Datasheet LT3027 (Analog Devices) - 3

LT3027
ELECTRICAL CHARACTERISTICS The
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denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
GND Pin Current (Per Channel) ILOAD = 0mA ● 25 50 µA VIN = VOUT(NOMINAL) ILOAD = 1mA ● 60 120 µA (Notes 5, 7) ILOAD = 10mA ● 250 400 µA ILOAD = 50mA ● 1 2 mA ILOAD = 100mA ● 2.4 4 mA Output Voltage Noise COUT = 10µF, CBYP = 0.01µF, ILOAD = 100mA, BW = 10Hz to 100kHz 20 µVRMS ADJ1/ADJ2 Pin Bias Current (Notes 3, 8) 30 100 nA Shutdown Threshold VOUT = Off to On ● 0.8 1.4 V VOUT = On to Off ● 0.25 0.65 V SHDN1/SHDN2 Pin Current VSHDN = 0V ● 0 0.5 µA (Note 9) VSHDN = 20V ● 1 3 µA Quiescent Current in Shutdown VIN = 6V, VSHDN = 0V (Both SHDN Pins) 0.01 0.1 µA Ripple Rejection (Note 3) VIN = 2.72V (Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, 55 65 dB ILOAD = 100mA Current Limit VIN = 7V, VOUT = 0V 200 mA VIN = 2.3V, ∆VOUT = – 5% ● 110 mA Input Reverse Leakage Current VIN = – 20V, VOUT = 0V ● 1 mA
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 5:
To satisfy requirements for minimum input voltage, the LT3027 is of a device may be impaired. tested and specified for these conditions with an external resistor divider (two 250k resistors) for an output voltage of 2.44V. The external resistor
Note 2:
The LT3027 regulator is tested and specified under pulse load divider will add a 5 conditions such that T µA DC load on the output. J ≈ TA. The LT3027E is guaranteed to meet performance specifications from 0°C to 125°C junction temperature.
Note 6:
Dropout voltage is the minimum input to output voltage differential Specifications over the – 40°C to 125°C operating junction temperature needed to maintain regulation at a specified output current. In dropout, the range are assured by design, characterization and correlation with output voltage will be equal to: VIN – VDROPOUT. statistical process controls. The LT3027I is guaranteed and tested over the
Note 7:
GND pin current is tested with VIN = 2.44V and a current source full – 40°C to 125°C operating junction temperature range. load. This means the device is tested while operating in its dropout region
Note 3:
The LT3027 is tested and specified for these conditions with the or at the minimum input voltage specification. This is the worst-case GND ADJ1/ADJ2 pin connected to the corresponding OUT1/OUT2 pin. pin current. The GND pin current will decrease slightly at higher input voltages.
Note 4:
Operating conditions are limited by maximum junction temperature. The regulated output voltage specification will not apply for
Note 8:
ADJ1 and ADJ2 pin bias current flows into the pin. all possible combinations of input voltage and output current. When
Note 9:
SHDN1 and SHDN2 pin current flows into the pin. operating at maximum input voltage, the output current range must be
Note 10:
For the LT3027 dropout voltage will be limited by the minimum limited. When operating at maximum output current, the input voltage input voltage specification under some output voltage/load conditions. See range must be limited. the curve of Minimum Input Voltage in the Typical Performance Characteristics. 3027fa 3