SSL21084T/1,118(2013) 查看數據表（PDF） - NXP Semiconductors.

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SSL21084T/1,118
(Rev.:2013)

Mains driver LED driver IC

NXP Semiconductors. 

SSL21084T

Mains driver LED driver IC

Rev. 6 — 3 October 2013

Product data sheet

1. General description

The SSL21084T is a high-voltage Integrated Circuit (IC) for driving retrofit LED lamps in

general lighting applications. It enables the implementation of a very compact low-cost

system solution. The IC incorporates an integrated internal HV switch and works as

Boundary Conduction Mode (BCM) buck converter.

The SSL21084T is supplied by a start-up bleeder resistor, a dV/dt supply using capacitive

coupling from the drain or any other auxiliary supply. The IC supply current is low. An

internal clamp limits the supply voltage.

The IC has accurate output current control and can be operated using Pulse-Width

Modulation (PWM) dimming. In addition, several protection features are available such as

easy external temperature feedback.

The main benefits of this IC include:

• Small Printed-Circuit Board (PCB) footprint and compact solution

• High efficiency (up to 90 %) for non-dimmable high power factor solutions

• High power factor (>0.9)

• Ease of integration and many protection features

• Low electronic Bill Of Material (BOM)

• Mains phase-cut dimmable using external components

• Highly flexible IC for use in buck, buck/boost modes

• Single inductor used for non-isolated configurations because of internal

demagnetization detection and dV/dt supply

The IC range is designed to start up directly from the HV supply using an internal

high-voltage current source. An internal clamp limits the supply voltage.

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