LP5560 datasheet(13/29 Pages) TI1

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R1 ON1 F1 OFF1

Training

start

command

ON2

OFF2

Training

end

command

CTRL

ON3

OFF3

Blank

period

CTRL

Training

start

command

Training

end

command

Blank

period

LP5560

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SNVS873D – AUGUST 2012 – REVISED JUNE 2016

Product Folder Links: LP5560

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Figure 16. Entering Follow Mode With New Current Setting

7.3.3.5 Timeout

If during training CTRL stays constant for more than 127 × TCAL time this is interpreted as timeout. For example,

if calibration pulse length TCAL is 1 ms, timeout time is 127 ms. Timeout ends the training sequence. Timeout is

considered as a false training, and it is a good practice to always give a complete training sequence after timeout

to ensure correct data is stored into memory.

Figure 17. Full Training Sequence

7.3.4 LED Output Current Setting

The LED output current can be set from 2.8 mA to 19.5 mA in 7 steps. Duration of the current setting pulse (I)

defines the current setting.

Table 2. LED Current Setting

CURRENT SETTING

LED CURRENT (mA)

2.8

5.3 default

7.8

10.2

12.6

15.0

17.3

19.5

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