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LAEX Datasheet(PDF) 4 Page - Linear Technology |
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LAEX Datasheet(HTML) 4 Page - Linear Technology |
4 / 16 page 4 LT3020/LT3020-1.2/ LT3020-1.5/LT3020-1.8 sn3020 3020fas Current Limit (Note 12) VIN = 10V, VOUT = 0V 360 mA VIN = VOUT(NOMINAL) + 0.5V, ∆VOUT = –5% ● 110 310 mA Input Reverse Leakage Current VIN = –10V, VOUT = 0V 1 10 µA Reverse Output Current VOUT = 1.2V, VIN = 0V 3 5 µA (Notes 11, 13) LT3020-1.2 VOUT = 1.2V, VIN = 0V 10 15 µA LT3020-1.5 VOUT = 1.5V, VIN = 0V 10 15 µA LT3020-1.8 VOUT = 1.8V, VIN = 0V 10 15 µA The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TJ = 25°C. ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LT3020 regulators are tested and specified under pulse load conditions such that TJ ≈ TA. The LT3020 is 100% production 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: This IC includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 4: Maximum junction temperature limits operating conditions. The regulated output voltage specification does not apply for all possible combinations of input voltage and output current. Limit the output current range if operating at maximum input voltage. Limit the input voltage range if operating at maximum output current. Note 5: Typically the LT3020 supplies 100mA output current with a 1V input supply. The guaranteed minimum input voltage for 100mA output current is 1.10V. Note 6: The LT3020 is tested and specified for these conditions with an external resistor divider (20k and 30.1k) setting VOUT to 0.5V. The external resistor divider adds 10µA of output load current. The line regulation and load regulation specifications refer to the change in the 0.2V reference voltage, not the 0.5V output voltage. Specifications for fixed output voltage devices are referred to the output voltage. Note 7: Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current. In dropout the output voltage equals: (VIN – VDROPOUT). Note 8: GND pin current is tested with VIN = VOUT(NOMINAL) and a current source load. The device is tested while operating in its dropout region. This condition forces the worst-case GND pin current. GND pin current decreases at higher input voltages. Note 9: Adjust pin bias current flows out of the ADJ pin. Note 10: Shutdown pin current flows into the SHDN pin. Note 11: Reverse output current is tested with IN grounded and OUT forced to the rated output voltage. This current flows into the OUT pin and out of the GND pin. For fixed voltage devices this includes the current in the output resistor divider. Note 12: The LT3020 is tested and specified for these conditions with an external resistor divider (20k and 100k) setting VOUT to 1.2V. The external resistor divider adds 10µA of load current. Note 13: Reverse current is higher for the case of (rated_output) < VOUT < VIN, because the no-load recovery circuitry is active in this region and is trying to restore the output voltage to its nominal value. Note 14: Minimum input voltage is the minimum voltage required by the control circuit to regulate the output voltage and supply the full 100mA rated current. This specification is tested at VOUT = 0.5V. At higher output voltages the minimum input voltage required for regulation will be equal to the regulated output voltage VOUT plus the dropout voltage. TYPICAL PERFOR A CE CHARACTERISTICS Typical Dropout Voltage Dropout Voltage Quiescent Current OUTPUT CURRENT (mA) 0 250 225 200 150 175 125 100 75 50 25 0 80 3020 G01 20 10 30 50 70 90 40 60 100 TJ = 125°C TJ = 25°C TEMPERATURE (°C) –50 250 225 200 150 175 125 100 75 50 25 0 3020 G02 25 0 –25 50 75 125 100 IL = 1mA IL = 100mA IL = 50mA IL = 10mA VOUT = 1.2V TEMPERATURE (°C) –50 250 225 200 150 175 125 100 75 50 25 0 3020 G03 25 0 –25 50 75 125 100 VSHDN = VIN VSHDN = 0V VIN = 6V VOUT = 1.2V IL = 0 |
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