UNISONIC TECHNOLOGIES CO., LTD

UPSL101

Preliminary

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

1 of 8

Copyright © 2015 Unisonic Technologies Co., Ltd

QW-R125-027.b

ISOLATED, PRIMARY SIDE

CONTROL LED LIGHTING

DRIVER WITH ACTIVE PFC



DESCRIPTION

The UTC UPSL101 is a primary side control offline LED

lighting controller which can achieve high power factor and

accurate LED current for an isolate lighting application in a single

converter.

The UTC UPSL101 can control the LED current accurately

from the primary side information. It can significantly simplify the

LED lighting system design by eliminating the secondary side

feedback components and the opto-coupler. And it integrates

power factor correction function and works in transition mode for

reducing the MOSFET switching losses.

The LED current can be adjusted externally by the sense

resistor RCS at CS pin. The UTC UPSL101 achieves high

precision current along with excellent line regulation and load

regulation.

The UTC UPSL101 offers comprehensive protection coverage

LED open/short circuit protection, over temperature protection,



FEATURES

SOP-8

* Primary-side control with single stage PFC topology

* Transition mode (TM) operation to achieve high efficiency

* Minimized BOM count

* Cycle-by-cycle current limiting (OCP)

* Selectable threshold of OCP

* High current accuracy

* Analog multiplier for power factor correction

* Over-temperature protection

* Output over voltage protection

* LED open circuit protection

* LED short circuit protection

* Soft-start

* Ultra-low start-up current



ORDERING INFORMATION

Ordering Number

Package

Packing

UPSL101G-S08-R

SOP-8

Tape Reel

UPSL101G-S08-R

(1)Packing Type

(2)Package Type

(3)Green Package

(1) R: Tape Reel

(2) S08: SOP-8

(3) G: Halogen Free and Lead Free