V, ILOAD=1mA VIN = 1V to 22V, VCONTROL=1V to 22V, ILOAD=1mA ● 0.1 0.003 0.5 nA/V mV/V Minimum Load Current (Notes 3, 9) VIN = VCONTROL = 10V VIN = VCONTROL = 22V ● ● 300 500 1 μA mA VCONTROL Dropout Voltage (Note 4) ILOAD = 100mA ILOAD = 1.1A ● 1.2 1.35 1.6 V V VIN Dropout Voltage (Note 4) ILOAD = 100mA ILOAD = 1.1A ● ● 100 350 200 500 mV mV CONTROL Pin Current (Note 5) ILOAD = 100mA ILOAD = 1.1A ● ● 4 17 6 30 mA mA Current Limit (Note 9) VIN = 5V, VCONTROL = 5V, VSET = 0V, VOUT = –0.1V ● 1.1 1.4 A Error Amplifier RMS Output Noise (Note 6) ILOAD = 1.1A, 10Hz ≤ f ≤ 100kHz, COUT = 10μF, CSET = 0.1μF 40 μVRMS Reference Current RMS Output Noise (Note 6) 10Hz ≤ f ≤ 100kHz 1 nARMS Ripple Rejection f = 120Hz, VRIPPLE = 0.5VP-P, ILOAD = 0.2A, CSET = 0.1μF, COUT = 2.2μF f = 10kHz f = 1MHz 75 55 20 dB dB dB Thermal Regulation, ISET 10ms Pulse 0.003 %/W Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: Unless otherwise specified, all voltages are with respect to VOUT. The LT3080-1 is tested and specified under pulse load conditions such that TJ ≈ TA. The LT3080-1 is 100% tested at TA = 25°C. Performance at – 40°C and 125°C is assured by design, characterization and correlation with statistical process controls. Note 3: Minimum load current is equivalent to the quiescent current of the part. Since all quiescent and drive current is delivered to the output of the part, the minimum load current is the minimum current required to maintain regulation. Note 4: For the LT3080-1, dropout is caused by either minimum control voltage (VCONTROL) or minimum input voltage (VIN). Both parameters are specified with respect to the output voltage. The specifications represent the minimum input-to-output differential voltage required to maintain regulation. Note 5: The CONTROL pin current is the drive current required for the output transistor. This current will track output current with roughly a 1:60 ratio. The minimum value is equal to the quiescent current of the device. Note 6: Output noise is lowered by adding a small capacitor across the voltage setting resistor. Adding this capacitor bypasses the voltage setting resistor shot noise and reference current noise; output noise is then equal to error amplifier noise (see the Applications Information section). Note 7: SET pin is clamped to the output with diodes. These diodes only carry current under transient overloads. Note 8: Load regulation is Kelvin sensed at the package. Note 9: Current limit may decrease to zero at input-to-output differential voltages (VIN – VOUT) greater than 22V. Operation at voltages for both IN and VCONTROL is allowed up to a maximum of 36V as long as the difference between input and output voltage is below the specified differential (VIN – VOUT) voltage. Line and load regulation specifications are not applicable when the device is in current limit. Note 10: This IC includes over-temperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed the maximum operating junction temperature when over-temperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. ELECTRICAL CHARACTERISTICS |
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