Datasheet LT3061 (Analog Devices) - 4

LT3061 Series
ELECTRICAL 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
Output Voltage Noise COUT = 10µF, ILOAD = 100mA, CREF/BYP = 0.01µF 30 µVRMS VOUT = 600mV, BW = 10Hz to 100kHz ADJ Pin Bias Current (Notes 4, 9) l 15 60 nA Shutdown Threshold VOUT = Off to On l 0.8 1.5 V VOUT = On to Off l 0.3 0.7 V SHDN Pin Current (Note 10) VSHDN = 0V l <1 µA VSHDN = 45V l 1.2 3 µA Quiescent Current in Shutdown VIN = 45V, VSHDN = 0V 1.25 3 µA Ripple Rejection LT3061-3.3 58 73 dB VIN – VOUT = 1.5V (AVG), VRIPPLE = 0.5VP-P, LT3061-5 55 70 dB fRIPPLE = 120Hz, ILOAD = 200mA LT3061 (Note 4) 70 85 dB Current Limit VIN = 7V, VOUT = 0 180 mA VIN = VOUT(NOMINAL) + 1V (Note 11), ΔVOUT = –5% l 110 mA Input Reverse Leakage Current VIN = -45V, VOUT = 0 l 1 mA Output Discharge Time (Note 6) VOUT Discharged to 10% of Nominal, COUT = 10μF l 0.75 2 ms Reverse Output Current LT3061-3.3: VOUT = 3.3V, VIN = VSHDN = 2.1V 7.3 15 µA LT3061-5: VOUT = 5V, VIN = VSHDN = 2.1V 8.4 15 µA LT3061: VOUT = 3.3V, VIN = VSHDN = 2.1V (Note 4) 2.5 15 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
To satisfy minimum input voltage requirements, the LT3061 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 60k, top 230k) for an output voltage of reliability and lifetime. 2.9V. The external resistor divider adds 10µA of DC load on the output.
Note 2:
Absolute maximum input to output differential voltage is not The 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 50V, 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 ±50V. dropout, the output voltage equals: (VIN – VDROPOUT).
Note 3:
The LT3061 is tested and specified under pulse load conditions
Note 8:
GND pin current is tested with VIN = VOUT(NOMINAL) + 0.6V and a such that TJ ≅ TA. The LT3061E regulators are 100% tested at TA = 25°C current source load. GND pin current will increase in dropout. See GND and performance is guaranteed from 0°C to 125°C. Performance at pin current curves in the Typical Performance Characteristics section. For –40°C to 125°C is assured by design, characterization and correlation fixed voltage options, an internal resistor divider will add 5μA to the GND with statistical process controls. The LT3061I regulators are guaranteed pin current. See the GND Pin Current curves in the Typical Performance over the full –40°C to 125°C operating junction temperature range. The Characteristics section. LT3061MP regulators are 100% tested over the –55°C to 150°C operating
Note 9:
ADJ pin bias current flows out of the ADJ pin. junction temperature. The LT3061H regulators are 100% tested at the
Note 10:
SHDN pin current flows into the SHDN pin. 150°C operating junction temperature. High junction temperatures degrade operating lifetimes. Operating lifetime is derated at junction temperature
Note 11:
To satisfy requirements for minimum input voltage, current limit greater than 125°C. is tested at VIN = VOUT(NOMINAL) + 1V or VIN = 2.1V, whichever is greater.
Note 4:
The LT3061 adjustable version is tested and specified for these
Note 12:
This IC includes thermal limit which protects the device during conditions with the ADJ connected to the OUT pin. momentary overload conditions. Junction temperature exceeds 125°C (E- and I-Grades) or 150°C (MP- and H-Grades) if thermal limit is active.
Note 5:
Maximum junction temperature limits operating conditions. The Continuous operation above the specified maximum junction temperature regulated output voltage specification does not apply for all possible may impair device reliability. combinations of input voltage and output current. Limit the output current range if operating at the maximum input voltage. Limit the input-to-output voltage differential if operating at maximum output current. Current limit foldback limits the maximum output current as a function of input-to- output voltage. See Current Limit vs VIN – VOUT in the Typical Performance Characteristics section. 3061fb 4 For more information www.linear.com/LT3061