LT1965T-1.8 データシートの表示（PDF） - Linear Technology

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LT1965T-1.8

1.1A, Low Noise, Low Dropout Linear Regulator

Linear Technology 

Typical Performance Characteristics

LT1965 Series

SHDN Pin Input Current

6

5

4

3

2

1

0

0 2 4 6 8 10 12 14 16 18 20

SHDN PIN VOLTAGE (V)

1965 G27

SHDN Pin Input Current

6.0

VSHDN = 20V

5.9

5.8

5.7

5.6

5.5

5.4

5.3

5.2

5.1

5.0

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

1965 G28

ADJ Pin Bias Current

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

1965 G29

Current Limit vs VIN – VOUT

2.5

∆VOUT = 100mV

2.0

TJ = –50°C

TJ = 125°C

TJ = 25°C

1.5

1.0

TJ = 150°C

0.5

0

0 2 4 6 8 10 12 14 16 18 20

INPUT/OUTPUT DIFFERENTIAL (V)

1965 G30

Current Limit vs Temperature

3.0

VIN = 7V

VOUT = 0V

2.5

2.0

1.5

1.0

0.5

0

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

1965 G31

Reverse-Output Current

6

TJ = 25°C

VIN = 0V

5 VOUT = VADJ (LT1965)

VOUT = VSENSE

(LT1965-1.5/-1.8/-2.5/-3.3)

4 CURRENT FLOWS INTO

OUTPUT PIN

3

LT1965-1.5

LT1965

2

LT1965-1.8

1

LT1965-2.5

0

LT1965-3.3

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OUTPUT VOLTAGE (V)

1965 G32

Reverse-Output Current

0.6 VIN = 0V

VOUT = 1.2V (LT1965)

0.5 VOUT = 1.5V (LT1965-1.5)

VOUT = 1.8V (LT1965-1.8)

VOUT = 2.5V (LT1965-2.5)

0.4 VOUT = 3.3V (LT1965-3.3)

0.3 LT1965-1.5/-1.8/-2.5/-3.3

LT1965

0.2

0.1

0

–50 –25

0 25 50 75 100 125 150

TEMPERATURE (°C)

1965 G33

Ripple Rejection vs Frequency

90

80

70

60

50

40

30

20 IL = 0.75A

COUT = 10µF CERAMIC

10 VIN = VOUT(NOMINAL)

+ 1V + 50mVRMS RIPPLE

0

10

100

1k

10k

FREQUENCY (Hz)

100k 1M

1965 G34

For more information www.linear.com/LT1965

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