5

LT1761 Series

1761sfc

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

GND Pin Current

●

20

45

μA

●

55

100

μA

(Notes 5, 7)

●

230

400

μA

●

12

mA

●

2.2

4

mA

Output Voltage Noise

20

ADJ Pin Bias Current

(Notes 3, 8)

30

100

nA

Shutdown Threshold

●

0.8

2

V

●

0.25

0.65

V

SHDN Pin Current

●

0

0.5

μA

(Note 9)

●

13

μA

Quiescent Current in Shutdown

0.01

0.1

μA

Ripple Rejection (Note 3)

55

65

dB

Current Limit

200

mA

●

110

mA

Input Reverse Leakage Current

●

1mA

Reverse Output Current

LT1761-1.2

10

20

μA

(Note 10)

LT1761-1.5

10

20

μA

LT1761-1.8

10

20

μA

LT1761-2

10

20

μA

LT1761-2.5

10

20

μA

LT1761-2.8

10

20

μA

LT1761-3

10

20

μA

LT1761-3.3

10

20

μA

LT1761-5

10

20

μA

5

10

μA

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LT1761 regulators are tested and specified under pulse load

characterization and correlation with statistical process controls. The

LT1761MP is 100% tested and guaranteed over the – 55

°C to 125°C

temperature range.

Note 3: The LT1761 (adjustable versions) are tested and specified for

these conditions with the ADJ pin connected to the OUT 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 LT1761

(adjustable version) 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.

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

(whichever is greater) 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: ADJ pin bias current flows into the ADJ pin.

Note 9: SHDN pin current flows into the SHDN 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 LT1761, LT1761-1.2, LT1761-1.5, LT1761-1.8 and

LT1761-2 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 12: To satisfy requirements for minimum input voltage, current limit

The