LM3642 datasheet(7/30 Pages) TI2

7 / 30 page

2.7 3.0 3.3 3.6 3.9 4.1 4.4 4.7 5.0 5.3 5.5

5.00

5.03

5.06

5.09

5.12

5.15

5.18

5.21

5.24

5.27

5.30

VIN (V)

+25°C

+85°C

-40°C

2.5 2.7 2.9 3.1 3.2 3.4 3.6 3.7 3.9 4.1 4.2

0.10

0.11

0.12

0.13

0.15

0.16

0.17

0.18

0.19

0.20

VIN (V)

2.8 3.1 3.4 3.7 3.9 4.2 4.5 4.7 5.0 5.3 5.5

1.00

1.06

1.12

1.18

1.24

1.30

1.36

1.42

1.48

1.54

1.60

VIN (V)

1.5A

1.4A

1.31A

1.22A

1.1125A

2.8 3.0 3.1 3.3 3.4 3.5 3.7 3.8 4.0 4.1 4.2

0.15

0.18

0.20

0.23

0.25

0.28

0.30

0.33

0.35

0.38

0.40

VIN (V)

+25°C

+85°C

-40°C

2.5 2.7 2.9 3.1 3.2 3.4 3.6 3.7 3.9 4.1 4.2

1.00

1.05

1.10

1.15

1.20

1.25

1.30

1.35

1.40

1.45

1.50

VIN (V)

+25°C

+85°C

- 40°C

2.8 3.0 3.2 3.4 3.5 3.7 3.9 4.0 4.2 4.4 4.5

0.330

0.337

0.344

0.351

0.358

0.365

0.372

0.379

0.386

0.393

0.400

VIN(V)

+25°C

+85°C

-40°C

LM3642

www.ti.com

SNVS891H – SEPTEMBER 2012 – REVISED SEPTEMBER 2015

6.7 Typical Characteristics

Figure 2. Flash LED Current vs. VIN

Figure 3. Torch LED Current vs. VIN

VLED = 3.8 V, ILED = 1.5 A

VLED = 3.7 V, ILED = 375 mA

Figure 5. Flash Headroom Voltage vs. VIN

Figure 4. High Codes Flash LED Current vs. VIN

VLED = 3.8 V, ILED = 1 A

VLED = 3.8 V, Temp = 25°C

Figure 6. Torch Headroom Voltage vs. VIN

Figure 7. Output Voltage vs. VIN

VLED = 3.7 V, ILED = 375 mA

VLED = 3.8 V

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