LR1117A 查看數據表（PDF） - Leshan Radio Company,Ltd

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LR1117A

1A Adjustable/Fixed Low Dropout Linear Regulator

Leshan Radio Company,Ltd 

Typical Performance Characteristics

1.5

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0

0

TJ = 0°C

TJ = 25°C

TJ = 125°C

0.2 0.4

0.6 0.8 1.0

OUTPUT CURRENT (A)

Figure 2. Dropout Voltage vs. Output Current

1.260

1.255

1.250

1.245

1.240

1.235

1.230

1.225

1.220

1.215

1.210

-75 -50 -25 0 25 50 75 100 125 150 175

JUNCTION TEMPERATURE (°C)

Figure 4. Reference Voltage vs. Temperature

5

4

3

2

1

0

-75 -50 -25 0 25 50 75 100 125 150 175

JUNCTION TEMPERATURE (°C)

Figure 6. Minimum Load Current vs. Temperature

LESHAN RADIO COMPANY, LTD.

LR1117A

0.10

∆I = 1A

0.05

0

-0.05

-0.10

-0.15

-0.20

-75 -50 -25 0 25 50 75 100 125 150 175

JUNCTION TEMPERATURE (°C)

Figure 3. Load Regulation vs. Temperature

3.70

3.65

3.60

VOUT SET WITH 1% RESISTORS

VOUT = 3.6V1

3.55

3.50

3.45

3.40

3.35

3.30

VOUT = 3.3V

3.25

Note:

3.20

1. LR1117A Only

-75 -50 -25 0 25 50 75 100 125 150 175

JUNCTION TEMPERATURE (°C)

Figure 5. Output Voltage vs. Temperature

100

90

Note:

1. LR1117A Only

80

70

60

50

40

30

20

10

0

-75 -50 -25 0 25 50 75 100 125 150 175

JUNCTION TEMPERATURE (°C)

Figure 7. Adjust Pin Current vs. Temperature

4/9

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