LT3023EMSE datasheet(3/16 Pages) LINER

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LT3023

3023f

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

GND Pin Current (Per Channel)

ILOAD = 0mA

µA

VIN = VOUT(NOMINAL)

ILOAD = 1mA

100

µA

(Notes 5, 7)

ILOAD = 10mA

230

400

µA

ILOAD = 50mA

ILOAD = 100mA

2.2

Output Voltage Noise

COUT = 10µF, CBYP = 0.01µF, ILOAD = 100mA, BW = 10Hz to 100kHz

µVRMS

ADJ1/ADJ2 Pin Bias Current

(Notes 3, 8)

100

Shutdown Threshold

VOUT = Off to On

0.8

1.4

VOUT = On to Off

0.25

0.65

SHDN1/SHDN2 Pin Current

VSHDN = 0V

0.5

µA

(Note 9)

VSHDN = 20V

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,

ILOAD = 50mA

Current Limit

VIN = 7V, VOUT = 0V

200

VIN = 2.3V, ∆VOUT = – 5%

110

Input Reverse Leakage Current

VIN = – 20V, VOUT = 0V

1mA

Reverse Output Current (Notes 3,10) VOUT = 1.22V, VIN < 1.22V

µA

The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. (Note 2)

ELECTRICAL CHARACTERISTICS

Note 6: Dropout voltage is the minimum input to output voltage differential

needed to maintain regulation at a specified output current. In dropout, the

output voltage will be equal to: VIN – VDROPOUT.

Note 7: GND pin current is tested with VIN = 2.44V and a current source

load. This means the device is tested while operating in its dropout region

or at the minimum input voltage specification. This is the worst-case GND

pin current. The GND pin current will decrease slightly at higher input

voltages.

Note 8: ADJ1 and ADJ2 pin bias current flows into the pin.

Note 9: SHDN1 and SHDN2 pin current flows into the pin.

Note 10: Reverse output current is tested with the IN pin grounded and the

OUT pin forced to the rated output voltage. This current flows into the OUT

pin and out the GND pin.

Note 11: For the LT3023 dropout voltage will be limited by the minimum

input voltage specification under some output voltage/load conditions. See

the curve of Minimum Input Voltage in the Typical Performance

Characteristics.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LT3023 regulator is tested and specified under pulse load

conditions such that TJ ≈ TA. The LT3023 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: The LT3023 is tested and specified for these conditions with the

ADJ1/ADJ2 pin connected to the corresponding OUT1/OUT2 pin.

Note 4: Operating conditions are limited by maximum junction

temperature. The regulated output voltage specification will not apply for

all possible combinations of input voltage and output current. When

operating at maximum input voltage, the output current range must be

limited. When operating at maximum output current, the input voltage

range must be limited.

Note 5: To satisfy requirements for minimum input voltage, the LT3023 is

tested and specified for these conditions with an external resistor divider

(two 250k resistors) for an output voltage of 2.44V. The external resistor

divider will add a 5

µA DC load on the output.

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