ST STEVAL-ILL009V1, Примечание к применению

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AN2531 How to set high current for LEDs
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3 How to set high current for LEDs
The STP04CM596 is focused on driving high brightness and power LEDs and its output
constant current can be set between 80 and 500 mA. In case a LED with even higher
current is used, there is still a solution to control such LED using the STP04CM596. Thanks
to a common drain configuration, the outputs can be connected together as shown in
Figure 5 . This increases the performance and current capability of this driver. This
configuration allows driving the whole range of HB LEDs available on the market. For
example, this principle is also used in the STEVAL-ILL009V1 presented in this application
note, because the board has maximum current capability of 700 mA (2 channels x 350 mA).
Figure 5. Common drain configuration
AM00288
STP04CM596
Rext
I-REG
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Vf
+ Vc