Datasheet

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Sliders

4.2 Indicator Slider

This slider bar selects the Indicator Current Level and writes the corresponding Indicator Current setting

shown in Table 2 to the Indicator Current Select Bits (bits [7:6] of the Torch Brightness Register). The field

to the right of the Indicator Slider is updated with the Hexadecimal equivalent of the Indicator Current

Select Bits.

Table 2. Indicator LED Current Levels

Indicator Current Setting I

LEDI

(mA)

0 2.5

1 5 (Default)

2 7.5

3 10

4.3 Flash Slider

This slider bar selects the Flash Current Level and writes the corresponding Flash Current shown in

Table 3 to the Flash Current Select Bits (bits [6:3] of the Flash Brightness Register). The field to the right

of the Flash slider is updated with the Hexadecimal equivalent of the Flash Current Select Bits.

Table 3. Flash Current Level

Flash Current Setting I

LED1

or I

LED2

(mA) I

LED1

+ I

LED2

(mA)

0 37.5 75

1 75 150

2 112.5 225

3 150 300

4 187.5 375

5 225 450

6 262.5 525

7 300 600

8 337.5 675

9 375 750

A 412.5 825

B 450 900

C 487.5 975

D 525 (Default) 1050 (Default)

E 562.5 1125

F 600 1200

SNVA646B–January 2009–Revised July 2013 AN-1742 LM3554 Evaluation Board

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