USL1601 Datasheet, PDF (1/6 Pages) Unisonic Technologies – CONSTANT CURRENT CONTROLLER

UNISONIC TECHNOLOGIES CO., LTD
USL1601
Preliminary
CONSTANT CURRENT
CONTROLLER FOR
NON-ISOLATED BUCK LED
DRIVER
CMOS IC
 DESCRIPTION
The UTC USL1601 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
USL1601 integrates 600V power MOSFET, so it can use very few
external components achieve excellent constant current
performance.
The UTC USL1601 uses high precision current sense circuit and
patent method for constant current control, to achieve high precision output current and excellent line regulation.
The UTC USL1601 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 USL1601 operation current is 200µA only, so the auxiliary winding is not needed. It can simplify the
system design and reduce the system cost.
The UTC USL1601 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
* Source driver structure, Not need the auxiliary winding for V_CC
 ORDERING INFORMATION
* LED short circuit protection
* Up to 93% system efficiency
* Current sense resistor short circuit protection
* Over temperature protection
Ordering Number
USL1601G-S08-R
Package
SOP-8
Packing
Tape Reel
 MARKING
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
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