The L5973AD in LED driving applications

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Doc ID 15015 Rev 1

Figure 20.

Q1 disables the switching activity by clamping the COMP signal

Figure 21.

Time delay in the LED current leading edge

The dimming performance of the circuit depends on the input voltage and number n of the

the higher the rising time of the LED current given the inductor value.

The minimum dimming duty cycle is determined based on the specification of the rising /

falling time of the LED current referred to the dimming time and on the dimming frequency.

AM01371v1