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SSL2109AT

Silergy
Part Number SSL2109AT
Manufacturer Silergy
Description Compact non-dimmable LED driver
Published May 25, 2020
Detailed Description SSL2109AT Compact non-dimmable LED driver IC Rev. 5 — 3 October 2013 Product data sheet 1. General description The SSL...
Datasheet PDF File SSL2109AT PDF File

SSL2109AT
SSL2109AT

Overview
SSL2109AT Compact non-dimmable LED driver IC Rev.
5 — 3 October 2013 Product data sheet 1.
General description The SSL2109AT is a high-voltage Integrated Circuit (IC) for driving LED lamps in general lighting applications.
The main benefits of this IC include: • Small Printed-Circuit Board (PCB) footprint and compact solution • High efficiency (up to 95 %) for non-dimmable high power factor solutions • High power factor >0.
9 (application dependent) • Ease of integration and many protection features • Low electronic Bill Of Material (BOM) • Highly flexible IC for use in buck, buck/boost and flyback modes • Single inductor used for non-isolated configurations because of internal demagnetization detection and dV/dt supply The IC is supplementary to the SSL21081/SSL21083 series but without an internal switch.
The IC has been designed to start up directly from the HV supply by an internal high-voltage current source.
Thereafter, the dV/dt supply is used with capacitive coupling from the drain, or any other auxiliary supply.
This functionality provides full flexibility in the application design.
An internal clamp limits the supply voltage.
The IC provides accurate output current control to within 5 % LED current accuracy.
The IC can be operated using Pulse-Width Modulation (PWM) current regulation and has many protection features including easy LED temperature feedback.
2.
Features and benefits  LED driver IC for driving strings of LEDs or high-voltage LED modules from a rectified mains supply  Part of a high-efficiency switch mode flyback or buck product family.
 Driver-only which can drive an external MOSFET  Driver that has power-efficient boundary conduction mode of operation with:  No reverse recovery losses in freewheel diode  Zero Current Switching (ZCS) for switch turn-on  Zero voltage or valley switching for switch turn-off  Minimal required inductance value and size  Suitable for high power factor (>0.
9) applications  Applicable in buck, buck/boost a...


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