SSL1750T datasheet(2/29 Pages) NXP

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SSL1750_1

Product data sheet

Rev. 01 — 15 September 2008

2 of 29

NXP Semiconductors

SSL1750

SMPS control IC for LED drivers

I Frequency limitation to reduce switching losses

I Burst mode operation if a low load is detected at the ﬂyback output (patented)

2.4 Flyback green features

I Valley switching for minimum switching losses (patented)

I Frequency reduction with ﬁxed minimum peak current at low power operation to

maintain high efﬁciency at low output power levels

2.5 Protection features

I Safe restart mode for system fault conditions

I Continuous mode protection by means of demagnetization detection for both

converters (patented)

I Undervoltage protection (foldback during overload)

I Accurate OverVoltage Protection (OVP) for both converters (adjustable for ﬂyback

converter)

I Open control loop protection for both converters

I IC overtemperature protection

I Low and adjustable OverCurrent Protection (OCP) trip level for both converters

I Soft-(re)start for both converters

I Soft-stop PFC to minimize audible noise

I Mains undervoltage protection / brownout protection

I General purpose input for latched protection, e.g. to be used for system

OverTemperature Protection (OTP)

Applications

The device can be used in all SSL applications that require an efﬁcient and cost-effective

LED power supply solution up to 250 W.

Key applications for the SSL1750 are:

• Indoor LED applications (> 25 W):

– Spot lights

– Down lights

– Other SSL consumer/industrial ﬁxtures

• Outdoor LED applications (> 25 W):

– Street lighting

– Area lighting (e.g. car parking)

– Tunnel lighting

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