4

LT1763 Series

1763fa

Dropout Voltage

TEMPERATURE (

°C)

–50

0

50

75

1763 G03

–25

25

100

125

500

450

400

350

300

250

200

150

100

50

0

Quiescent Current

TEMPERATURE (

°C)

–50

100

1763 G04

050

–25

25

75

125

50

45

40

35

30

25

20

15

10

5

0

Typical Dropout Voltage

Guaranteed Dropout Voltage

OUTPUT CURRENT (mA)

500

450

400

350

300

250

200

150

100

50

0

1763 G01

0

50 100 150 200 250 300 350 400 450 500

OUTPUT CURRENT (mA)

500

450

400

350

300

250

200

150

100

50

0

1763 G02

0

50 100 150 200 250 300 350 400 450 500

= TEST POINTS

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. 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 LT1763, LT1763-1.5 and LT1763-1.8 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.

ELECTRICAL CHARACTERISTICS

LT1763-1.5

Output Voltage

LT1763-1.8

Output Voltage

TEMPERATURE (

°C)

–50

100

1763 G50

050

1.528

1.521

1.514

1.507

1.500

1.493

1.486

1.479

1.472

–25

25

75

125

TEMPERATURE (

°C)

–50

100

1763 G51

050

1.84

1.83

1.82

1.81

1.80

1.79

1.78

1.77

1.76

–25

25

75

125