LT1764 datasheet(6/16 Pages) LINER

Part #	LT1764

Description	1.1A, Low Noise, Low Dropout Linear Regulator

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Manufacturer	LINER [Linear Technology]

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LT1965

6

1965f

TYPICAL PERFORMANCE CHARACTERISTICS

Ripple Rejection vs Temperature

Minimum Input Voltage

Load Regulation

Output Noise Spectral Density

RMS Output Noise vs Load

Current (10Hz to 100kHz)

1.8V 10Hz to 100kHz

Output Noise

Reverse Output Current

Ripple Rejection vs Frequency

OUTPUT VOLTAGE (V)

0

1

2

3

4

5

6

246

8

10

1965 G16

TJ = 25°C

VIN = 0V

CURRENT FLOWS INTO

OUTPUT PIN

VOUT = VADJ

0

0.10

0.20

0.30

0.40

0.50

0.05

0.15

0.25

0.35

0.45

1965 G17

TEMPERATURE (°C)

–50

–25

0

25

50

75

100

125

VIN = 0V

VOUT = 1.2V

60

80

100

70

90

1965 G19

TEMPERATURE (°C)

–50

–25

0

25

50

75

100

125

IL = 0.75A

VIN = VOUT(NOMINAL) + 1V + 0.5P-P

RIPPLE AT f = 120Hz

0

1.0

2.0

2.5

0.5

1.5

1965 G20

TEMPERATURE (°C)

–50

–25

0

25

50

75

100

125

IL = 500mA

IL = 1.1A

IL = 100mA

–16

–12

–8

–4

0

–14

–10

–6

–2

1965 G21

TEMPERATURE (°C)

–50

–25

0

25

50

75

100

125

VIN = 2.3V

ΔIL = 1mA TO 1.1A

0.01

0.10

1.00

FREQUENCY (Hz)

10

100

1k

10k

100k

1965 G22

VOUT = 3.3V

VOUT = 1.2V

VOUT = 1.5V

VOUT = 1.8V

VOUT

= 2.5V

COUT = 10μF

IL = 1.1A

LOAD CURRENT (A)

20

30

50

70

80

0.0001

0.01

0.1

10

0.001

1

60

40

0

1965 G23

VOUT = 2.5V

VOUT = 3.3V

VOUT = 1.8V

VOUT = 1.2V

COUT = 10μF

IL = 1.1A

VOUT = 1.5V

400

μs/DIV

VOUT

100

μV/DIV

1965 G24

COUT = 10μF

IL = 1.1A

FREQUENCY (Hz)

20

30

50

60

80

90

10

1k

10k

1M

10

100

100k

70

40

0

1965 G18

IL = 0.75A

COUT = 10μF CERAMIC

VIN = VOUT(NOMINAL)

+ 1V + 50mVRMS RIPPLE

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