LM3642TLE datasheet(8/30 Pages) TI1

Part #	LM3642TLE

Description	Synchronous Boost LED Flash Driver

Download	30 Pages

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Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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2.8 3.0 3.1 3.3 3.4 3.5 3.7 3.8 4.0 4.1 4.2

1.50

1.55

1.60

1.65

1.70

1.75

1.80

1.85

1.90

1.95

2.00

VIN (V)

+25°C

+85°C

-40°C

2.7 2.9 3.1 3.3 3.5 3.6 3.8 4.0 4.2 4.4 4.5

4.00

4.01

4.02

4.03

4.04

4.05

4.06

4.07

4.08

4.09

4.10

VIN (V)

+25°C

+85°C

- 40°C

2.6 2.8 3.0 3.1 3.3 3.4 3.6 3.8 3.9 4.1 4.2

1.75

1.80

1.85

1.90

1.95

2.00

2.05

2.10

2.15

2.20

2.25

VIN (V)

+25°C

+85°C

- 40°C

2.6 2.8 3.0 3.1 3.3 3.4 3.6 3.8 3.9 4.1 4.2

1.68

1.70

1.71

1.72

1.73

1.74

1.76

1.77

1.78

1.79

1.80

VIN (V)

+25°C

+85°C

- 40°C

LM3642

SNVS891H – SEPTEMBER 2012 – REVISED SEPTEMBER 2015

www.ti.com

Typical Characteristics (continued)

Figure 8. Peak Input Current Limit vs. VIN

Figure 9. Peak Input Current Limit vs. VIN

VLED = 3.8V, IIN Setting = 1.9 A

VLED = 3.8 V, IIN Setting = 1.7 A

Figure 10. Average Input Current Limit vs. VIN

Figure 11. Switching Frequency vs. VIN

VLED = 3.8 V, IIN Setting = 1.9 A

VLED = 3.8 V

8

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