Unisonic Technologies UPSL101
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.DESCRIPTION
The UTC 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 VCC over voltage protection, LED open/short circuit protection, over temperature protection, over current protection, leading edge blanking, VCC under voltage lockout, VCC clamp, GATE clamp, etc.●
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 * VCC over voltage protection * Analog multiplier for power factor correction * Over-temperature protection * Output over voltage prot...