SSL5021BTS

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Product data sheet

Rev. 2 — 11 March 2015

6 of 20

NXP Semiconductors

SSL5021BTS

Compact low-ripple buck LED driver IC

8.4 Start-up current

The supply current for the IC is supplied by resistor R3. The IC drawns an additional

the supply current in operating mode is lower than during start-up conditions, preventing

lamp flicker when the mains voltage is increased or decreased slowly. Figure 6 shows the

basic behavior.

Fig 5.

Buck waveforms and valley detection