UPSL101

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

with auto-recovery features including V CC over voltage protection,

LED open/short circuit protection, over temperature protection,

over current protection, leading edge blanking, V CC under voltage

lockout, V CC clamp, GATE clamp, etc.

FEATURES

* 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

* V CC over voltage protection

* 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

* V CC under voltage lockout (UVLO)

规格书UPSL101