LT1129CF-3.3 Просмотр технического описания (PDF) - Linear Integrated System

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Компоненты Описание

производитель

LT1129CF-3.3

Micropower Low Dropout Regulators with Shutdown

Linear Integrated System 

LT 1129/LT 1129-3.3/LT 1129-5

TYPICAL PERFOR A CE CHARACTERISTICS

LT1129-3.3

Ground Pin Current

2.0

1.8

TJ = 25°C

VOUT =

1.6 VSENSE

1.4

RLOAD = 33Ω

ILOAD = 100mA*

1.2

1.0

RLOAD = 66Ω

ILOAD = 50mA*

0.8

0.6

0.4

RLOAD = 330Ω

ILOAD = 10mA*

0.2

*For VOUT = 3.3V

0

0 1 2 3 4 5 6 7 8 9 10

INPUT VOLTAGE (V)

1129 G18

LT1129-3.3

Ground Pin Current

60

TJ = 25°C

VOUT = VSENSE

50

40

RLOAD = 4.7Ω

ILOAD = 700mA*

30

RLOAD = 6.6Ω

ILOAD = 500mA*

20

RLOAD = 11Ω

10

ILOAD = 300mA*

*For VOUT = 3.3V

0

0 1 2 3 4 5 6 7 8 9 10

INPUT VOLTAGE (V)

1129 G21

Ground Pin Current

70

VIN = 3.3V (LT1129-3.3)

60 VIN = 5V (LT1129-5)

VIN = 3.75V (LT1129)

50

DEVICE IS OPERATING

IN DROPOUT

TJ = 125°C

40

TJ = 25°C

30

20

TJ = –50°C

10

0

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7

OUTPUT CURRENT (A)

1129 G15

LT1129-5

Ground Pin Current

2.0

1.8

TJ = 25°C

VOUT = VSENSE

1.6

RLOAD = 50Ω

ILOAD = 100mA*

1.4

1.2

RLOAD = 100Ω

1.0

ILOAD = 50mA*

0.8

0.6

RLOAD = 500Ω

0.4

ILOAD = 10mA*

0.2

*For VOUT = 5V

0

0 1 2 3 4 5 6 7 8 9 10

INPUT VOLTAGE (V)

1129 G19

LT1129-5

Ground Pin Current

60

TJ = 25°C

VOUT = VSENSE

50

40

RLOAD = 7.1Ω

ILOAD = 700mA*

30

RLOAD = 10Ω

ILOAD = 500mA*

20

RLOAD = 16.6Ω

10

ILOAD = 300mA*

*For VOUT = 5V

0

0 1 2 3 4 5 6 7 8 9 10

INPUT VOLTAGE (V)

1129 G22

Shutdown Pin Threshold

(On-to-Off)

2.0

1.8 ILOAD = 1mA

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

–50 –25

0 25 50 75

TEMPERATURE (°C)

100 125

1129 G27

6

LT1129

Ground Pin Current

2.0

1.8

TJ = 25°C

VOUT =

1.6 VADJ

1.4

RLOAD = 38Ω

ILOAD = 100mA*

1.2

1.0

RLOAD = 75Ω

0.8

ILOAD = 50mA*

0.6

RLOAD = 375Ω

0.4

ILOAD = 10mA*

0.2

*For VOUT = 3.75V

0

0 1 2 3 4 5 6 7 8 9 10

INPUT VOLTAGE (V)

1129 G20

LT1129

Ground Pin Current

60

TJ = 25°C

VOUT = VADJ

50

RLOAD = 5.3Ω

40

ILOAD = 700mA*

30

RLOAD = 7.5Ω

ILOAD = 500mA*

20

RLOAD = 12.6Ω

10

ILOAD = 300mA*

*For VOUT = 3.75V

0

0 1 2 3 4 5 6 7 8 9 10

INPUT VOLTAGE (V)

1129 G23

Shutdown Pin Threshold

(Off-to-On)

2.0

1.8

1.6

ILOAD = 700mA

1.4

1.2

ILOAD = 1mA

1.0

0.8

0.6

0.4

0.2

0

–50 –25

0 25 50 75 100 125

TEMPERATURE (°C)

1129 G26

112935fc

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