Datasheet LT3081 (Analog Devices) - 4

LT3081
e lecTrical characTerisTics The
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denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
TEMP Output Current (Note 9) TJ > 5°C 1 µA/°C TEMP Output Current Absolute Error (Note 9) 0°C <TJ ≤ 125°C –10 10 µA 125°C <TJ ≤ 150°C –15 15 µA Reference Current RMS Output Noise (Note 5) 10Hz ≤ f ≤ 100kHz 5.7 nARMS Error Amplifier RMS Output Noise (Note 5) ILOAD = 1.5A, 10Hz ≤ f ≤ 100kHz, COUT =10µF, 27 µVRMS CSET = 0.1µF Ripple Rejection f = 120Hz 75 90 dB VRIPPLE = 0.5VP-P, ILOAD = 0.1A, CSET = 0.1µF, f = 10kHz 75 dB COUT=10µF, VIN = VOUT(NOMINAL) + 3V 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 LT3081, dropout is specified 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 specified, all voltages are with respect to VOUT. noise and reference current noise; output noise is then equal to error The LT3081 is tested and specified under pulse load conditions such amplifier noise (see Applications Information section). that TJ ≈ TA. The LT3081E is tested at TA = 25°C and performance is
Note 6:
Diodes with series 400Ω resistors clamp the SET pin to the guaranteed from 0°C to 125°C. Performance of the LT3081E over the OUT pin. These diodes and resistors only carry current under transient full –40°C and 125°C operating temperature range is assured by design, overloads. characterization, and correlation with statistical process controls. The
Note 7:
Load regulation is Kelvin sensed at the package. LT3081I is guaranteed over the full –40°C to 125°C operating junction temperature range. The LT3081MP is 100% tested and guaranteed
Note 8:
This IC includes overtemperature protection that protects the over the –55°C to 150°C operating junction temperature range. The device during momentary overload conditions. Junction temperature LT3081H is tested at 150°C operating junction temperature. High junction exceeds the maximum operating junction temperature when temperatures degrade operating lifetimes. Operating lifetime is degraded at overtemperature protection is active. Continuous operation above the junction temperatures greater than 125°C. specified maximum operating junction temperature may impair device reliability.
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
Note 9:
The TEMP pin output current represents the average die junction of the part, the minimum load current is the minimum current required to temperature. Due to power dissipation and thermal gradients across the maintain regulation. die, the TEMP pin output current measurement does not guarantee that absolute maximum junction temperature is not exceeded. 3081fc 4 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