Datasheet LT1965 (Analog Devices) - 5

LT1965 Series
e lectrical characteristics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) PARAMETER CONDITIONS MIN TYP MAX UNITS
SHDN Pin Current (Note 10) VSHDN = 0V 0.01 1 µA VSHDN = 20V 5.5 10 µA Quiescent Current in Shutdown VIN = 6V, VSHDN = 0V 0.01 1 µA Ripple Rejection VIN – VOUT = 1.5V (AVG), VRIPPLE = 0.5VP-P, 57 75 dB fRIPPLE = 120Hz, ILOAD = 0.75A Current Limit VIN = 7V, VOUT = 0 2.4 A VIN = VOUT(NOMINAL) + 1V, ∆VOUT = –0.1V (TJ < 125°C) (Note 6) l 1.2 A VIN = VOUT(NOMINAL) + 1V, ∆VOUT = –0.1V, (H-Grade, TJ > 125°C) (Note 6) 1.1 A Input Reverse-Leakage Current VIN = –20V, VOUT = 0 1 mA Reverse-Output Current (Note 11) LT1965-1.5, VOUT = 1.5V, VIN = 0 275 525 µA LT1965-1.8, VOUT = 1.8V, VIN = 0 275 525 µA LT1965-2.5, VOUT = 2.5V, VIN = 0 275 525 µA LT1965-3.3, VOUT = 3.3V, VIN = 0 275 525 µA LT1965 (Note 4), VOUT = 1.2V, VIN = 0 175 400 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
To satisfy minimum input voltage requirements, the LT1965 may cause permanent damage to the device. Exposure to any Absolute adjustable version is tested and specified for these conditions with an Maximum Rating condition for extended periods may affect device external resistor divider (bottom 4.02k, top 4.32k) for an output voltage of reliability and lifetime. 2.5V. The external resistor divider adds 300µA of output DC load current.
Note 2:
Absolute maximum input to output differential voltage is not This external current is not factored into GND pin current. achievable with all combinations of rated IN pin and OUT pin voltages.
Note 7:
Dropout voltage is the minimum input-to-output voltage With the IN pin at 22V, the OUT pin may not be pulled below 0V. The total differential needed to maintain regulation at a specified output current. In measured voltage from IN to OUT must not exceed ±22V. dropout, the output voltage equals: (VIN – VDROPOUT)
Note 3:
The LT1965 regulators are tested and specified under pulse
Note 8:
GND pin current is tested with VIN = VOUT(NOMINAL) + 1V and a load conditions such that TJ @ TA. The LT1965E regulators are 100% current source load. GND pin current increases slightly in dropout. For tested at TA = 25°C and performance is guaranteed from 0°C to 125°C. the fixed output versions, an internal resistor divider will typically add Performance of the LT1965E over the full –40°C to 125°C operating 100µA to the GND pin current. See GND pin current curves in the Typical junction temperature range is assured by design, characterization and Performance Characteristics section. correlation with statistical process controls. The LT1965I regulators are
Note 9:
ADJ pin bias current flows into the ADJ pin. guaranteed over the full –40°C to 125°C operating junction temperature
Note 10:
SHDN pin current flows into the SHDN pin. range. The LT1965H is tested at 150°C operating junction temperature. High junction temperatures degrade operating lifetimes. Operating lifetime
Note 11:
Reverse-output current is tested with the IN pin grounded and is derated at junction temperatures greater than 125°C. the OUT pin forced to the rated output voltage. This current flows into the OUT pin and out of the GND pin.
Note 4:
The LT1965 adjustable version is tested and specified for these conditions with the ADJ connected to the OUT pin.
Note 12:
For the LT1965, LT1965-1.5 and LT1965-1.8, the minimum input voltage specification limits the dropout voltage under some output voltage/
Note 5:
Maximum junction temperature limits operating conditions. The load conditions. regulated output voltage specification does not apply for all possible combinations of input voltage and output current. Limit the output current
Note 13:
This IC includes overtemperature protection that is intended range if operating at the maximum input voltage. Limit the input-to-output to protect the device during momentary overload conditions. Junction voltage differential if operating at the maximum output current. temperature will exceed 125°C (LT1965E, LT1965I) or 150°C (LT1965H) when overtemperature is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. 1965fb For more information www.linear.com/LT1965 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Typical Applications Package Description Revision History Related Parts