Datasheet LT3022, LT3022-1.2, LT3022-1.5, LT3022-1.8 (Analog Devices) - 5

LT3022/LT3022-1.2 LT3022-1.5/LT3022-1.8
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS
Ripple Rejection (Note 13) LT3022 VIN – VOUT = 1V, VRIPPLE = 0.5VP-P , 55 70 dB fRIPPLE = 120Hz, ILOAD = 1A LT3022-1.2 VIN – VOUT = 1V, VRIPPLE = 0.5VP-P , 51 66 dB fRIPPLE = 120Hz, ILOAD = 1A LT3022-1.5 VIN – VOUT = 1V, VRIPPLE = 0.5VP-P , 51 66 dB fRIPPLE = 120Hz, ILOAD = 1A LT3022-1.8 VIN – VOUT = 1V, VRIPPLE = 0.5VP-P , 51 66 dB fRIPPLE = 120Hz, ILOAD = 1A Current Limit (Note 9) VIN = 10V, VOUT = 0V 2.6 A VIN = VOUT(NOMINAL) + 0.5V, ∆VOUT ≤ –5% l 1.1 1.7 A Input Reverse Leakage Current (Note 14) VIN = –10V, VOUT = 0V 4 40 µA Reverse Output Current (Notes 15, 16) LT3022 VOUT = 1.2V, VIN = 0V 0.1 5 µA LT3022-1.2 VOUT = 1.2V, VIN = 0V 0.1 5 µA LT3022-1.5 VOUT = 1.5V, VIN = 0V 0.1 5 µA LT3022-1.8 VOUT = 1.8V, VIN = 0V 0.1 5 µA Minimum Required Output Current VIN = 1.6V, VOUT = 1.2V l 1 mA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 7:
The LT3022 is tested and specified for these conditions with ADJ may cause permanent damage to the device. Exposure to any Absolute tied to OUT. Specifications for fixed output voltage devices are referred to Maximum Rating condition for extended periods may affect device the output voltage. reliability and lifetime.
Note 8:
Dropout voltage is the minimum input to output voltage differential
Note 2:
The LT3022 regulator is tested and specified under pulse load needed to maintain regulation at a specified output current. In dropout the conditions such that TJ ≈ TA. The LT3022 is 100% tested at TA = 25°C. output voltage equals: (VIN – VDROPOUT). Performance of the LT3022E over the full –40°C and 125°C operating
Note 9:
The LT3022 is tested and specified for these conditions with junction temperature range is assured by design, characterization and an external resistor divider (3.92k and 19.6k) setting VOUT to 1.2V. The correlation with statistical process controls. The LT3022I regulators are external resistor divider adds 50µA of load current. guaranteed over the full –40°C to 125°C operating junction temperature
Note 10:
GND pin current is tested with V range. High junction temperatures degrade operating lifetime. Operating IN = VOUT(NOMINAL) + 0.4V and a current source load. GND pin current increases in dropout. See GND pin lifetime is derated at junction temperatures greater than 125°C. current curves in the Typical Performance Characteristics section.
Note 3:
This IC includes overtemperature protection that is intended
Note 11:
Adjust pin bias current flows out of the ADJ pin. to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active.
Note 12:
Shutdown pin current flows into the SHDN pin. Continuous operation above the specified maximum operating junction
Note 13:
The LT3022 is tested and specified for this condition with an temperature may impair device reliability. external resistor divider (3.92k and 5.9k) setting VOUT to 0.5V. The external
Note 4:
Minimum input voltage is the voltage required by the LT3022 to resistor divider adds 50µA of load current. The specification refers to regulate the output voltage and supply the rated 1A output current. This the change in the 0.2V reference voltage, not the 0.5V output voltage. specification is tested at V Specifications for fixed output voltage devices are referred to the output OUT = 0.2V. For higher output voltages, the minimum input voltage required for regulation equals the regulated output voltage. voltage V
Note 14:
Input reverse leakage current flows out of the IN pin. OUT plus the dropout voltage or 1.1V, whichever is greater.
Note 5:
Maximum junction temperature limits operating conditions. The
Note 15:
Reverse output current is tested with IN grounded and OUT regulated output voltage specification does not apply for all possible forced to the rated output voltage. This current flows into the OUT pin and combinations of input voltage and output current. Limit the output current out of the GND pin. range if operating at maximum input voltage. Limit the input-to-output
Note 16:
Reverse current is higher for the case of (rated_output) voltage differential range if operating at maximum output current. < VOUT < VIN, because the no-load recovery circuitry is active in this region
Note 6:
The LT3022 typically supplies 1A output current with a 0.9V input and is trying to restore the output voltage to its nominal value. supply. The guaranteed minimum input voltage for 1A output current is 1.10V, especially if cold temperature operation is required. 3022fb 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Revision History Typical Application Related Parts