LM3555 datasheet(8/38 Pages) TI1

部品番号	LM3555

部品情報	Synchronous Boost Converter

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VIN (V)

2.00

1.70

1.40

1.10

0.80

0.50

2.5

3.0

3.5

4.0

4.5

5.0

5.5

TA = +25°C

TA = +85°C

TA = -30°C

VLED = 6.9V (2 LEDs)

ILED = 400mA

BRCTORCH (#)

0.20

0.18

0.16

0.14

0.12

0.10

0.08

0.06

0.04

0.02

0.00

0

1

2

3

4

5

6

7

TA = -30°C, +25°C, +85°C

VIN (V) = 3.6 V, VLED (V) = 6.3 V (2 LEDs)

VIN (V)

1.50

1.25

1.00

0.75

0.50

0.25

0.00

2.5

3.0

3.5

4.0

4.5

5.0

5.5

TA = +25°C

TA = +85°C

TA = -30°C

VLED = 6.75V (2 LEDs)

ILED = 320 mA

VIN (V)

0.44

0.43

0.42

0.41

0.40

0.39

0.38

0.37

0.36

2.5

3.0

3.5

4.0

4.5

5.0

5.5

TA = -30°C

TA = +25°C

TA = +85°C

VLED = 6.9V (2 LEDs)

VIN (V)

0.35

0.34

0.33

0.32

0.31

0.30

0.29

2.5

3.0

3.5

4.0

4.5

5.0

5.5

TA = -30°C

TA = +25°C

TA = +85°C

VLED = 6.75V (2 LEDs)

BRC (#)

0.50

0.48

0.46

0.44

0.42

0.40

0.38

0.36

0.34

0.32

0.30

0.28

0.26

0.24

0.22

0.20

0.18

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

TA = +85°C

TA = -30°C and +25°C

8

LM3555

SNVS594G – DECEMBER 2008 – REVISED APRIL 2016

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6.7 Typical Characteristics

Unless otherwise specified: TA = 25°C; VIN = 3.6 V; CIN1= 10 µF, CIN2= 0.1 µF, COUT = 11 µF; L = 2.2 µH.

Two Series LEDs Flash

Figure 1. LED Current vs Brightness Code

Two Series LEDs at 320 mA

Figure 2. LED Current vs Input Voltage

Two series LEDs at 320 mA

Figure 3. Input Current vs Input Voltage

Two series LEDs at 400 mA

Figure 4. LED Current vs Input Voltage

Two Series LEDs at 400 mA

Figure 5. Input Current vs Input Voltage

2 LEDs

Figure 6. Torch Current vs Brightness Code

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