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SIC9537D

EATURES
· Internal 500V Power MOSFET
· ±5% LED Output Current Accuracy
· No Auxiliary Power Supply Circuit
· No VCC pin,No VCC capacitor
· Critical Continuous Mode operation
· Wide Input Range

GENERAL DESCRIPTION
The SIC953XD is a very low system cost and high precision Buck constant current LED driver.It is suitable for 85Vac~265Vac universal input LED lighting.

The SIC953XD integrates high-precision sampling and compensation circuit, the constant current of circuit can achieve accuracy under ± 5%.It can achieve precise output current and excellent line regulation. The driver operates in critical conduction mode,the output current does not change with the inductance and output voltage.

The SIC953XD integrates a 500V power MOSFET. With precise and stable adaptive technique,there is no need
the auxiliary winding for VCC supply or compensation circuitry. It can achieve excellent constant current
performance with very few external components, thus it can save the system cost and size.At the same time, it can ensure the consistency of LED lamp parameters during mass production.

The SIC953XD offers rich protection features: LED short circuit protection, LED open circuit
protection,thermal regulation function ,Pin floating protection and etc.

FEATURES
· Internal 500V Power MOSFET
· ±5% LED Output Current Accuracy
· No Auxiliary Power Supply Circuit
· No VCC pin,No VCC capacitor
· Critical Continuous Mode operation
· Wide Input Range
· LED Short Protection
· LED Open Protection
· Thermal Regulation Function
· Simple system topology,few components,low cost
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