OSRAM OPTOTRONIC Constant current LED power supplies with 3DIM - Manual (Page 19)

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3.2.2.2. Using customized sensors
Various light sensors can be used in place of the previously
mentioned OSRAM DIM MICO/PICO. Once the output
sensor is compatible with the LEDset interface, the resulting
control possibilities can perfectly fi t the needs of the appli-
cation.
In the following example, a light sensor is connected to a
microcontroller (MCU) before going to the Vset output signal,
introducing more fl exibility into the light management and,
at the same time, adding more managing possibilities (i.e.
temperature management as explained in chapter 3.3.2.5.
Application solution 5 – overtemperature management:
microcontroller (MCU) approach).
Please consider: When using a LEDset interface, the Vset
voltage range needs to be considered. Regardless of the used
sensor, the maximum Vset voltage should not exceed 11 V
(as described in chapter 2.2.1. General description) because,
otherwise, Imin or the turn-off condition (Iout = 0 mA) could
be reached.
For some ECGs, it is possible to exceed the 11 V in a specifi c
operation mode, while keeping the nominal output current
(Inom
max
) at its maximum value. This behavior is described in
the next chapter (3.2.2.3.).
LEDset APPLICATIONS
Figure 10: Local dimming – light sensor – custom application.