UNISONIC TECHNOLOGIES CO., LTD

USL1602

Preliminary

CMOS IC

www.unisonic.com.tw

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Copyright © 2016 Unisonic Technologies Co., Ltd

QW-R125-049.a

CONSTANT CURRENT

CONTROLLER FOR

NON-ISOLATED BUCK LED

DRIVER



DESCRIPTION

The UTC USL1602 is a high precision constant current

non-isolated buck LED driver controller. It can operate under

universal AC input, also can operate 12V~600V DC input. The UTC

USL1602

integrates 600V power MOSFET, so it can use very few

external

components

achieve

excellent

constant

current

performance.

The UTC USL1602 uses high precision current sense circuit, to

achieve high precision output current and excellent line regulation.

The UTC USL1602 operates in inductor current critical mode. The

LED current is constant over wide range of inductance variation and

the LED output voltage, so the load regulation is excellent.

The UTC USL1602 operation current is 200uA only, so the

auxiliary winding is not needed. It can simplify the system design

and reduce the system cost.

The UTC USL1602 offers rich protection functions, including

LED short circuit protection, current sense resistor short circuit

protection and over temperature protection.



FEATURES

* Inductor current critical mode, No need to compensate the

inductance variation

* 600V MOSFET integrated

* ±3% LED current accuracy

* Up to 93% system efficiency

* LED short circuit protection

* Current sense resistor short circuit protection

* Over temperature protection

DIP-8



ORDERING INFORMATION

Ordering Number

Lead Free

Halogen Free

Package

Packing

USL1602L-D08-T

USL1602G-D08-T

DIP-8

Tube

(1) T: Tube

(2) D08: DIP-8

(3) L: Lead Free, G: Halogen Free and Lead Free

USL1602L-D08-T

(1)Packing Type

(2)Package Type

(3)Green Package