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SSL5257TE

Part Number	SSL5257TE
Manufacturer	Silergy
Description	Mains dimmable buck-boost LED driver
Published	May 25, 2020
Detailed Description	SSL5257TE Mains dimmable buck-boost LED driver IC 10 Ohm/700 V Rev. 2 — 11 September 2015 Product data sheet 1. Gene...
Datasheet	SSL5257TE PDF File

Overview

SSL5257TE Mains dimmable buck-boost LED driver IC 10 Ohm/700 V Rev.
2 — 11 September 2015 Product data sheet 1.
General description The SSL5257TE is a highly integrated, high-precision buck-boost controller with an internal MOSFET.
It is intended to drive low-cost compact dimmable LED lamps up to 10 W.
The SSL5257TE is designed to achieve high power factor, phase-dimmable applications.
The SSL5257TE operates in Boundary Conduction Mode (BCM) with on-time control.
It regulates a constant output current over line and load variations.
The wide switching frequency range makes it possible to choose an inductor, which enables the optimization of inductor size, efficiency and EMI.
The SSL5257TE can start up and operate in switching mode directly from the rectified mains.
To provide a low-cost driver design, an off-the-shelf inductor can be used, which provides flexibility in application design.
Silergy Corp.
SSL5257TE Mains dimmable buck-boost LED driver IC 10 Ohm/700 V 2.
Features and benefits  Integrated MOSFET (10 /700 V)  Supports most available dimming solutions  Deep dimming level  Flicker-free dimming  Low component count ensuring a compact solution and small, single layer Printed-Circuit Board (PCB) footprint  Excellent line regulation and load regulation and good LED output current accuracy  Hotaru current control  Internal thermal foldback  Efficient BCM operation with:  Minimal recovery losses in freewheel diode  Zero Current Switching (ZCS) and Valley switching for turn-on of switch  Minimal inductance value and size required  High efficiency (up to 90 %)  Ultra low IC current during operation (< 200 A)  Auto-recovery protections:  UnderVoltage LockOut (UVLO)  Cycle-by-cycle OverCurrent Protection (OCP)  Internal OverTemperature Protection (OTP)  Output OverVoltage Protection (OVP)  Output Short Protection (OSP)  Extended IC lifetime 3.
Applications  The SSL5257TE is intended for low-cost, non-isolated dimmable lighting applicatio...

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SSL5257TE Mains dimmable buck-boost LED driver - Silergy

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