UNISONIC TECHNOLOGIES CO., LTD

USL3533

Preliminary

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2015 Unisonic Technologies Co., Ltd

QW-R103-100.a

NON-ISOLATED BUCK

OFFLINE LED DRIVER

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DESCRIPTION

The UTC USL3533 is a high performance, high precision and

low cost constant current LED driver for non-isolated buck

is suitable for 85V~265V universal input offline LED lighting. It

change with the inductance and LED output voltage.

The UTC USL3533 integrates a 500V power MOSFET. It can

achieve excellent constant current performance with very few

external components, so the system cost and size are minimized.

The UTC USL3533 offers rich protection functions to improve

the system reliability, including LED open circuit protection, LED

short circuit protection and thermal regulation function.



FEATURES

* Internal 500V Power MOSFET

* Ultra low operating current

* No auxiliary winding

* ±5% LED output current accuracy

* LED short protection

* LED open protection

* Current sensing resistor short protection

* Thermal regulation function

SOP-8

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ORDERING INFORMATION

Ordering Number

Package

Packing

USL3533G-S08-R

SOP-8

Tape Reel

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MARKING