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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 ?yback output (patented)
2.4 Flyback green features
I Valley switching for minimum switching losses (patented)
I Frequency reduction with ?xed minimum peak current at low power operation to
maintain high ef?ciency 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 ?yback
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)
3. Applications
The device can be used in all SSL applications that require an ef?cient 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 ?xtures
? Outdoor LED applications (> 25 W):
– Street lighting
– Area lighting (e.g. car parking)
– Tunnel lighting
SSL1750_1
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 15 September 2008
2 of 29
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